diff --git a/packages/context/src/ingest/tools/warehouse-verification/entity-details.tool.test.ts b/packages/context/src/ingest/tools/warehouse-verification/entity-details.tool.test.ts
new file mode 100644
index 00000000..6511580d
--- /dev/null
+++ b/packages/context/src/ingest/tools/warehouse-verification/entity-details.tool.test.ts
@@ -0,0 +1,137 @@
+import { mkdtemp, rm } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { afterEach, beforeEach, describe, expect, it } from 'vitest';
+import { initKtxProject, type KtxLocalProject } from '../../../project/index.js';
+import type { ToolContext } from '../../../tools/index.js';
+import { EntityDetailsTool } from './entity-details.tool.js';
+import { WarehouseCatalogService } from './warehouse-catalog.service.js';
+
+describe('EntityDetailsTool', () => {
+  let tempDir: string;
+  let project: KtxLocalProject;
+  let tool: EntityDetailsTool;
+  let context: ToolContext;
+
+  beforeEach(async () => {
+    tempDir = await mkdtemp(join(tmpdir(), 'ktx-entity-details-'));
+    project = await initKtxProject({ projectDir: join(tempDir, 'project'), projectName: 'warehouse' });
+    await seedLiveDatabaseScan();
+    tool = new EntityDetailsTool(() => new WarehouseCatalogService({ fileStore: project.fileStore }));
+    context = {
+      sourceId: 'ingest',
+      messageId: 'm1',
+      userId: 'system',
+      session: {
+        allowedConnectionNames: new Set(['warehouse']),
+      } as any,
+    };
+  });
+
+  afterEach(async () => {
+    await rm(tempDir, { recursive: true, force: true });
+  });
+
+  async function seedLiveDatabaseScan(connectionName = 'warehouse', syncId = 'sync-1') {
+    const root = `raw-sources/${connectionName}/live-database/${syncId}`;
+    await project.fileStore.writeFile(
+      `${root}/connection.json`,
+      JSON.stringify({ connectionId: connectionName, driver: 'postgres', extractedAt: '2026-05-12T00:00:00.000Z' }, null, 2),
+      'ktx',
+      'ktx@example.com',
+      'seed connection',
+    );
+    await project.fileStore.writeFile(
+      `${root}/tables/orders.json`,
+      JSON.stringify(
+        {
+          catalog: null,
+          db: 'public',
+          name: 'orders',
+          kind: 'table',
+          comment: 'Customer orders',
+          estimatedRows: 12,
+          columns: [
+            {
+              name: 'id',
+              nativeType: 'integer',
+              normalizedType: 'integer',
+              dimensionType: 'number',
+              nullable: false,
+              primaryKey: true,
+              comment: 'Order id',
+            },
+            {
+              name: 'status',
+              nativeType: 'text',
+              normalizedType: 'text',
+              dimensionType: 'string',
+              nullable: false,
+              primaryKey: false,
+              comment: 'Order status',
+            },
+          ],
+          foreignKeys: [],
+        },
+        null,
+        2,
+      ),
+      'ktx',
+      'ktx@example.com',
+      'seed orders',
+    );
+    await project.fileStore.writeFile(
+      `${root}/enrichment/relationship-profile.json`,
+      JSON.stringify(
+        {
+          connectionId: connectionName,
+          driver: 'postgres',
+          tables: [{ table: { catalog: null, db: 'public', name: 'orders' }, rowCount: 12 }],
+          columns: {
+            'orders.status': {
+              table: { catalog: null, db: 'public', name: 'orders' },
+              column: 'status',
+              rowCount: 12,
+              nullCount: 0,
+              distinctCount: 2,
+              nullRate: 0,
+              sampleValues: ['paid', 'refunded'],
+            },
+          },
+        },
+        null,
+        2,
+      ),
+      'ktx',
+      'ktx@example.com',
+      'seed profile',
+    );
+  }
+
+  it('returns scoped table detail for a display target', async () => {
+    const result = await tool.call({ connectionName: 'warehouse', targets: [{ display: 'public.orders' }] }, context);
+
+    expect(result.markdown).toContain('### public.orders');
+    expect(result.markdown).toContain('- status (text, nullable=false)');
+    expect(result.markdown).toContain('sample: ["paid","refunded"]');
+    expect(result.structured.scanAvailable).toBe(true);
+    expect(result.structured.resolved).toHaveLength(1);
+  });
+
+  it('returns a no-scan state distinct from not found', async () => {
+    const result = await tool.call(
+      { connectionName: 'empty', targets: [{ display: 'public.orders' }] },
+      { ...context, session: { ...context.session!, allowedConnectionNames: new Set(['empty']) } },
+    );
+
+    expect(result.markdown).toContain('No live-database scan available for connection "empty"; run `ktx scan` first.');
+    expect(result.structured.scanAvailable).toBe(false);
+  });
+
+  it('refuses out-of-scope connections', async () => {
+    const result = await tool.call({ connectionName: 'billing', targets: [{ display: 'public.orders' }] }, context);
+
