diff --git a/apps/x/apps/main/src/ipc.ts b/apps/x/apps/main/src/ipc.ts
index ec2803aa..1675b78b 100644
--- a/apps/x/apps/main/src/ipc.ts
+++ b/apps/x/apps/main/src/ipc.ts
@@ -16,11 +16,12 @@ import { bus } from '@x/core/dist/runs/bus.js';
 import { serviceBus } from '@x/core/dist/services/service_bus.js';
 import type { FSWatcher } from 'chokidar';
 import fs from 'node:fs/promises';
-import { exec } from 'node:child_process';
+import { exec, execFile } from 'node:child_process';
 import { promisify } from 'node:util';
 import z from 'zod';
 
 const execAsync = promisify(exec);
+const execFileAsync = promisify(execFile);
 import { RunEvent } from '@x/shared/dist/runs.js';
 import { ServiceEvent } from '@x/shared/dist/service-events.js';
 import container from '@x/core/dist/di/container.js';
@@ -36,6 +37,9 @@ import { checkCodeModeAgentStatus } from '@x/core/dist/code-mode/status.js';
 import { invalidateCopilotInstructionsCache } from '@x/core/dist/application/assistant/instructions.js';
 import { triggerSync as triggerGranolaSync } from '@x/core/dist/knowledge/granola/sync.js';
 import { ISlackConfigRepo } from '@x/core/dist/slack/repo.js';
+import { knowledgeSourcesRepo } from '@x/core/dist/knowledge/sources/repo.js';
+import { rankSlackHomeMessages } from '@x/core/dist/knowledge/sources/rank_slack_home.js';
+import { syncSlackKnowledgeSources, triggerSync as triggerSlackKnowledgeSync } from '@x/core/dist/knowledge/sources/sync_slack.js';
 import { isOnboardingComplete, markOnboardingComplete } from '@x/core/dist/config/note_creation_config.js';
 import * as composioHandler from './composio-handler.js';
 import { consumePendingDeepLink } from './deeplink.js';
@@ -72,6 +76,145 @@ import {
   listTasks,
   readRunIds as readTaskRunIds,
 } from '@x/core/dist/background-tasks/fileops.js';
+
+type SlackHomeChannel = {
+  id: string;
+  name: string;
+  workspaceUrl?: string;
+  workspaceName?: string;
+};
+
+type SlackHomeMessage = {
+  id: string;
+  workspaceName?: string;
+  workspaceUrl?: string;
+  channelId?: string;
+  channelName?: string;
+  author?: string;
+  text: string;
+  ts: string;
+  url?: string;
+};
+
+function parseJsonArrayPayload(stdout: string): unknown[] {
+  const parsed = JSON.parse(stdout || '[]');
+  if (Array.isArray(parsed)) return parsed;
+  if (parsed && typeof parsed === 'object') {
+    const obj = parsed as Record<string, unknown>;
+    for (const key of ['messages', 'channels', 'items', 'results', 'data']) {
+      if (Array.isArray(obj[key])) return obj[key] as unknown[];
+    }
+  }
+  return [];
+}
+
+function slackMessageText(message: Record<string, unknown>): string {
+  const value = message.text ?? message.body ?? message.content;
+  return typeof value === 'string' ? value.trim() : '';
+}
+
+function slackMessageAuthor(message: Record<string, unknown>): string | undefined {
+  const value = message.username ?? message.user ?? message.author;
+  return typeof value === 'string' ? value : undefined;
+}
+
+function extractSlackUserName(raw: unknown): string | null {
+  if (!raw || typeof raw !== 'object') return null;
+  const obj = raw as Record<string, unknown>;
+  const profile = obj.profile && typeof obj.profile === 'object' ? obj.profile as Record<string, unknown> : undefined;
+  const user = obj.user && typeof obj.user === 'object' ? obj.user as Record<string, unknown> : undefined;
+  const userProfile = user?.profile && typeof user.profile === 'object' ? user.profile as Record<string, unknown> : undefined;
+
+  const candidates = [
+    profile?.display_name,
+    profile?.real_name,
+    userProfile?.display_name,
+    userProfile?.real_name,
+    obj.display_name,
+    obj.displayName,
+    obj.real_name,
+    obj.realName,
+    user?.display_name,
+    user?.displayName,
+    user?.real_name,
+    user?.realName,
+    obj.name,
+    user?.name,
+  ];
+
+  for (const candidate of candidates) {
+    if (typeof candidate === 'string' && candidate.trim()) {
+      return candidate.trim();
+    }
+  }
+
+  return null;
+}
+
+async function resolveSlackUserName(
+  userId: string,
+  workspaceUrl: string | undefined,
+  cache: Map<string, string>,
+): Promise<string | null> {
+  const key = `${workspaceUrl ?? ''}:${userId}`;
+  if (cache.has(key)) return cache.get(key) ?? null;
+
+  const args = ['user', 'get', userId];
+  if (workspaceUrl) {
+    args.push('--workspace', workspaceUrl);
+  }
+
+  try {
+    const { stdout } = await execFileAsync('agent-slack', args, { timeout: 10000, maxBuffer: 512 * 1024 });
+    const parsed = JSON.parse(stdout || '{}');
+    const name = extractSlackUserName(parsed);
+    if (name) {
+      cache.set(key, name);
+      return name;
+    }
+  } catch (error) {
+    console.warn(`[Slack] Failed to resolve user ${userId}:`, error);
+  }
+
+  cache.set(key, userId);
+  return null;
+}
+
+async function resolveSlackMessageText(
+  text: string,
+  workspaceUrl: string | undefined,
+  cache: Map<string, string>,
+): Promise<string> {
+  const matches = Array.from(text.matchAll(/<@([UW][A-Z0-9]+)(?:\|([^>]+))?>|@([UW][A-Z0-9]{6,})\b/g));
+  if (matches.length === 0) return text;
+
+  let resolved = text;
+  for (const match of matches) {
+    const userId = match[1] ?? match[3];
+    if (!userId) continue;
+    const fallback = match[2] ?? match[0];
+    const name = await resolveSlackUserName(userId, workspaceUrl, cache);
+    resolved = resolved.replaceAll(match[0], name ?? fallback);
+  }
+  return resolved;
+}
+
+async function resolveSlackAuthor(
+  author: string | undefined,
+  workspaceUrl: string | undefined,
+  cache: Map<string, string>,
+): Promise<string | undefined> {
+  if (!author) return undefined;
+  if (!/^[UW][A-Z0-9]{6,}$/.test(author)) return author;
+  return await resolveSlackUserName(author, workspaceUrl, cache) ?? author;
+}
+
+function slackMessageUrl(message: Record<string, unknown>, workspaceUrl: string | undefined, channelId: string | undefined, ts: string): string | undefined {
+  const direct = message.permalink ?? message.url;
+  if (typeof direct === 'string' && direct) return direct;
+  if (!workspaceUrl || !channelId) return undefined;
+  return `${workspaceUrl.replace(/\/$/, '')}/archives/${channelId}/p${ts.replace('.', '')}`;
+}
 import { browserIpcHandlers } from './browser/ipc.js';
 
