Refactor: move model config parsing from renderer to main process via IPC

The renderer was reading config/models.json via workspace:readFile and
manually parsing the provider/model structure. This moves that logic into
a dedicated models:getConfiguredModels IPC handler backed by a new
getAllConfiguredModels() method on the model config repo, matching the
existing models:saveConfig pattern.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/x/apps/main/src/ipc.ts

@@ -455,6 +455,10 @@ export function setupIpcHandlers() {
       await repo.setConfig(args);
       return { success: true };
     },
+    'models:getConfiguredModels': async () => {
+      const repo = container.resolve<IModelConfigRepo>('modelConfigRepo');
+      return repo.getAllConfiguredModels();
+    },
     'oauth:connect': async (_event, args) => {
       return await connectProvider(args.provider, args.clientId?.trim());
     },

apps/x/apps/renderer/src/components/chat-input-with-mentions.tsx

@@ -44,6 +44,10 @@ import {
   usePromptInputController,
 } from '@/components/ai-elements/prompt-input'
 import { toast } from 'sonner'
+import { z } from 'zod'
+import { ConfiguredModelEntry } from '@x/shared/src/models.js'
+
+type ConfiguredModel = z.infer<typeof ConfiguredModelEntry>
 
 export type StagedAttachment = {
   id: string
@@ -68,15 +72,6 @@ const providerDisplayNames: Record<string, string> = {
   'openai-compatible': 'OpenAI-Compatible',
 }
 
-interface ConfiguredModel {
-  flavor: string
-  model: string
-  apiKey?: string
-  baseURL?: string
-  headers?: Record<string, string>
-  knowledgeGraphModel?: string
-}
-
 function getAttachmentIcon(kind: AttachmentIconKind) {
   switch (kind) {
     case 'audio':
@@ -157,45 +152,13 @@ function ChatInputInner({
   const [searchEnabled, setSearchEnabled] = useState(false)
   const [searchAvailable, setSearchAvailable] = useState(false)
 
-  // Load model config from disk (on mount and whenever tab becomes active)
+  // Load model config via IPC (on mount and whenever tab becomes active)
   const loadModelConfig = useCallback(async () => {
     try {
-      const result = await window.ipc.invoke('workspace:readFile', { path: 'config/models.json' })
+      const result = await window.ipc.invoke('models:getConfiguredModels', null)
-      const parsed = JSON.parse(result.data)
+      setConfiguredModels(result.models)
-      const models: ConfiguredModel[] = []
+      if (result.activeModelKey) {
-      if (parsed?.providers) {
+        setActiveModelKey(result.activeModelKey)
-        for (const [flavor, entry] of Object.entries(parsed.providers)) {
-          const e = entry as Record<string, unknown>
-          const modelList: string[] = Array.isArray(e.models) ? e.models as string[] : []
-          const singleModel = typeof e.model === 'string' ? e.model : ''
-          const allModels = modelList.length > 0 ? modelList : singleModel ? [singleModel] : []
-          for (const model of allModels) {
-            if (model) {
-              models.push({
-                flavor,
-                model,
-                apiKey: (e.apiKey as string) || undefined,
-                baseURL: (e.baseURL as string) || undefined,
-                headers: (e.headers as Record<string, string>) || undefined,
-                knowledgeGraphModel: (e.knowledgeGraphModel as string) || undefined,
-              })
-            }
-          }
-        }
-      }
-      const defaultKey = parsed?.provider?.flavor && parsed?.model
-        ? `${parsed.provider.flavor}/${parsed.model}`
-        : ''
-      models.sort((a, b) => {
-        const aKey = `${a.flavor}/${a.model}`
-        const bKey = `${b.flavor}/${b.model}`
-        if (aKey === defaultKey) return -1
-        if (bKey === defaultKey) return 1
-        return 0
-      })
-      setConfiguredModels(models)
-      if (defaultKey) {
-        setActiveModelKey(defaultKey)
       }
     } catch {
       // No config yet

apps/x/packages/core/src/models/repo.ts

@@ -3,11 +3,15 @@ import { WorkDir } from "../config/config.js";
 import fs from "fs/promises";
 import path from "path";
 import z from "zod";
+import { ConfiguredModelsResult, LlmProvider } from "@x/shared/dist/models.js";
+
+type LlmProviderFlavor = z.infer<typeof LlmProvider>["flavor"];
 
