diff --git a/packages/context/src/project/driver-schemas.test.ts b/packages/context/src/project/driver-schemas.test.ts
index 731d4342..9792aab4 100644
--- a/packages/context/src/project/driver-schemas.test.ts
+++ b/packages/context/src/project/driver-schemas.test.ts
@@ -87,3 +87,54 @@ describe('connectionConfigSchema - context source drivers with mappings', () =>
     ).toThrow();
   });
 });
+
+describe('connectionConfigSchema - notion / dbt / metricflow', () => {
+  it('parses a notion connection with selected_roots crawl', () => {
+    const parsed = connectionConfigSchema.parse({
+      driver: 'notion',
+      auth_token_ref: 'env:NOTION_TOKEN',
+      crawl_mode: 'selected_roots',
+      root_page_ids: ['abc', 'def'],
+      max_pages_per_run: 500,
+    });
+    expect(parsed).toMatchObject({
+      driver: 'notion',
+      crawl_mode: 'selected_roots',
+      root_page_ids: ['abc', 'def'],
+      max_pages_per_run: 500,
+    });
+  });
+
+  it('rejects notion with unknown crawl_mode', () => {
+    expect(() =>
+      connectionConfigSchema.parse({
+        driver: 'notion',
+        auth_token_ref: 'env:NOTION_TOKEN',
+        crawl_mode: 'everything',
+      }),
+    ).toThrow();
+  });
+
+  it('parses a dbt connection from a local source_dir', () => {
+    const parsed = connectionConfigSchema.parse({
+      driver: 'dbt',
+      source_dir: '/tmp/dbt-project',
+      target: 'dev',
+    });
+    expect(parsed).toMatchObject({ driver: 'dbt', source_dir: '/tmp/dbt-project', target: 'dev' });
+  });
+
+  it('parses a metricflow connection with nested config', () => {
+    const parsed = connectionConfigSchema.parse({
+      driver: 'metricflow',
+      metricflow: {
+        repoUrl: 'https://github.com/acme/sl.git',
+        branch: 'main',
+      },
+    });
+    expect(parsed).toMatchObject({
+      driver: 'metricflow',
+      metricflow: { repoUrl: 'https://github.com/acme/sl.git' },
+    });
+  });
+});
diff --git a/packages/context/src/project/driver-schemas.ts b/packages/context/src/project/driver-schemas.ts
index 5ec2afe4..1815975d 100644
--- a/packages/context/src/project/driver-schemas.ts
+++ b/packages/context/src/project/driver-schemas.ts
@@ -116,11 +116,90 @@ const lookmlConnectionSchema = z
   })
   .describe('LookML context-source connection.');
 
+const notionConnectionSchema = z
+  .looseObject({
+    driver: z.literal('notion'),
+    auth_token: z.string().min(1).optional().describe('Literal Notion integration token. Prefer auth_token_ref.'),
+    auth_token_ref: z
+      .string()
+      .min(1)
+      .optional()
+      .describe('Reference to Notion integration token (e.g. env:NOTION_TOKEN).'),
+    crawl_mode: z
+      .enum(['selected_roots', 'all_accessible'])
+      .optional()
+      .describe(
+        'Crawl scope. "selected_roots" requires at least one of root_page_ids, root_database_ids, root_data_source_ids.',
+      ),
+    root_page_ids: z.array(z.string().min(1)).optional().describe('Notion page IDs to crawl when crawl_mode is selected_roots.'),
+    root_database_ids: z
+      .array(z.string().min(1))
+      .optional()
+      .describe('Notion database IDs to crawl when crawl_mode is selected_roots.'),
+    root_data_source_ids: z
+      .array(z.string().min(1))
+      .optional()
+      .describe('Notion data source IDs to crawl when crawl_mode is selected_roots.'),
+    max_pages_per_run: z
+      .number()
+      .int()
+      .min(1)
+      .max(10000)
+      .optional()
+      .describe('Maximum Notion pages fetched in a single ingest run.'),
+    max_knowledge_creates_per_run: z
+      .number()
+      .int()
+      .min(0)
+      .max(25)
+      .optional()
+      .describe('Maximum new wiki pages created per run.'),
+    max_knowledge_updates_per_run: z
+      .number()
+      .int()
+      .min(0)
+      .max(100)
+      .optional()
+      .describe('Maximum existing wiki pages updated per run.'),
+  })
+  .describe('Notion context-source connection.');
+
+const dbtConnectionSchema = z
+  .looseObject({
+    driver: z.literal('dbt'),
+    source_dir: z.string().min(1).optional().describe('Absolute or project-relative path to a local dbt project.'),
+    repo_url: z.string().min(1).optional().describe('Git URL of the dbt project (https, ssh, or file:).'),
+    branch: z.string().min(1).optional().describe('Git branch when using repo_url.'),
+    path: z.string().optional().describe('Subdirectory within the repo when the dbt project lives in a monorepo.'),
+    auth_token_ref: z.string().min(1).optional().describe('Reference to Git auth token for private repos.'),
+    profiles_path: z.string().optional().describe('Override path to dbt profiles.yml.'),
+    target: z.string().min(1).optional().describe('dbt target name (e.g. dev, prod).'),
+    project_name: z.string().min(1).optional().describe('Override auto-detected dbt project name.'),
+  })
+  .describe('dbt context-source connection.');
+
+const metricflowConnectionSchema = z
+  .looseObject({
+    driver: z.literal('metricflow'),
+    metricflow: z
+      .looseObject({
+        repoUrl: z.string().min(1).describe('Git URL of the MetricFlow / SL project.'),
+        branch: z.string().min(1).optional().describe('Git branch (default "main").'),
+        path: z.string().optional().describe('Subdirectory within the repo when the SL config lives in a monorepo.'),
+        auth_token_ref: z.string().min(1).optional().describe('Reference to Git auth token for private repos.'),
+      })
+      .describe('Nested MetricFlow configuration block.'),
+  })
+  .describe('MetricFlow / SL context-source connection.');
+
 export const connectionConfigSchema = z.discriminatedUnion('driver', [
   ...warehouseConnectionSchemas,
   metabaseConnectionSchema,
   lookerConnectionSchema,
   lookmlConnectionSchema,
+  notionConnectionSchema,
+  dbtConnectionSchema,
+  metricflowConnectionSchema,
 ]);
 
 export type KtxConnectionConfig = z.infer<typeof connectionConfigSchema>;