 /**
@@ -683,6 +826,133 @@ export function setupIpcHandlers() {
         return { workspaces: [], error: message };
       }
     },
+    'slack:listChannels': async (_event, args) => {
+      try {
+        const { stdout } = await execFileAsync('agent-slack', ['channel', 'list', '--all', '--workspace', args.workspaceUrl, '--limit', '200'], { timeout: 15000 });
+        const parsed = JSON.parse(stdout);
+        const rawChannels = Array.isArray(parsed) ? parsed : (parsed.channels || parsed.items || parsed.results || []);
+        const channels = rawChannels.map((ch: {
+          id?: string;
+          name?: string;
+          is_private?: boolean;
+          isPrivate?: boolean;
+          is_member?: boolean;
+          isMember?: boolean;
+        }) => ({
+          id: ch.id || ch.name || '',
+          name: ch.name || ch.id || '',
+          isPrivate: ch.is_private ?? ch.isPrivate,
+          isMember: ch.is_member ?? ch.isMember,
+        })).filter((ch: { id: string; name: string }) => ch.id && ch.name);
+        return { channels };
+      } catch (err: unknown) {
+        const message = err instanceof Error ? err.message : 'Failed to list Slack channels';
+        return { channels: [], error: message };
+      }
+    },
+    'slack:getRecentMessages': async (_event, args) => {
+      const repo = container.resolve<ISlackConfigRepo>('slackConfigRepo');
+      const config = await repo.getConfig();
+      if (!config.enabled || config.workspaces.length === 0) {
+        return { enabled: false, messages: [] };
+      }
+
+      const limit = Math.min(Math.max(args.limit ?? 5, 1), 20);
+      const messages: SlackHomeMessage[] = [];
+      const userNameCache = new Map<string, string>();
+
+      try {
+        const knowledgeConfig = knowledgeSourcesRepo.getConfig();
+        const slackSource = knowledgeConfig.sources.find(source => source.id === 'slack' && source.provider === 'slack' && source.enabled);
+        let channels: SlackHomeChannel[] = (slackSource?.scopes ?? [])
+          .filter(scope => scope.type === 'channel')
+          .map(scope => ({
+            id: scope.id,
+            name: scope.name ?? scope.id,
+            workspaceUrl: scope.workspaceUrl,
+            workspaceName: config.workspaces.find(workspace => workspace.url === scope.workspaceUrl)?.name,
+          }));
+
+        if (channels.length === 0) {
+          for (const workspace of config.workspaces) {
+            const { stdout } = await execFileAsync('agent-slack', ['channel', 'list', '--workspace', workspace.url, '--limit', '12'], { timeout: 15000 });
+            const rawChannels = parseJsonArrayPayload(stdout);
+            for (const raw of rawChannels) {
+              if (!raw || typeof raw !== 'object') continue;
+              const channel = raw as Record<string, unknown>;
+              const id = typeof channel.id === 'string' ? channel.id : undefined;
+              const name = typeof channel.name === 'string' ? channel.name : id;
+              const isMember = channel.is_member ?? channel.isMember;
+              if (!id || !name || isMember === false) continue;
+              channels.push({ id, name, workspaceUrl: workspace.url, workspaceName: workspace.name });
+            }
+          }
+        }
+
+        channels = channels.slice(0, 8);
+
+        for (const channel of channels) {
+          const commandArgs = ['message', 'list', channel.id, '--limit', '5', '--max-body-chars', '500'];
+          if (channel.workspaceUrl) {
+            commandArgs.push('--workspace', channel.workspaceUrl);
+          }
+          try {
+            const { stdout } = await execFileAsync('agent-slack', commandArgs, { timeout: 15000, maxBuffer: 1024 * 1024 });
+            const rawMessages = parseJsonArrayPayload(stdout);
+            for (const raw of rawMessages) {
+              if (!raw || typeof raw !== 'object') continue;
+              const message = raw as Record<string, unknown>;
+              const ts = typeof message.ts === 'string' ? message.ts : undefined;
+              const text = slackMessageText(message);
+              if (!ts || !text) continue;
+              const channelId = typeof message.channel_id === 'string'
+                ? message.channel_id
+                : typeof message.channel === 'string'
+                  ? message.channel
+                  : channel.id;
+              const resolvedAuthor = await resolveSlackAuthor(slackMessageAuthor(message), channel.workspaceUrl, userNameCache);
+              const resolvedText = await resolveSlackMessageText(text, channel.workspaceUrl, userNameCache);
+              messages.push({
+                id: `${channel.workspaceUrl ?? 'workspace'}:${channelId}:${ts}`,
+                workspaceName: channel.workspaceName,
+                workspaceUrl: channel.workspaceUrl,
+                channelId,
+                channelName: channel.name,
+                author: resolvedAuthor,
+                text: resolvedText,
+                ts,
+                url: slackMessageUrl(message, channel.workspaceUrl, channelId, ts),
+              });
+            }
+          } catch (error) {
+            console.warn(`[Slack] Failed to load messages for ${channel.name}:`, error);
+          }
+        }
+
+        const rankedIds = await rankSlackHomeMessages(messages, limit);
+        const byId = new Map(messages.map(message => [message.id, message]));
+        const rankedMessages = rankedIds
+          .map(id => byId.get(id))
+          .filter((message): message is SlackHomeMessage => Boolean(message));
+        return { enabled: true, messages: rankedMessages };
+      } catch (err: unknown) {
+        const message = err instanceof Error ? err.message : 'Failed to load Slack messages';
+        return { enabled: true, messages: [], error: message };
+      }
+    },
+    'knowledgeSources:getConfig': async () => {
+      return knowledgeSourcesRepo.getConfig();
+    },
+    'knowledgeSources:upsert': async (_event, args) => {
+      const config = knowledgeSourcesRepo.upsertSource(args);
+      if (args.provider === 'slack') {
+        triggerSlackKnowledgeSync();
+        void syncSlackKnowledgeSources().catch(error => {
+          console.error('[SlackKnowledge] Immediate sync after settings update failed:', error);
+        });
+      }
+      return config;
+    },
     'onboarding:getStatus': async () => {
       // Show onboarding if it hasn't been completed yet
       const complete = isOnboardingComplete();
diff --git a/apps/x/apps/renderer/src/components/home-view.tsx b/apps/x/apps/renderer/src/components/home-view.tsx
index bfcc0a33..825aa5ee 100644
--- a/apps/x/apps/renderer/src/components/home-view.tsx
+++ b/apps/x/apps/renderer/src/components/home-view.tsx
@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useMemo, useState } from 'react'
-import { ArrowRight, Bot, Calendar, Clock, FileText, Mail, MessageSquare, Mic, Plug, Plus, Video } from 'lucide-react'
+import { ArrowRight, Bot, Calendar, Clock, ExternalLink, FileText, Mail, MessageSquare, Mic, Plug, Plus, Video } from 'lucide-react'
 import { extractConferenceLink } from '@/lib/calendar-event'
 import { SettingsDialog } from '@/components/settings-dialog'
 
@@ -54,6 +54,17 @@ type RawCalEvent = {
 }
 
 type EmailThread = { threadId: string; subject: string; from: string }
+type SlackFeedMessage = {
+  id: string
+  workspaceName?: string
+  workspaceUrl?: string
+  channelId?: string
+  channelName?: string
+  author?: string
+  text: string
+  ts: string
+  url?: string
+}
 type ToolkitPreview = { slug: string; logo: string; name: string; description: string }
 
 function greeting(): string {
@@ -94,6 +105,13 @@ function relativeAgo(iso?: string): string {
   return `${d}d ago`
 }
 
+function relativeSlackTs(ts: string): string {
+  const seconds = Number(ts.split('.')[0])
+  if (!Number.isFinite(seconds)) return ''
+  const iso = new Date(seconds * 1000).toISOString()
+  return relativeAgo(iso)
+}
+
 function parseAllDay(s: string): Date | null {
   const m = /^(\d{4})-(\d{2})-(\d{2})/.exec(s)
   if (!m) return null
@@ -218,6 +236,9 @@ export function HomeView({
 }: HomeViewProps) {
   const [events, setEvents] = useState<CalEvent[]>([])
   const [emails, setEmails] = useState<EmailThread[]>([])
+  const [slackEnabled, setSlackEnabled] = useState(false)
+  const [slackMessages, setSlackMessages] = useState<SlackFeedMessage[]>([])
+  const [slackError, setSlackError] = useState<string | null>(null)
   const [toolkitPreviews, setToolkitPreviews] = useState<ToolkitPreview[]>(cachedToolkitPreviews ?? [])
   const [toolkitLogosLoaded, setToolkitLogosLoaded] = useState(cachedToolkitLogosLoaded)
   const [connectionsSettingsOpen, setConnectionsSettingsOpen] = useState(false)
@@ -260,6 +281,20 @@ export function HomeView({
     }
   }, [])
 
+  const loadSlackMessages = useCallback(async () => {
+    try {
+      const result = await window.ipc.invoke('slack:getRecentMessages', { limit: 5 })
+      setSlackEnabled(result.enabled)
+      setSlackMessages(result.messages)
+      setSlackError(result.error ?? null)
+    } catch (err) {
+      console.error('Home: failed to load Slack messages', err)
+      setSlackEnabled(false)
+      setSlackMessages([])
+      setSlackError(null)
+    }
+  }, [])
+
   const loadConnectorLogos = useCallback(async () => {
     if (cachedToolkitLogosLoaded) return
     try {
@@ -293,7 +328,7 @@ export function HomeView({
     })
   }, [])
 
-  useEffect(() => { void loadEvents(); void loadEmails(); void loadConnectorLogos() }, [loadEvents, loadEmails, loadConnectorLogos])
+  useEffect(() => { void loadEvents(); void loadEmails(); void loadSlackMessages(); void loadConnectorLogos() }, [loadEvents, loadEmails, loadSlackMessages, loadConnectorLogos])
 
   // Upcoming (not-yet-ended) events, soonest first.
   const upcoming = useMemo(() => {
@@ -460,6 +495,53 @@ export function HomeView({
             </div>
           </div>
 
+          {/* Slack */}
+          {slackEnabled && (
+            <div className={CARD}>
+              <div className="mb-3 flex items-center gap-2">
+                <MessageSquare className="size-[15px]" />
+                <span className="text-sm font-medium">Slack</span>
+                <span className="flex-1" />
+                <span className="text-xs text-muted-foreground">Latest messages</span>
+              </div>
+              {slackError ? (
+                <div className="py-1 text-[12.5px] text-muted-foreground">{slackError}</div>
+              ) : slackMessages.length === 0 ? (
+                <div className="py-1 text-[12.5px] text-muted-foreground">No recent Slack messages found.</div>
+              ) : slackMessages.map((message, i) => (
+                <div
+                  key={message.id}
+                  className={`flex items-start gap-3 py-2 text-[12.5px] ${i ? 'border-t border-border' : ''}`}
+                >
+                  <div className="min-w-0 flex-1">
+                    <div className="mb-0.5 flex min-w-0 items-center gap-1.5 text-[11.5px] text-muted-foreground">
+                      <span className="truncate">{message.channelName ?? 'Slack'}</span>
+                      {message.author && (
+                        <>
+                          <span className="shrink-0">·</span>
+                          <span className="truncate">{message.author}</span>
+                        </>
+                      )}
+                      <span className="shrink-0">·</span>
+                      <span className="shrink-0">{relativeSlackTs(message.ts)}</span>
+                    </div>
+                    <div className="line-clamp-2 text-foreground">{message.text}</div>
+                  </div>
+                  {message.url && (
+                    <button
+                      type="button"
+                      onClick={() => window.open(message.url, '_blank')}
+                      className="inline-flex shrink-0 items-center gap-1 rounded-md border border-border px-2 py-1 text-[11.5px] text-primary transition-colors hover:bg-accent"
+                    >
+                      Open
+                      <ExternalLink className="size-3" />
+                    </button>
+                  )}
+                </div>
+              ))}
+            </div>
+          )}
+
           {/* Today's schedule */}
           <div className={CARD}>
             <div className="mb-3.5 flex items-center gap-2">
diff --git a/apps/x/apps/renderer/src/components/settings/connected-accounts-settings.tsx b/apps/x/apps/renderer/src/components/settings/connected-accounts-settings.tsx
index e0c0b900..b09d1630 100644
--- a/apps/x/apps/renderer/src/components/settings/connected-accounts-settings.tsx
+++ b/apps/x/apps/renderer/src/components/settings/connected-accounts-settings.tsx
@@ -1,9 +1,11 @@
 "use client"
 