 export interface IModelConfigRepo {
     ensureConfig(): Promise<void>;
     getConfig(): Promise<z.infer<typeof ModelConfig>>;
     setConfig(config: z.infer<typeof ModelConfig>): Promise<void>;
+    getAllConfiguredModels(): Promise<z.infer<typeof ConfiguredModelsResult>>;
 }
 
 const defaultConfig: z.infer<typeof ModelConfig> = {
@@ -56,4 +60,45 @@ export class FSModelConfigRepo implements IModelConfigRepo {
         const toWrite = { ...config, providers: existingProviders };
         await fs.writeFile(this.configPath, JSON.stringify(toWrite, null, 2));
     }
+
+    async getAllConfiguredModels(): Promise<z.infer<typeof ConfiguredModelsResult>> {
+        const raw = await fs.readFile(this.configPath, "utf8");
+        const parsed = JSON.parse(raw);
+        const models: z.infer<typeof ConfiguredModelsResult>["models"] = [];
+
+        if (parsed?.providers) {
+            for (const [flavor, entry] of Object.entries(parsed.providers) as [LlmProviderFlavor, unknown][]) {
+                const e = entry as Record<string, unknown>;
+                const modelList: string[] = Array.isArray(e.models) ? e.models as string[] : [];
+                const singleModel = typeof e.model === "string" ? e.model : "";
+                const allModels = modelList.length > 0 ? modelList : singleModel ? [singleModel] : [];
+                for (const model of allModels) {
+                    if (model) {
+                        models.push({
+                            flavor,
+                            model,
+                            apiKey: (e.apiKey as string) || undefined,
+                            baseURL: (e.baseURL as string) || undefined,
+                            headers: (e.headers as Record<string, string>) || undefined,
+                            knowledgeGraphModel: (e.knowledgeGraphModel as string) || undefined,
+                        });
+                    }
+                }
+            }
+        }
+
+        const activeModelKey = parsed?.provider?.flavor && parsed?.model
+            ? `${parsed.provider.flavor}/${parsed.model}`
+            : "";
+
+        models.sort((a, b) => {
+            const aKey = `${a.flavor}/${a.model}`;
+            const bKey = `${b.flavor}/${b.model}`;
+            if (aKey === activeModelKey) return -1;
+            if (bKey === activeModelKey) return 1;
+            return 0;
+        });
+
+        return { models, activeModelKey };
+    }
 }

apps/x/packages/shared/src/ipc.ts

@@ -2,7 +2,7 @@ import { z } from 'zod';
 import { RelPath, Encoding, Stat, DirEntry, ReaddirOptions, ReadFileResult, WorkspaceChangeEvent, WriteFileOptions, WriteFileResult, RemoveOptions } from './workspace.js';
 import { ListToolsResponse } from './mcp.js';
 import { AskHumanResponsePayload, CreateRunOptions, Run, ListRunsResponse, ToolPermissionAuthorizePayload } from './runs.js';
-import { LlmModelConfig } from './models.js';
+import { LlmModelConfig, ConfiguredModelsResult } from './models.js';
 import { AgentScheduleConfig, AgentScheduleEntry } from './agent-schedule.js';
 import { AgentScheduleState } from './agent-schedule-state.js';
 import { ServiceEvent } from './service-events.js';
@@ -219,6 +219,10 @@ const ipcSchemas = {
       success: z.literal(true),
     }),
   },
+  'models:getConfiguredModels': {
+    req: z.null(),
+    res: ConfiguredModelsResult,
+  },
   'oauth:connect': {
     req: z.object({
       provider: z.string(),

apps/x/packages/shared/src/models.ts

@@ -13,3 +13,17 @@ export const LlmModelConfig = z.object({
   models: z.array(z.string()).optional(),
   knowledgeGraphModel: z.string().optional(),
 });
+
+export const ConfiguredModelEntry = z.object({
+  flavor: LlmProvider.shape.flavor,
+  model: z.string(),
+  apiKey: z.string().optional(),
+  baseURL: z.string().optional(),
+  headers: z.record(z.string(), z.string()).optional(),
+  knowledgeGraphModel: z.string().optional(),
+});
+
+export const ConfiguredModelsResult = z.object({
+  models: z.array(ConfiguredModelEntry),
+  activeModelKey: z.string(),
+});