+    expect(result.markdown).toContain('Connection "billing" is not available to this ingest stage.');
+    expect(result.structured.scanAvailable).toBe(false);
+  });
+});
diff --git a/packages/context/src/ingest/tools/warehouse-verification/entity-details.tool.ts b/packages/context/src/ingest/tools/warehouse-verification/entity-details.tool.ts
new file mode 100644
index 00000000..58f5fb35
--- /dev/null
+++ b/packages/context/src/ingest/tools/warehouse-verification/entity-details.tool.ts
@@ -0,0 +1,116 @@
+import { z } from 'zod';
+import type { KtxTableRef } from '../../../scan/types.js';
+import { BaseTool, type ToolContext, type ToolOutput } from '../../../tools/index.js';
+import { WarehouseCatalogService, type TableDetail } from './warehouse-catalog.service.js';
+
+const targetSchema = z.union([
+  z.object({ display: z.string().min(1) }),
+  z.object({
+    catalog: z.string().nullable(),
+    db: z.string().nullable(),
+    name: z.string().min(1),
+    column: z.string().optional(),
+  }),
+]);
+
+const entityDetailsInputSchema = z.object({
+  connectionName: z.string().regex(/^[a-zA-Z0-9][a-zA-Z0-9_-]*$/),
+  targets: z.array(targetSchema).min(1).max(50),
+});
+
+type EntityDetailsInput = z.infer<typeof entityDetailsInputSchema>;
+
+export interface EntityDetailsStructured {
+  resolved: TableDetail[];
+  missing: Array<{ target: unknown; candidates: KtxTableRef[] }>;
+  scanAvailable: boolean;
+}
+
+function allowedConnectionNames(context: ToolContext): ReadonlySet<string> | null {
+  return context.session?.allowedConnectionNames ?? null;
+}
+
+function sampleText(values: string[]): string {
+  return values.length > 0 ? ` - sample: ${JSON.stringify(values.slice(0, 10))}` : '';
+}
+
+function appendTableMarkdown(parts: string[], detail: TableDetail, columnName?: string): void {
+  const columns = columnName ? detail.columns.filter((column) => column.name === columnName) : detail.columns;
+  parts.push(`### ${detail.display}`);
+  parts.push(`Type: ${detail.kind} | Native columns: ${detail.columns.length}`);
+  if (detail.description || detail.comment) {
+    parts.push(`Description: ${detail.description ?? detail.comment}`);
+  }
+  parts.push('', 'Columns:');
+  for (const column of columns) {
+    const pk = column.primaryKey ? ', PK' : '';
+    parts.push(`- ${column.name} (${column.nativeType}, nullable=${column.nullable}${pk})${sampleText(column.sampleValues)}`);
+  }
+  parts.push('');
+}
+
+export class EntityDetailsTool extends BaseTool<typeof entityDetailsInputSchema> {
+  readonly name = 'entity_details';
+
+  constructor(private readonly catalogFactory: (context: ToolContext) => WarehouseCatalogService) {
+    super();
+  }
+
+  get description(): string {
+    return 'Verify warehouse tables and columns from the latest live-database scan before writing them into wiki or semantic-layer output.';
+  }
+
+  get inputSchema() {
+    return entityDetailsInputSchema;
+  }
+
+  async call(input: EntityDetailsInput, context: ToolContext): Promise<ToolOutput<EntityDetailsStructured>> {
+    const allowed = allowedConnectionNames(context);
+    if (allowed && !allowed.has(input.connectionName)) {
+      return {
+        markdown: `Connection "${input.connectionName}" is not available to this ingest stage.`,
+        structured: { resolved: [], missing: [], scanAvailable: false },
+      };
+    }
+
+    const catalog = this.catalogFactory(context);
+    const scanAvailable = await catalog.hasScan(input.connectionName);
+    if (!scanAvailable) {
+      return {
+        markdown: `No live-database scan available for connection "${input.connectionName}"; run \`ktx scan\` first.`,
+        structured: { resolved: [], missing: [], scanAvailable: false },
+      };
+    }
+
+    const parts: string[] = [];
+    const resolved: TableDetail[] = [];
+    const missing: EntityDetailsStructured['missing'] = [];
+
+    for (const target of input.targets) {
+      const resolution =
+        'display' in target
+          ? await catalog.resolveDisplay(input.connectionName, target.display)
+          : { resolved: { catalog: target.catalog, db: target.db, name: target.name }, candidates: [], dialect: '' };
+      if (!resolution.resolved) {
+        missing.push({ target, candidates: resolution.candidates });
+        parts.push(`Not found in scan: ${'display' in target ? target.display : target.name}`);
+        if (resolution.candidates.length > 0) {
+          parts.push(`Closest matches: ${resolution.candidates.map((candidate) => candidate.name).join(', ')}`);
+        }
+        continue;
+      }
+      const detail = await catalog.getTable({ connectionName: input.connectionName, ...resolution.resolved });
+      if (!detail) {
+        missing.push({ target, candidates: resolution.candidates });
+        continue;
+      }
+      resolved.push(detail);
+      appendTableMarkdown(parts, detail, 'column' in target ? target.column : undefined);
+    }
+
+    return {
+      markdown: parts.join('\n').trim(),
+      structured: { resolved, missing, scanAvailable: true },
+    };
+  }
+}