 import * as React from "react"
-import { Loader2, Mic, Mail, Calendar } from "lucide-react"
+import { Loader2, Mic, Mail, Calendar, MessageSquare } from "lucide-react"
 import { Button } from "@/components/ui/button"
 import { Separator } from "@/components/ui/separator"
+import { Switch } from "@/components/ui/switch"
+import { Textarea } from "@/components/ui/textarea"
 import { GoogleClientIdModal } from "@/components/google-client-id-modal"
 import { ComposioApiKeyModal } from "@/components/composio-api-key-modal"
 import { useConnectors } from "@/hooks/useConnectors"
@@ -237,6 +239,150 @@ export function ConnectedAccountsSettings({ dialogOpen }: ConnectedAccountsSetti
             {renderOAuthProvider('fireflies-ai', 'Fireflies', <Mic className="size-4" />, 'AI meeting transcripts')}
           </>
         )}
+
+        {/* Team Communication Section */}
+        <>
+          <Separator className="my-2" />
+          <div className="px-3 pt-1 pb-0.5">
+            <span className="text-xs font-medium text-muted-foreground uppercase tracking-wider">
+              Team Communication
+            </span>
+          </div>
+          <div className="rounded-md px-3 py-2 hover:bg-accent/50 transition-colors">
+            <div className="flex items-center justify-between gap-2">
+              <div className="flex items-center gap-2.5 min-w-0">
+                <div className="flex size-8 items-center justify-center rounded-md bg-muted">
+                  <MessageSquare className="size-4" />
+                </div>
+                <div className="flex flex-col min-w-0">
+                  <span className="text-sm font-medium truncate">Slack</span>
+                  {c.slackLoading ? (
+                    <span className="text-xs text-muted-foreground">Checking...</span>
+                  ) : c.slackEnabled && c.slackWorkspaces.length > 0 ? (
+                    <span className="text-xs text-emerald-600 truncate">
+                      {c.slackWorkspaces.map(workspace => workspace.name).join(', ')}
+                    </span>
+                  ) : (
+                    <span className="text-xs text-muted-foreground truncate">Send messages and view channels</span>
+                  )}
+                </div>
+              </div>
+              <div className="shrink-0">
+                {c.slackLoading || c.slackDiscovering ? (
+                  <Loader2 className="size-4 animate-spin text-muted-foreground" />
+                ) : c.slackEnabled ? (
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    onClick={c.handleSlackDisable}
+                    className="h-7 px-3 text-xs"
+                  >
+                    Disable
+                  </Button>
+                ) : (
+                  <Button
+                    variant="default"
+                    size="sm"
+                    onClick={c.handleSlackEnable}
+                    className="h-7 px-3 text-xs"
+                  >
+                    Enable
+                  </Button>
+                )}
+              </div>
+            </div>
+            {c.slackPickerOpen && (
+              <div className="mt-2 ml-10 space-y-2">
+                {c.slackDiscoverError ? (
+                  <p className="text-xs text-muted-foreground">{c.slackDiscoverError}</p>
+                ) : (
+                  <>
+                    {c.slackAvailableWorkspaces.map(workspace => (
+                      <label key={workspace.url} className="flex items-center gap-2 text-sm cursor-pointer">
+                        <input
+                          type="checkbox"
+                          checked={c.slackSelectedUrls.has(workspace.url)}
+                          onChange={(event) => {
+                            c.setSlackSelectedUrls(prev => {
+                              const next = new Set(prev)
+                              if (event.target.checked) next.add(workspace.url)
+                              else next.delete(workspace.url)
+                              return next
+                            })
+                          }}
+                          className="rounded border-border"
+                        />
+                        <span className="truncate">{workspace.name}</span>
+                      </label>
+                    ))}
+                    <Button
+                      size="sm"
+                      onClick={c.handleSlackSaveWorkspaces}
+                      disabled={c.slackSelectedUrls.size === 0 || c.slackLoading}
+                      className="h-7 px-3 text-xs"
+                    >
+                      Save
+                    </Button>
+                  </>
+                )}
+              </div>
+            )}
+          </div>
+        </>
+
+        {/* Knowledge Sources Section */}
+        {c.slackEnabled && (
+          <>
+            <Separator className="my-2" />
+            <div className="px-3 pt-1 pb-0.5">
+              <span className="text-xs font-medium text-muted-foreground uppercase tracking-wider">
+                Knowledge Sources
+              </span>
+            </div>
+            <div className="rounded-md px-3 py-2 hover:bg-accent/50 transition-colors">
+              <div className="flex items-center justify-between gap-2">
+                <div className="flex items-center gap-2.5 min-w-0">
+                  <div className="flex size-8 items-center justify-center rounded-md bg-muted">
+                    <MessageSquare className="size-4" />
+                  </div>
+                  <div className="flex flex-col min-w-0">
+                    <span className="text-sm font-medium truncate">Slack to knowledge</span>
+                    <span className="text-xs text-muted-foreground truncate">
+                      Sync selected channels into the knowledge graph
+                    </span>
+                  </div>
+                </div>
+                <Switch
+                  checked={c.slackKnowledgeEnabled}
+                  onCheckedChange={c.setSlackKnowledgeEnabled}
+                  disabled={c.slackKnowledgeSaving}
+                />
+              </div>
+              <div className="mt-2 space-y-2">
+                <Textarea
+                  value={c.slackKnowledgeChannels}
+                  onChange={(event) => c.setSlackKnowledgeChannels(event.target.value)}
+                  placeholder={c.slackWorkspaces.length > 1 ? "https://team.slack.com #engineering" : "#engineering"}
+                  className="min-h-20 text-xs"
+                  disabled={!c.slackKnowledgeEnabled || c.slackKnowledgeSaving}
+                />
+                <div className="flex items-center justify-between gap-2">
+                  <span className="text-xs text-muted-foreground">
+                    One channel per line. Use channel names or IDs.
+                  </span>
+                  <Button
+                    size="sm"
+                    onClick={c.handleSlackKnowledgeSave}
+                    disabled={c.slackKnowledgeSaving || (c.slackKnowledgeEnabled && c.slackKnowledgeChannels.trim().length === 0)}
+                    className="h-7 px-3 text-xs"
+                  >
+                    {c.slackKnowledgeSaving ? <Loader2 className="size-3 animate-spin" /> : "Save"}
+                  </Button>
+                </div>
+              </div>
+            </div>
+          </>
+        )}
       </div>
     </>
   )
diff --git a/apps/x/apps/renderer/src/hooks/useConnectors.ts b/apps/x/apps/renderer/src/hooks/useConnectors.ts
index 0cb65af5..94717ef1 100644
--- a/apps/x/apps/renderer/src/hooks/useConnectors.ts
+++ b/apps/x/apps/renderer/src/hooks/useConnectors.ts
@@ -12,6 +12,18 @@ export interface ProviderStatus {
   error?: string
 }
 
+type KnowledgeSourceConfig = {
+  id: string
+  provider: 'gmail' | 'meeting' | 'voice_memo' | 'slack' | 'github' | 'linear'
+  enabled: boolean
+  artifactDir: string
+  syncMode: 'file' | 'poll' | 'event' | 'manual'
+  intervalMs?: number
+  scopes: Array<{ type: string; id: string; name?: string; workspaceUrl?: string }>
+  instructions?: string
+  filters?: Record<string, unknown>
+}
+
 export function useConnectors(active: boolean) {
   const [providers, setProviders] = useState<string[]>([])
   const [providersLoading, setProvidersLoading] = useState(true)
@@ -37,6 +49,9 @@ export function useConnectors(active: boolean) {
   const [slackPickerOpen, setSlackPickerOpen] = useState(false)
   const [slackDiscovering, setSlackDiscovering] = useState(false)
   const [slackDiscoverError, setSlackDiscoverError] = useState<string | null>(null)
+  const [slackKnowledgeEnabled, setSlackKnowledgeEnabled] = useState(false)
+  const [slackKnowledgeChannels, setSlackKnowledgeChannels] = useState("")
+  const [slackKnowledgeSaving, setSlackKnowledgeSaving] = useState(false)
 
   // Composio Gmail/Calendar sync was removed. These flags are seeded false
   // and never flipped — the IPC that used to set them is gone. The setters
@@ -165,6 +180,17 @@ export function useConnectors(active: boolean) {
       setSlackEnabled(false)
       setSlackWorkspaces([])
       setSlackPickerOpen(false)
+      await window.ipc.invoke('knowledgeSources:upsert', {
+        id: 'slack',
+        provider: 'slack',
+        enabled: false,
+        artifactDir: 'knowledge_sources/slack',
+        syncMode: 'poll',
+        intervalMs: 5 * 60 * 1000,
+        scopes: [],
+      })
+      setSlackKnowledgeEnabled(false)
+      setSlackKnowledgeChannels("")
       toast.success('Slack disabled')
     } catch (error) {
       console.error('Failed to update Slack config:', error)
@@ -174,6 +200,77 @@ export function useConnectors(active: boolean) {
     }
   }, [])
 
