diff --git a/dsh-community-market/tests/host-routes.spec.ts b/dsh-community-market/tests/host-routes.spec.ts
new file mode 100644
index 0000000000..e8b2e2ae36
--- /dev/null
+++ b/dsh-community-market/tests/host-routes.spec.ts
@@ -0,0 +1,112 @@
+import { createServer, type IncomingMessage, type Server, type ServerResponse } from 'node:http'
+import type { AddressInfo } from 'node:net'
+import type { Context } from '@deepseek-ai/cordis'
+import type { SettingsScope } from '@deepseek-ai/dsh-settings'
+import { describe, expect, it } from 'vitest'
+import {
+  DSH_1024STORE_ADAPTER_ID,
+  DSH_1024STORE_ENDPOINT,
+  DSH_1024STORE_KEY,
+  DSH_1024STORE_PROVIDER_ID,
+} from '../src/adapters/dsh-1024store.js'
+import type { MarketSettingsDocument } from '../src/catalog/source-store.js'
+import type { LocalSourceRecord } from '../src/contracts/index.js'
+import { marketRoutes, registerMarketRoutes } from '../src/host/routes.js'
+
+type RouteHandler = (req: IncomingMessage, res: ServerResponse) => void | Promise<void>
+
+interface MarketServer {
+  readonly baseUrl: string
+  readonly close: () => Promise<void>
+}
+
+const builtInSource = (overrides: Partial<LocalSourceRecord> = {}): LocalSourceRecord => ({
+  sourceRecordId: '018f1f77-a5c4-7b73-a9ae-0242ac120002',
+  registrationKind: 'built-in',
+  adapterId: DSH_1024STORE_ADAPTER_ID,
+  providerId: DSH_1024STORE_PROVIDER_ID,
+  builtInProviderKey: DSH_1024STORE_KEY,
+  enabled: false,
+  order: 0,
+  ...overrides,
+})
+
+async function startMarketServer(initialSources: readonly LocalSourceRecord[]): Promise<MarketServer> {
+  const routes = new Map<string, RouteHandler>()
+  let document: MarketSettingsDocument = { sources: initialSources }
+  const scope = {
+    get: () => document,
+    update: async (patch: object) => {
+      document = { ...document, ...patch as Partial<MarketSettingsDocument> }
+    },
+  } as unknown as SettingsScope<MarketSettingsDocument>
+  const ctx = {
+    webServer: {
+      register: (route: { readonly path: string; readonly handler: RouteHandler }) => {
+        routes.set(route.path, route.handler)
+        return () => { routes.delete(route.path) }
+      },
+    },
+  } as unknown as Context
+  const disposeRoutes = registerMarketRoutes(ctx, scope)
+  const server = createServer((req, res) => {
+    const pathname = new URL(req.url ?? '/', 'http://localhost').pathname
+    const handler = routes.get(pathname)
+    if (handler === undefined) {
+      res.statusCode = 404
+      res.end()
+      return
+    }
+    void Promise.resolve(handler(req, res)).catch((cause: unknown) => {
+      res.statusCode = 500
+      res.end(cause instanceof Error ? cause.message : String(cause))
+    })
+  })
+  await new Promise<void>((resolve, reject) => {
+    server.once('error', reject)
+    server.listen(0, '127.0.0.1', resolve)
+  })
+  const { port } = server.address() as AddressInfo
+  return {
+    baseUrl: `http://127.0.0.1:${String(port)}`,
+    close: async () => {
+      disposeRoutes()
+      await closeServer(server)
+    },
+  }
+}
+
+async function closeServer(server: Server): Promise<void> {
+  await new Promise<void>((resolve, reject) => {
+    server.close(error => { if (error === undefined) resolve(); else reject(error) })
+  })
+}
+
+describe('community market Host routes', () => {
+  it('returns settings-backed source state with built-in provider metadata', async () => {
+    const server = await startMarketServer([builtInSource()])
+    try {
+      const response = await fetch(`${server.baseUrl}${marketRoutes.state}`)
+
+      expect(response.status).toBe(200)
+      expect(response.headers.get('cache-control')).toBe('no-store')
+      expect(response.headers.get('x-content-type-options')).toBe('nosniff')
+      await expect(response.json()).resolves.toMatchObject({
+        sources: [{
+          sourceRecordId: builtInSource().sourceRecordId,
+          name: 'DSH 1024Store',
+          endpoint: DSH_1024STORE_ENDPOINT,
+          partnership: true,
+          enabled: false,
+        }],
+        builtIns: [{
+          key: DSH_1024STORE_KEY,
+          providerId: DSH_1024STORE_PROVIDER_ID,
+          partnership: true,
+        }],
+      })
+    } finally {
+      await server.close()
+    }
+  })
+})