+  const refreshKnowledgeSources = useCallback(async () => {
+    try {
+      const result = await window.ipc.invoke('knowledgeSources:getConfig', null)
+      const slackSource = (result.sources as KnowledgeSourceConfig[]).find(source => source.id === 'slack')
+      setSlackKnowledgeEnabled(Boolean(slackSource?.enabled))
+      setSlackKnowledgeChannels((slackSource?.scopes ?? [])
+        .filter(scope => scope.type === 'channel')
+        .map(scope => {
+          const channel = scope.name || scope.id
+          return scope.workspaceUrl ? `${scope.workspaceUrl} ${channel}` : channel
+        })
+        .join('\n'))
+    } catch (error) {
+      console.error('Failed to load knowledge sources:', error)
+      setSlackKnowledgeEnabled(false)
+      setSlackKnowledgeChannels("")
+    }
+  }, [])
+
+  const parseSlackKnowledgeScopes = useCallback(() => {
+    const defaultWorkspaceUrl = slackWorkspaces.length === 1 ? slackWorkspaces[0]?.url : undefined
+    return slackKnowledgeChannels
+      .split(/\n+/)
+      .map(line => line.trim())
+      .filter(Boolean)
+      .map(line => {
+        const parts = line.split(/\s+/)
+        const first = parts[0] ?? ''
+        const hasWorkspace = /^https?:\/\//.test(first)
+        const workspaceUrl = hasWorkspace ? first : defaultWorkspaceUrl
+        const channelRaw = hasWorkspace ? parts.slice(1).join(' ') : line
+        const channel = channelRaw.trim()
+        return {
+          type: 'channel',
+          id: channel.replace(/^#/, ''),
+          name: channel.startsWith('#') ? channel : `#${channel}`,
+          workspaceUrl,
+        }
+      })
+      .filter(scope => scope.id.length > 0)
+  }, [slackKnowledgeChannels, slackWorkspaces])
+
+  const handleSlackKnowledgeSave = useCallback(async () => {
+    try {
+      setSlackKnowledgeSaving(true)
+      const scopes = parseSlackKnowledgeScopes()
+      await window.ipc.invoke('knowledgeSources:upsert', {
+        id: 'slack',
+        provider: 'slack',
+        enabled: slackKnowledgeEnabled && scopes.length > 0,
+        artifactDir: 'knowledge_sources/slack',
+        syncMode: 'poll',
+        intervalMs: 5 * 60 * 1000,
+        scopes,
+        instructions: 'Use Slack messages to update durable knowledge about projects, people, decisions, blockers, owners, deadlines, and status changes.',
+        filters: {
+          limit: 100,
+          maxBodyChars: 4000,
+          recentBackfillSeconds: 6 * 60 * 60,
+        },
+      })
+      toast.success('Slack knowledge source saved')
+      await refreshKnowledgeSources()
+    } catch (error) {
+      console.error('Failed to save Slack knowledge source:', error)
+      toast.error('Failed to save Slack knowledge source')
+    } finally {
+      setSlackKnowledgeSaving(false)
+    }
+  }, [parseSlackKnowledgeScopes, refreshKnowledgeSources, slackKnowledgeEnabled])
+
   // Gmail (Composio)
   const refreshGmailStatus = useCallback(async () => {
     try {
@@ -417,6 +514,7 @@ export function useConnectors(active: boolean) {
   const refreshAllStatuses = useCallback(async () => {
     refreshGranolaConfig()
     refreshSlackConfig()
+    refreshKnowledgeSources()
 
     if (useComposioForGoogle) {
       refreshGmailStatus()
@@ -461,7 +559,7 @@ export function useConnectors(active: boolean) {
     }
 
     setProviderStates(newStates)
-  }, [providers, refreshGranolaConfig, refreshSlackConfig, refreshGmailStatus, useComposioForGoogle, refreshGoogleCalendarStatus, useComposioForGoogleCalendar])
+  }, [providers, refreshGranolaConfig, refreshSlackConfig, refreshKnowledgeSources, refreshGmailStatus, useComposioForGoogle, refreshGoogleCalendarStatus, useComposioForGoogleCalendar])
 
   // Refresh when active or providers change
   useEffect(() => {
@@ -587,9 +685,15 @@ export function useConnectors(active: boolean) {
     setSlackPickerOpen,
     slackDiscovering,
     slackDiscoverError,
+    slackKnowledgeEnabled,
+    setSlackKnowledgeEnabled,
+    slackKnowledgeChannels,
+    setSlackKnowledgeChannels,
+    slackKnowledgeSaving,
     handleSlackEnable,
     handleSlackSaveWorkspaces,
     handleSlackDisable,
+    handleSlackKnowledgeSave,
 
     // Gmail (Composio)
     useComposioForGoogle,
diff --git a/apps/x/packages/core/src/knowledge/build_graph.ts b/apps/x/packages/core/src/knowledge/build_graph.ts
index 3e05e611..ccfeea49 100644
--- a/apps/x/packages/core/src/knowledge/build_graph.ts
+++ b/apps/x/packages/core/src/knowledge/build_graph.ts
@@ -18,6 +18,9 @@ import { buildKnowledgeIndex, formatIndexForPrompt } from './knowledge_index.js'
 import { limitEventItems } from './limit_event_items.js';
 import { commitAll } from './version_history.js';
 import { getTagDefinitions } from './tag_system.js';
+import { knowledgeSourcesRepo } from './sources/repo.js';
+import { syncSlackKnowledgeSources } from './sources/sync_slack.js';
+import type { KnowledgeSourceConfig } from './sources/types.js';
 
 /**
  * Build obsidian-style knowledge graph by running topic extraction
@@ -35,12 +38,11 @@ const LEGACY_SUGGESTED_TOPICS_KNOWLEDGE_PATH = path.join(WorkDir, 'knowledge', '
 
 // Configuration for the graph builder service
 const SYNC_INTERVAL_MS = 15 * 1000; // 15 seconds
-const SOURCE_FOLDERS = [
-    'gmail_sync',
-    path.join('knowledge', 'Meetings', 'fireflies'),
-    path.join('knowledge', 'Meetings', 'granola'),
-    path.join('knowledge', 'Meetings', 'rowboat'),
-];
+function getEnabledFileSources(): KnowledgeSourceConfig[] {
+    return knowledgeSourcesRepo
+        .listEnabledSources()
+        .filter(source => source.provider !== 'voice_memo');
+}
 
 // Voice memos are now created directly in knowledge/Voice Memos/<date>/
 const VOICE_MEMOS_KNOWLEDGE_DIR = path.join(NOTES_OUTPUT_DIR, 'Voice Memos');
@@ -643,6 +645,15 @@ export async function processAllSources(): Promise<void> {
 
     let anyFilesProcessed = false;
 
+    try {
+        const slackFiles = await syncSlackKnowledgeSources();
+        if (slackFiles.length > 0) {
+            console.log(`[GraphBuilder] Slack sync wrote ${slackFiles.length} artifact files`);
+        }
+    } catch (error) {
+        console.error('[GraphBuilder] Error syncing Slack knowledge sources:', error);
+    }
+
     // Process voice memos first (they get moved to knowledge/)
     try {
         const voiceMemosProcessed = await processVoiceMemosForKnowledge();
@@ -654,12 +665,13 @@ export async function processAllSources(): Promise<void> {
     }
 
     const state = loadState();
-    const folderChanges: { folder: string; sourceDir: string; files: string[] }[] = [];
+    const folderChanges: { source: KnowledgeSourceConfig; sourceDir: string; files: string[] }[] = [];
     const countsByFolder: Record<string, number> = {};
     const allFiles: string[] = [];
+    const fileSources = getEnabledFileSources();
 
-    for (const folder of SOURCE_FOLDERS) {
-        const sourceDir = path.join(WorkDir, folder);
+    for (const source of fileSources) {
+        const sourceDir = path.join(WorkDir, source.artifactDir);
 
         // Skip if folder doesn't exist
         if (!fs.existsSync(sourceDir)) {
@@ -671,7 +683,7 @@ export async function processAllSources(): Promise<void> {
             let filesToProcess = getFilesToProcess(sourceDir, state);
 
             // For gmail_sync, only process emails that have been labeled AND don't have noise filter tags
-            if (folder === 'gmail_sync') {
+            if (source.provider === 'gmail') {
                 filesToProcess = filesToProcess.filter(filePath => {
                     try {
                         const content = fs.readFileSync(filePath, 'utf-8');
@@ -690,13 +702,13 @@ export async function processAllSources(): Promise<void> {
             }
 
             if (filesToProcess.length > 0) {
-                console.log(`[GraphBuilder] Found ${filesToProcess.length} new/changed files in ${folder}`);
-                folderChanges.push({ folder, sourceDir, files: filesToProcess });
-                countsByFolder[folder] = filesToProcess.length;
+                console.log(`[GraphBuilder] Found ${filesToProcess.length} new/changed files in ${source.id}`);
+                folderChanges.push({ source, sourceDir, files: filesToProcess });
+                countsByFolder[source.id] = filesToProcess.length;
                 allFiles.push(...filesToProcess);
             }
         } catch (error) {
-            console.error(`[GraphBuilder] Error processing ${folder}:`, error);
+            console.error(`[GraphBuilder] Error processing ${source.id}:`, error);
             // Continue with other folders even if one fails
         }
     }
@@ -706,7 +718,7 @@ export async function processAllSources(): Promise<void> {
             service: 'graph',
             message: 'Syncing knowledge graph',
             trigger: 'timer',
-            config: { sources: SOURCE_FOLDERS },
+            config: { sources: fileSources.map(source => source.id) },
         });
 
         const relativeFiles = allFiles.map(filePath => path.relative(WorkDir, filePath));
@@ -770,7 +782,8 @@ export async function processAllSources(): Promise<void> {
  */
 export async function init() {
     console.log('[GraphBuilder] Starting Knowledge Graph Builder Service...');
-    console.log(`[GraphBuilder] Monitoring folders: ${SOURCE_FOLDERS.join(', ')}, knowledge/Voice Memos`);
+    const sourceFolders = getEnabledFileSources().map(source => source.artifactDir);
+    console.log(`[GraphBuilder] Monitoring folders: ${sourceFolders.join(', ')}, knowledge/Voice Memos`);
     console.log(`[GraphBuilder] Will check for new content every ${SYNC_INTERVAL_MS / 1000} seconds`);
 
     // Initial run
diff --git a/apps/x/packages/core/src/knowledge/note_creation.ts b/apps/x/packages/core/src/knowledge/note_creation.ts
index baee1d2b..26901b9e 100644
--- a/apps/x/packages/core/src/knowledge/note_creation.ts
+++ b/apps/x/packages/core/src/knowledge/note_creation.ts
@@ -30,16 +30,16 @@ tools:
 
 **Current date and time:** ${new Date().toISOString()}
 
-Sources (emails, meetings, voice memos) are processed in roughly chronological order. This means:
+Sources (emails, meetings, voice memos, Slack messages, and connected-tool artifacts) are processed in roughly chronological order. This means:
 - Earlier sources may reference events that have since occurred — later sources will provide updates.
 - If a source mentions a future meeting or deadline, it may already be in the past by now. Use the current date above to reason about what is past vs. upcoming.
 - Don't treat old commitments as still "open" if later sources or the current date suggest they've likely been resolved.
 
 # Task
 
-You are a memory agent. You are given one or more source files (emails, meeting transcripts, or voice memos) to process. **The files in a request are independent of each other** — they are batched together only for efficiency, not because they are related. Process each source file on its own terms (see "Source Scoping" below). For each source file you will:
+You are a memory agent. You are given one or more source files (emails, meeting transcripts, voice memos, Slack messages, or other connected-tool artifacts) to process. **The files in a request are independent of each other** — they are batched together only for efficiency, not because they are related. Process each source file on its own terms (see "Source Scoping" below). For each source file you will:
 
-1. **Determine source type (meeting or email)**
+1. **Determine source type (meeting, email, voice memo, Slack, or connected-tool artifact)**
 2. **Evaluate if the source is worth processing**
 3. **Search for all existing related notes**
 4. **Resolve entities to canonical names**
@@ -49,7 +49,7 @@ You are a memory agent. You are given one or more source files (emails, meeting
 8. Create new notes or update existing notes
 9. **Apply state changes to existing notes**
 
-The core rule: **Both meetings and emails can create notes, but emails require personalized content — and a new People/Organization note from an email also requires the user to have replied at least once in the thread (the Email Reply Gate). Emails can always update existing notes regardless.**
+The core rule: **Meetings and voice memos can create notes freely. Emails require personalized content — and a new People/Organization note from an email also requires the user to have replied at least once in the thread (the Email Reply Gate). Slack and connected-tool artifacts can update existing notes when they carry clear state changes, decisions, commitments, or project facts; they should create new notes only when the artifact clearly identifies a durable person, organization, project, or topic worth tracking.**
 
 # Source Scoping (Batch Isolation) — READ FIRST
 
@@ -75,7 +75,7 @@ You have full read access to the existing knowledge directory. Use this extensiv
 
 # Inputs
 
-1. **source_file**: Path to a single file to process (email or meeting transcript)
+1. **source_file**: Path to a single file to process (email, meeting transcript, voice memo, Slack message, or connected-tool artifact)
 2. **knowledge_folder**: Path to Obsidian vault (read/write access)
 3. **user**: Information about the owner of this memory
    - name: e.g., "Arj"
@@ -170,7 +170,7 @@ ${renderNoteEffectRules()}
 
 # Step 0: Determine Source Type
 
-Read the source file and determine if it's a meeting or email.
+Read the source file and determine its source type.
 \`\`\`
 file-readText({ path: "{source_file}" })
 \`\`\`
@@ -191,10 +191,22 @@ file-readText({ path: "{source_file}" })
 - Has frontmatter \`path:\` field like \`Voice Memos/YYYY-MM-DD/...\`
 - Has \`## Transcript\` section
 
+**Slack indicators:**
+- YAML frontmatter has \`source: slack\`
+- Source file path is under \`knowledge_sources/slack/\`
+- Contains fields like \`Workspace:\`, \`Channel:\`, \`Author:\`, \`Thread TS:\`, or a \`## Message\` section
+
+**Connected-tool artifact indicators:**
+- YAML frontmatter has \`source:\` set to a provider like \`github\`, \`linear\`, \`jira\`, \`notion\`, etc.
+- Source file path is under \`knowledge_sources/<provider>/\`
+- Contains issue, PR, task, ticket, comment, status, or project metadata
+
 **Set processing mode:**
 - \`source_type = "meeting"\` → Can create new notes
 - \`source_type = "email"\` → Can create notes if personalized and relevant
 - \`source_type = "voice_memo"\` → Can create new notes (treat like meetings)
+- \`source_type = "slack"\` → Prefer updating existing project/person/topic notes; create new notes only for clear durable entities
+- \`source_type = "connected_tool"\` → Prefer updating existing project/topic notes; create new notes only for durable projects, organizations, repositories, issues, or initiatives
 
 ---
 
@@ -240,6 +252,22 @@ Emails containing calendar invites (\`.ics\` attachments or inline calendar data
 ## For Meetings and Voice Memos
 Always process — no filtering needed.
 
+## For Slack Messages
+Process Slack messages only when they contain durable knowledge:
+- Decisions, approvals, changes in project status, blockers, owners, deadlines, handoffs, or commitments
+- Facts about people, organizations, projects, customers, product areas, repositories, issues, or incidents
+- Meaningful summaries in long threads
+
+Skip Slack messages that are only acknowledgements, greetings, jokes, reactions, short coordination with no durable outcome, or vague statements that cannot be resolved to a known entity. For ambiguous updates like "x is done", update an existing note only if \`x\` resolves clearly from the message, channel, thread, or existing knowledge index. If it does not resolve clearly, skip rather than inventing a fact.
+
+## For Connected-Tool Artifacts
+Process artifacts from GitHub, Linear, Jira, and similar tools when they carry project or work-state changes:
+- Issue/PR/task created, assigned, closed, merged, reopened, blocked, or reprioritized
+- Status, owner, milestone, deadline, release, incident, customer, or decision changes
+- Comments that clarify requirements, decisions, blockers, or commitments
+
+Skip routine metadata churn and duplicated notifications unless they change durable knowledge.
+
 ## For Emails — Read YAML Frontmatter
 
 Emails have YAML frontmatter with labels prepended by the labeling agent:
diff --git a/apps/x/packages/core/src/knowledge/sources/rank_slack_home.ts b/apps/x/packages/core/src/knowledge/sources/rank_slack_home.ts
new file mode 100644
index 00000000..c21d45d4
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/sources/rank_slack_home.ts
@@ -0,0 +1,127 @@
+import { z } from 'zod';
+import { generateObject } from 'ai';
+import { createProvider } from '../../models/models.js';
+import {
+    getDefaultModelAndProvider,
+    getKgModel,
+    resolveProviderConfig,
+} from '../../models/defaults.js';
+import { captureLlmUsage } from '../../analytics/usage.js';
+import { withUseCase } from '../../analytics/use_case.js';
+
+export type SlackHomeRankCandidate = {
+    id: string;
+    workspaceName?: string;
+    channelName?: string;
+    author?: string;
+    text: string;
+    ts: string;
+};
+
+const RankedSlackMessagesSchema = z.object({
+    rankedIds: z.array(z.string()).describe('Message ids in the order they should appear on Home.'),
+});
+
+function timeRank(candidates: SlackHomeRankCandidate[], limit: number): string[] {
+    return [...candidates]
+        .sort((a, b) => Number(b.ts) - Number(a.ts))
+        .slice(0, limit)
+        .map(candidate => candidate.id);
+}
+
+function truncate(value: string, max: number): string {
+    return value.length <= max ? value : `${value.slice(0, max)}...`;
+}
+
+function buildPrompt(candidates: SlackHomeRankCandidate[], limit: number): string {
+    const messages = candidates.map((candidate, index) => {
+        const date = Number.isFinite(Number(candidate.ts))
+            ? new Date(Number(candidate.ts.split('.')[0]) * 1000).toISOString()
+            : candidate.ts;
+        return [
+            `## ${index + 1}. ${candidate.id}`,
+            `Workspace: ${candidate.workspaceName ?? 'unknown'}`,
+            `Channel: ${candidate.channelName ?? 'unknown'}`,
+            `Author: ${candidate.author ?? 'unknown'}`,
+            `Time: ${date}`,
+            `Text: ${truncate(candidate.text.replace(/\s+/g, ' ').trim(), 700)}`,
+        ].join('\n');
+    }).join('\n\n');
+
+    return `Choose up to ${limit} Slack messages to show on the user's Home screen.
+
+Prioritize messages that are likely useful at a glance:
+- direct questions or requests to the user
+- decisions, blockers, owners, deadlines, status changes, or shipped/fixed/done updates
+- project/customer/product updates
+- messages with clear actionability or durable knowledge
+
+Deprioritize:
+- greetings, thanks, jokes, reactions, short acknowledgements, bot noise
+- vague chatter without clear project/action relevance
+- near-duplicates of the same point
+
+Return only ids from the candidate list. Prefer relevance over recency, but use recency as a tiebreaker.
+
+# Candidates
+
+${messages}`;
+}
+
+export async function rankSlackHomeMessages(
+    candidates: SlackHomeRankCandidate[],
+    limit: number,
+): Promise<string[]> {
+    if (candidates.length <= limit) {
+        return timeRank(candidates, limit);
+    }
+
+    try {
+        const modelId = await getKgModel();
+        const { provider } = await getDefaultModelAndProvider();
+        const config = await resolveProviderConfig(provider);
+        const model = createProvider(config).languageModel(modelId);
+
+        const result = await withUseCase({ useCase: 'knowledge_sync', subUseCase: 'slack_home_rank' }, () => generateObject({
+            model,
+            system: 'You rank Slack messages for a personal productivity Home screen. Be selective and return valid ids only.',
+            prompt: buildPrompt(candidates, limit),
+            schema: RankedSlackMessagesSchema,
+        }));
+
+        captureLlmUsage({
+            useCase: 'knowledge_sync',
+            subUseCase: 'slack_home_rank',
+            model: modelId,
+            provider,
+            usage: result.usage,
+        });
+
+        const validIds = new Set(candidates.map(candidate => candidate.id));
+        const ranked = result.object.rankedIds.filter(id => validIds.has(id));
+        const seen = new Set<string>();
+        const deduped = ranked.filter(id => {
+            if (seen.has(id)) return false;
+            seen.add(id);
+            return true;
+        });
+
+        if (deduped.length === 0) {
+            return timeRank(candidates, limit);
+        }
+
+        const fallback = timeRank(candidates, limit);
+        for (const id of fallback) {
+            if (deduped.length >= limit) break;
+            if (!seen.has(id)) {
+                deduped.push(id);
+                seen.add(id);
+            }
+        }
+
+        return deduped.slice(0, limit);
+    } catch (error) {
+        console.warn('[SlackHomeRank] LLM ranking failed, falling back to recency:', error);
+        return timeRank(candidates, limit);
+    }
+}
diff --git a/apps/x/packages/core/src/knowledge/sources/repo.ts b/apps/x/packages/core/src/knowledge/sources/repo.ts
new file mode 100644
index 00000000..9d2362bc
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/sources/repo.ts
@@ -0,0 +1,113 @@
+import fs from 'fs';
+import path from 'path';
+import { WorkDir } from '../../config/config.js';
+import {
+    KnowledgeSourceConfig,
+    KnowledgeSourcesFile,
+    type KnowledgeSourcesFile as KnowledgeSourcesFileType,
+} from './types.js';
+
+const CONFIG_FILE = path.join(WorkDir, 'config', 'knowledge_sources.json');
+
+const BUILTIN_SOURCES: KnowledgeSourceConfig[] = [
+    {
+        id: 'gmail',
+        provider: 'gmail',
+        enabled: true,
+        artifactDir: 'gmail_sync',
+        syncMode: 'file',
+        scopes: [],
+    },
+    {
+        id: 'fireflies-meetings',
+        provider: 'meeting',
+        enabled: true,
+        artifactDir: path.join('knowledge', 'Meetings', 'fireflies'),
+        syncMode: 'file',
+        scopes: [],
+    },
+    {
+        id: 'granola-meetings',
+        provider: 'meeting',
+        enabled: true,
+        artifactDir: path.join('knowledge', 'Meetings', 'granola'),
+        syncMode: 'file',
+        scopes: [],
+    },
+    {
+        id: 'rowboat-meetings',
+        provider: 'meeting',
+        enabled: true,
+        artifactDir: path.join('knowledge', 'Meetings', 'rowboat'),
+        syncMode: 'file',
+        scopes: [],
+    },
+];
+
+function ensureConfigDir(): void {
+    fs.mkdirSync(path.dirname(CONFIG_FILE), { recursive: true });
+}
+
+function mergeBuiltinSources(config: KnowledgeSourcesFileType): KnowledgeSourcesFileType {
+    const byId = new Map(config.sources.map(source => [source.id, source]));
+    for (const builtin of BUILTIN_SOURCES) {
+        if (!byId.has(builtin.id)) {
+            byId.set(builtin.id, builtin);
+        }
+    }
+    return { sources: Array.from(byId.values()) };
+}
+
+export interface IKnowledgeSourcesRepo {
+    getConfig(): KnowledgeSourcesFileType;
+    setConfig(config: KnowledgeSourcesFileType): void;
+    listEnabledSources(): KnowledgeSourceConfig[];
+    upsertSource(source: KnowledgeSourceConfig): KnowledgeSourcesFileType;
+}
+
+export class FSKnowledgeSourcesRepo implements IKnowledgeSourcesRepo {
+    getConfig(): KnowledgeSourcesFileType {
+        try {
+            if (!fs.existsSync(CONFIG_FILE)) {
+                const config = { sources: BUILTIN_SOURCES };
+                this.setConfig(config);
+                return config;
+            }
+
+            const parsed = KnowledgeSourcesFile.parse(JSON.parse(fs.readFileSync(CONFIG_FILE, 'utf-8')));
+            const merged = mergeBuiltinSources(parsed);
+            if (merged.sources.length !== parsed.sources.length) {
+                this.setConfig(merged);
+            }
+            return merged;
+        } catch (error) {
+            console.error('[KnowledgeSources] Failed to load config:', error);
+            return { sources: BUILTIN_SOURCES };
+        }
+    }
+
+    setConfig(config: KnowledgeSourcesFileType): void {
+        const validated = KnowledgeSourcesFile.parse(mergeBuiltinSources(config));
+        ensureConfigDir();
+        fs.writeFileSync(CONFIG_FILE, JSON.stringify(validated, null, 2), 'utf-8');
+    }
+
+    listEnabledSources(): KnowledgeSourceConfig[] {
+        return this.getConfig().sources.filter(source => source.enabled);
+    }
+
+    upsertSource(source: KnowledgeSourceConfig): KnowledgeSourcesFileType {
+        const validated = KnowledgeSourceConfig.parse(source);
+        const config = this.getConfig();
+        const existingIndex = config.sources.findIndex(item => item.id === validated.id);
+        if (existingIndex >= 0) {
+            config.sources[existingIndex] = validated;
+        } else {
+            config.sources.push(validated);
+        }
+        this.setConfig(config);
+        return this.getConfig();
+    }
+}
+
+export const knowledgeSourcesRepo = new FSKnowledgeSourcesRepo();
diff --git a/apps/x/packages/core/src/knowledge/sources/sync_slack.ts b/apps/x/packages/core/src/knowledge/sources/sync_slack.ts
new file mode 100644
index 00000000..9299a3f5
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/sources/sync_slack.ts
@@ -0,0 +1,411 @@
+import fs from 'fs';
+import path from 'path';
+import { promisify } from 'util';
+import { execFile } from 'child_process';
+import { WorkDir } from '../../config/config.js';
+import { serviceLogger } from '../../services/service_logger.js';
+import { limitEventItems } from '../limit_event_items.js';
+import { createEvent } from '../../events/producer.js';
+import { knowledgeSourcesRepo } from './repo.js';
+import type { KnowledgeArtifact, KnowledgeSourceConfig, KnowledgeSourceScope } from './types.js';
+
+const execFileAsync = promisify(execFile);
+const DEFAULT_LIMIT = 100;
+const DEFAULT_SYNC_INTERVAL_MS = 5 * 60 * 1000;
+const DEFAULT_RECENT_BACKFILL_SECONDS = 6 * 60 * 60;
+const STATE_FILE = path.join(WorkDir, 'slack_knowledge_sync_state.json');
+const ARTIFACT_ROOT = path.join(WorkDir, 'knowledge_sources', 'slack');
+
+type SlackSyncState = {
+    lastSyncAt?: string;
+    sources?: Record<string, { lastSyncAt?: string }>;
+    channels: Record<string, { lastSeenTs?: string }>;
+};
+
+type SlackMessage = {
+    ts?: string;
+    thread_ts?: string;
+    user?: string;
+    username?: string;
+    text?: string;
+    body?: string;
+    content?: string;
+    channel?: string;
+    channel_id?: string;
+    channel_name?: string;
+    permalink?: string;
+    url?: string;
+    edited?: { ts?: string; user?: string };
+    reply_count?: number;
+    replies?: SlackMessage[];
+};
+
+function loadState(): SlackSyncState {
+    try {
+        if (fs.existsSync(STATE_FILE)) {
+            const parsed = JSON.parse(fs.readFileSync(STATE_FILE, 'utf-8')) as Partial<SlackSyncState>;
+            return { channels: {}, ...parsed };
+        }
+    } catch (error) {
+        console.error('[SlackKnowledge] Failed to load state:', error);
+    }
+    return { channels: {} };
+}
+
+function saveState(state: SlackSyncState): void {
+    fs.writeFileSync(STATE_FILE, JSON.stringify(state, null, 2), 'utf-8');
+}
+
+function isSourceDue(source: KnowledgeSourceConfig, state: SlackSyncState): boolean {
+    const sourceState = state.sources?.[source.id];
+    if (!sourceState?.lastSyncAt) return true;
+    const lastSyncMs = Date.parse(sourceState.lastSyncAt);
+    const intervalMs = source.intervalMs ?? DEFAULT_SYNC_INTERVAL_MS;
+    return !Number.isFinite(lastSyncMs) || Date.now() - lastSyncMs >= intervalMs;
+}
+
+function safeSegment(value: string): string {
+    return value
+        .replace(/^https?:\/\//, '')
+        .replace(/[\\/*?:"<>|#\s]+/g, '_')
+        .replace(/_+/g, '_')
+        .replace(/^_+|_+$/g, '')
+        .slice(0, 120) || 'unknown';
+}
+
+function slackTsToDate(ts: string): string {
+    const seconds = Number(ts.split('.')[0]);
+    if (!Number.isFinite(seconds)) {
+        return new Date().toISOString();
+    }
+    return new Date(seconds * 1000).toISOString();
+}
+
+function subtractSlackTs(ts: string | undefined, seconds: number): string | undefined {
+    if (!ts) return undefined;
+    const value = Number(ts);
+    if (!Number.isFinite(value)) return undefined;
+    return Math.max(0, value - seconds).toFixed(6);
+}
+
+function compareSlackTs(a: string | undefined, b: string | undefined): number {
+    const an = Number(a);
+    const bn = Number(b);
+    if (!Number.isFinite(an) && !Number.isFinite(bn)) return 0;
+    if (!Number.isFinite(an)) return -1;
+    if (!Number.isFinite(bn)) return 1;
+    return an - bn;
+}
+
+function parseJsonOutput(stdout: string): unknown {
+    const trimmed = stdout.trim();
+    if (!trimmed) return [];
+    return JSON.parse(trimmed);
+}
+
+function extractMessages(raw: unknown): SlackMessage[] {
+    if (Array.isArray(raw)) return raw as SlackMessage[];
+    if (raw && typeof raw === 'object') {
+        const obj = raw as Record<string, unknown>;
+        const candidates = [obj.messages, obj.items, obj.results, obj.data];
+        for (const candidate of candidates) {
+            if (Array.isArray(candidate)) return candidate as SlackMessage[];
+        }
+    }
+    return [];
+}
+
+function getMessageText(message: SlackMessage): string {
+    return message.text ?? message.body ?? message.content ?? '';
+}
+
+function getMessageAuthor(message: SlackMessage): string {
+    return message.username ?? message.user ?? 'unknown';
+}
+
+async function runAgentSlack(args: string[]): Promise<unknown> {
+    const { stdout } = await execFileAsync('agent-slack', args, {
+        timeout: 30_000,
+        maxBuffer: 2 * 1024 * 1024,
+    });
+    return parseJsonOutput(stdout);
+}
+
+async function listMessages(source: KnowledgeSourceConfig, scope: KnowledgeSourceScope, oldest?: string): Promise<SlackMessage[]> {
+    const target = scope.id;
+    const args = [
+        'message',
+        'list',
+        target,
+        '--limit',
+        String(source.filters?.limit ?? DEFAULT_LIMIT),
+        '--max-body-chars',
+        String(source.filters?.maxBodyChars ?? 4000),
+    ];
+
+    if (scope.workspaceUrl) {
+        args.push('--workspace', scope.workspaceUrl);
+    }
+
+    if (oldest) {
+        args.push('--oldest', oldest);
+    }
+
+    const raw = await runAgentSlack(args);
+    return extractMessages(raw)
+        .filter(message => message.ts && getMessageText(message).trim().length > 0)
+        .sort((a, b) => compareSlackTs(a.ts, b.ts));
+}
+
+function artifactForMessage(source: KnowledgeSourceConfig, scope: KnowledgeSourceScope, message: SlackMessage): KnowledgeArtifact | null {
+    if (!message.ts) return null;
+    const channelName = scope.name ?? message.channel_name ?? message.channel ?? message.channel_id ?? scope.id;
+    const workspaceName = scope.workspaceUrl ?? 'Slack';
+    const version = message.edited?.ts ?? message.ts;
+    const url = message.permalink ?? message.url;
+    const title = `Slack message in ${channelName}`;
+    const occurredAt = slackTsToDate(message.ts);
+    const author = getMessageAuthor(message);
+    const body = getMessageText(message).trim();
+
+    const bodyMarkdown = [
+        `# ${title}`,
+        ``,
+        `**Workspace:** ${workspaceName}`,
+        `**Channel:** ${channelName}`,
+        `**Author:** ${author}`,
+        `**Timestamp:** ${occurredAt}`,
+        message.thread_ts ? `**Thread TS:** ${message.thread_ts}` : '',
+        url ? `**Link:** ${url}` : '',
+        ``,
+        `## Message`,
+        ``,
+        body,
+    ].filter(line => line !== '').join('\n');
+
+    return {
+        sourceId: source.id,
+        provider: 'slack',
+        externalId: `${scope.workspaceUrl ?? 'workspace'}:${scope.id}:${message.ts}`,
+        version,
+        occurredAt,
+        title,
+        bodyMarkdown,
+        url,
+        metadata: {
+            workspaceUrl: scope.workspaceUrl,
+            channelId: scope.id,
+            channelName,
+            author,
+            ts: message.ts,
+            threadTs: message.thread_ts,
+            editedTs: message.edited?.ts,
+        },
+    };
+}
+
+function writeArtifact(source: KnowledgeSourceConfig, scope: KnowledgeSourceScope, artifact: KnowledgeArtifact): string | null {
+    const workspace = safeSegment(scope.workspaceUrl ?? 'workspace');
+    const channel = safeSegment(scope.name ?? scope.id);
+    const ts = safeSegment(artifact.metadata.ts as string);
+    const dir = path.join(WorkDir, source.artifactDir || path.join('knowledge_sources', 'slack'), workspace, channel);
+    fs.mkdirSync(dir, { recursive: true });
+
+    const filePath = path.join(dir, `${ts}.md`);
+    const frontmatter = [
+        '---',
+        `source: ${artifact.provider}`,
+        `source_id: ${artifact.sourceId}`,
+        `external_id: ${JSON.stringify(artifact.externalId)}`,
+        `version: ${JSON.stringify(artifact.version)}`,
+        `occurred_at: ${JSON.stringify(artifact.occurredAt)}`,
+        artifact.url ? `url: ${JSON.stringify(artifact.url)}` : '',
+        '---',
+        '',
+    ].filter(Boolean).join('\n');
+
+    const content = `${frontmatter}${artifact.bodyMarkdown}\n`;
+    if (fs.existsSync(filePath)) {
+        try {
+            if (fs.readFileSync(filePath, 'utf-8') === content) {
+                return null;
+            }
+        } catch {
+            // Fall through and rewrite the artifact.
+        }
+    }
+
+    fs.writeFileSync(filePath, content, 'utf-8');
+    return filePath;
+}
+
+async function publishSlackSyncEvent(files: string[]): Promise<void> {
+    if (files.length === 0) return;
+    const relativeFiles = files.map(file => path.relative(WorkDir, file));
+    await createEvent({
+        source: 'slack',
+        type: 'slack.synced',
+        createdAt: new Date().toISOString(),
+        payload: [
+            '# Slack knowledge sync update',
+            '',
+            `${files.length} new/updated message artifact${files.length === 1 ? '' : 's'}.`,
+            '',
+            ...relativeFiles.slice(0, 20).map(file => `- ${file}`),
+        ].join('\n'),
+    });
+}
+
+async function syncSource(source: KnowledgeSourceConfig): Promise<string[]> {
+    if (!source.enabled || source.provider !== 'slack') return [];
+    if (source.scopes.length === 0) {
+        console.log(`[SlackKnowledge] Source ${source.id} has no channel scopes; skipping`);
+        return [];
+    }
+
+    const state = loadState();
+    const sourceState = state.sources?.[source.id];
+    const intervalMs = source.intervalMs ?? DEFAULT_SYNC_INTERVAL_MS;
+    if (sourceState?.lastSyncAt) {
+        const lastSyncMs = Date.parse(sourceState.lastSyncAt);
+        if (Number.isFinite(lastSyncMs) && Date.now() - lastSyncMs < intervalMs) {
+            return [];
+        }
+    }
+
+    const writtenFiles: string[] = [];
+
+    for (const scope of source.scopes.filter(scope => scope.type === 'channel')) {
+        const key = `${source.id}:${scope.workspaceUrl ?? ''}:${scope.id}`;
+        const channelState = state.channels[key] ?? {};
+        const recentBackfillSeconds = Number(source.filters?.recentBackfillSeconds ?? DEFAULT_RECENT_BACKFILL_SECONDS);
+        const oldest = subtractSlackTs(channelState.lastSeenTs, recentBackfillSeconds);
+        const messages = await listMessages(source, scope, oldest);
+        let newestTs = channelState.lastSeenTs;
+
+        for (const message of messages) {
+            if (compareSlackTs(message.ts, channelState.lastSeenTs) <= 0 && !message.edited?.ts) {
+                continue;
+            }
+            const artifact = artifactForMessage(source, scope, message);
+            if (!artifact) continue;
+            const writtenFile = writeArtifact(source, scope, artifact);
+            if (writtenFile) {
+                writtenFiles.push(writtenFile);
+            }
+            if (compareSlackTs(message.ts, newestTs) > 0) {
+                newestTs = message.ts;
+            }
+        }
+
+        state.channels[key] = { lastSeenTs: newestTs };
+    }
+
+    state.lastSyncAt = new Date().toISOString();
+    state.sources = {
+        ...(state.sources ?? {}),
+        [source.id]: { lastSyncAt: state.lastSyncAt },
+    };
+    saveState(state);
+    return writtenFiles;
+}
+
+export async function syncSlackKnowledgeSources(): Promise<string[]> {
+    const state = loadState();
+    const sources = knowledgeSourcesRepo
+        .listEnabledSources()
+        .filter(source => source.provider === 'slack' && source.syncMode === 'poll')
+        .filter(source => isSourceDue(source, state));
+
+    if (sources.length === 0) return [];
+
+    const run = await serviceLogger.startRun({
+        service: 'slack',
+        message: 'Syncing Slack knowledge sources',
+        trigger: 'timer',
+    });
+
+    const writtenFiles: string[] = [];
+    let hadError = false;
+
+    try {
+        for (const source of sources) {
+            const files = await syncSource(source);
+            writtenFiles.push(...files);
+        }
+
+        if (writtenFiles.length > 0) {
+            const relativeFiles = writtenFiles.map(file => path.relative(WorkDir, file));
+            const limitedFiles = limitEventItems(relativeFiles);
+            await serviceLogger.log({
+                type: 'changes_identified',
+                service: run.service,
+                runId: run.runId,
+                level: 'info',
+                message: `Slack updates: ${writtenFiles.length} message artifact${writtenFiles.length === 1 ? '' : 's'}`,
+                counts: { messages: writtenFiles.length },
+                items: limitedFiles.items,
+                truncated: limitedFiles.truncated,
+            });
+            await publishSlackSyncEvent(writtenFiles);
+        }
+    } catch (error) {
+        hadError = true;
+        console.error('[SlackKnowledge] Sync failed:', error);
+        await serviceLogger.log({
+            type: 'error',
+            service: run.service,
+            runId: run.runId,
+            level: 'error',
+            message: 'Slack knowledge sync error',
+            error: error instanceof Error ? error.message : String(error),
+        });
+    }
+
+    await serviceLogger.log({
+        type: 'run_complete',
+        service: run.service,
+        runId: run.runId,
+        level: hadError ? 'error' : 'info',
+        message: `Slack sync complete: ${writtenFiles.length} artifact${writtenFiles.length === 1 ? '' : 's'}`,
+        durationMs: Date.now() - run.startedAt,
+        outcome: hadError ? 'error' : 'ok',
+        summary: { artifacts: writtenFiles.length },
+    });
+
+    return writtenFiles;
+}
+
+export function getSlackKnowledgeArtifactRoot(): string {
+    return ARTIFACT_ROOT;
+}
+
+let wakeResolve: (() => void) | null = null;
+
+export function triggerSync(): void {
+    if (wakeResolve) {
+        wakeResolve();
+        wakeResolve = null;
+    }
+}
+
+function interruptibleSleep(ms: number): Promise<void> {
+    return new Promise(resolve => {
+        const timeout = setTimeout(() => {
+            wakeResolve = null;
+            resolve();
+        }, ms);
+        wakeResolve = () => {
+            clearTimeout(timeout);
+            resolve();
+        };
+    });
+}
+
+export async function init(): Promise<void> {
+    console.log(`[SlackKnowledge] Starting Slack knowledge sync. Polling every ${DEFAULT_SYNC_INTERVAL_MS / 1000}s`);
+    while (true) {
+        await syncSlackKnowledgeSources();
+        await interruptibleSleep(DEFAULT_SYNC_INTERVAL_MS);
+    }
+}
diff --git a/apps/x/packages/core/src/knowledge/sources/types.ts b/apps/x/packages/core/src/knowledge/sources/types.ts
new file mode 100644
index 00000000..e2163fd1
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/sources/types.ts
@@ -0,0 +1,49 @@
+import { z } from 'zod';
+
+export const KnowledgeSourceProvider = z.enum([
+    'gmail',
+    'meeting',
+    'voice_memo',
+    'slack',
+    'github',
+    'linear',
+]);
+export type KnowledgeSourceProvider = z.infer<typeof KnowledgeSourceProvider>;
+
+export const KnowledgeSourceScope = z.object({
+    type: z.string(),
+    id: z.string(),
+    name: z.string().optional(),
+    workspaceUrl: z.string().optional(),
+});
+export type KnowledgeSourceScope = z.infer<typeof KnowledgeSourceScope>;
+
+export const KnowledgeSourceConfig = z.object({
+    id: z.string(),
+    provider: KnowledgeSourceProvider,
+    enabled: z.boolean(),
+    artifactDir: z.string(),
+    syncMode: z.enum(['file', 'poll', 'event', 'manual']).default('file'),
+    intervalMs: z.number().int().positive().optional(),
+    scopes: z.array(KnowledgeSourceScope).default([]),
+    instructions: z.string().optional(),
+    filters: z.record(z.string(), z.unknown()).optional(),
+});
+export type KnowledgeSourceConfig = z.infer<typeof KnowledgeSourceConfig>;
+
+export const KnowledgeSourcesFile = z.object({
+    sources: z.array(KnowledgeSourceConfig),
+});
+export type KnowledgeSourcesFile = z.infer<typeof KnowledgeSourcesFile>;
+
+export interface KnowledgeArtifact {
+    sourceId: string;
+    provider: KnowledgeSourceProvider;
+    externalId: string;
+    version: string;
+    occurredAt: string;
+    title: string;
+    bodyMarkdown: string;
+    url?: string;
+    metadata: Record<string, unknown>;
+}
diff --git a/apps/x/packages/shared/src/ipc.ts b/apps/x/packages/shared/src/ipc.ts
index 092a4b29..fce64371 100644
--- a/apps/x/packages/shared/src/ipc.ts
+++ b/apps/x/packages/shared/src/ipc.ts
@@ -24,6 +24,25 @@ import { EmailBlockSchema, GmailThreadSchema } from './blocks.js';
 // Runtime Validation Schemas (Single Source of Truth)
 // ============================================================================
 
+const KnowledgeSourceScopeSchema = z.object({
+  type: z.string(),
+  id: z.string(),
+  name: z.string().optional(),
+  workspaceUrl: z.string().optional(),
+});
+
+const KnowledgeSourceConfigSchema = z.object({
+  id: z.string(),
+  provider: z.enum(['gmail', 'meeting', 'voice_memo', 'slack', 'github', 'linear']),
+  enabled: z.boolean(),
+  artifactDir: z.string(),
+  syncMode: z.enum(['file', 'poll', 'event', 'manual']).default('file'),
+  intervalMs: z.number().int().positive().optional(),
+  scopes: z.array(KnowledgeSourceScopeSchema).default([]),
+  instructions: z.string().optional(),
+  filters: z.record(z.string(), z.unknown()).optional(),
+});
+
 const ipcSchemas = {
   'app:getVersions': {
     req: z.null(),
@@ -478,6 +497,52 @@ const ipcSchemas = {
       error: z.string().optional(),
     }),
   },
+  'slack:listChannels': {
+    req: z.object({
+      workspaceUrl: z.string(),
+    }),
+    res: z.object({
+      channels: z.array(z.object({
+        id: z.string(),
+        name: z.string(),
+        isPrivate: z.boolean().optional(),
+        isMember: z.boolean().optional(),
+      })),
+      error: z.string().optional(),
+    }),
+  },
+  'slack:getRecentMessages': {
+    req: z.object({
+      limit: z.number().int().positive().max(20).optional(),
+    }),
+    res: z.object({
+      enabled: z.boolean(),
+      messages: z.array(z.object({
+        id: z.string(),
+        workspaceName: z.string().optional(),
+        workspaceUrl: z.string().optional(),
+        channelId: z.string().optional(),
+        channelName: z.string().optional(),
+        author: z.string().optional(),
+        text: z.string(),
+        ts: z.string(),
+        url: z.string().optional(),
+      })),
+      error: z.string().optional(),
+    }),
+  },
+  'knowledgeSources:getConfig': {
+    req: z.null(),
+    res: z.object({
+      sources: z.array(KnowledgeSourceConfigSchema),
+    }),
+  },
+  'knowledgeSources:upsert': {
+    req: KnowledgeSourceConfigSchema,
+    res: z.object({
+      sources: z.array(KnowledgeSourceConfigSchema),
+    }),
+  },
   'onboarding:getStatus': {
     req: z.null(),
     res: z.object({
diff --git a/apps/x/packages/shared/src/service-events.ts b/apps/x/packages/shared/src/service-events.ts
index b7a7c579..b4a8bf4b 100644
--- a/apps/x/packages/shared/src/service-events.ts
+++ b/apps/x/packages/shared/src/service-events.ts
@@ -6,6 +6,7 @@ export const ServiceName = z.enum([
   'calendar',
   'fireflies',
   'granola',
+  'slack',
   'voice_memo',
   'email_labeling',
   'note_tagging',