diff --git a/packages/llm/llm-deepseek-api-key/src/index.ts b/packages/llm/llm-deepseek-api-key/src/index.ts
index bd19dd559c..662500a256 100644
--- a/packages/llm/llm-deepseek-api-key/src/index.ts
+++ b/packages/llm/llm-deepseek-api-key/src/index.ts
@@ -90,7 +90,15 @@ export function apply(ctx: Context, config: Config): void {
     },
     connect: async (signal) => {
       const connection = options()
-      return connectionOf(connection, connection.listing === undefined ? undefined : await listings.view(connection.listing, signal))
+      if (connection.listing === undefined) return connectionOf(connection, undefined)
+      let view: ListingView
+      try { view = await listings.view(connection.listing, signal) }
+      catch (error) {
+        if (signal?.aborted === true) throw error
+        // A credential lookup failure is reported by `resolveAuth` on the model request, after the turn records the prompt.
+        view = listings.current()
+      }
+      return connectionOf(connection, view)
     },
     resolveAuth: async connection => ({ headers: { 'x-api-key': await resolveApiKey(connection) } }),
     admit: (connection, model) => { refuseListedModel(model, connection.refusals.get(model)) },
diff --git a/packages/llm/llm-deepseek-api-key/tests/listing.spec.ts b/packages/llm/llm-deepseek-api-key/tests/listing.spec.ts
index 9bfd1bf07c..fb6364e9dd 100644
--- a/packages/llm/llm-deepseek-api-key/tests/listing.spec.ts
+++ b/packages/llm/llm-deepseek-api-key/tests/listing.spec.ts
@@ -100,6 +100,21 @@ it('refuses listed models this build cannot serve before any inference request',
   expect(requests).toHaveLength(1)
 })
 
+it('lets a caller abandon the first listing wait', async () => {
+  const started = Promise.withResolvers<undefined>()
+  vi.spyOn(globalThis, 'fetch').mockImplementation((_input, init) => new Promise((_resolve, reject) => {
+    started.resolve(undefined)
+    init?.signal?.addEventListener('abort', () => { reject(init.signal?.reason) }, { once: true })
+  }))
+  const { ctx } = await host()
+  await ctx.plugin(ApiKey, {})
+  const caller = new AbortController()
+  const pending = ctx.llm.resolveModelInfo('deepseek-official', 'deepseek-flash', caller.signal)
+  await started.promise
+  caller.abort(new Error('caller left'))
+  await expect(pending).rejects.toThrow('caller left')
+})
+
 it.each([[{}], [{ models: [{ id: 'custom' }] }]])('hides the route without a key and requests nothing for %j', async (config) => {
   const requests = officialListing(listing(FLASH))
   const { ctx } = await host('')
diff --git a/packages/llm/llm-deepseek/tests/official-route-turn.spec.ts b/packages/llm/llm-deepseek/tests/official-route-turn.spec.ts
new file mode 100644
index 0000000000..054a44ec78
--- /dev/null
+++ b/packages/llm/llm-deepseek/tests/official-route-turn.spec.ts
@@ -0,0 +1,42 @@
+/** Turns on the official endpoint report credential failures on the model request, after the prompt is recorded. */
+import { afterEach, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import LlmRuntime, { createUserMessage } from '@deepseek-ai/dsh-llm'
+import AgentRegistry from '@deepseek-ai/dsh-agent'
+import AgentLoop from '@deepseek-ai/dsh-agent-loop'
+import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
+import SessionProjectionRegistry from '@deepseek-ai/dsh-session-projection'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRuntime from '@deepseek-ai/dsh-tools'
+import * as NativeToolExecutor from '@deepseek-ai/dsh-tool-executor-native'
+import * as DeepSeek from '@deepseek-ai/dsh-llm-deepseek-api-key'
+
+const contexts: Context[] = []
+afterEach(async () => {
+  for (const ctx of contexts.splice(0)) await ctx.fiber.dispose()
+  vi.restoreAllMocks()
+  vi.unstubAllEnvs()
+})
+
+it('records the prompt and fails the request when the official endpoint has a malformed key', async () => {
+  vi.stubEnv('DEEPSEEK_API_KEY', 'invalid\nheader')
+  const fetch = vi.spyOn(globalThis, 'fetch')
+  const ctx = new Context()
+  contexts.push(ctx)
+  for (const plugin of [
+    LlmRuntime, SessionStore, SessionProjectionRegistry, SystemPrompt, ToolRuntime, NativeToolExecutor, AgentRegistry,
+  ]) {
+    await ctx.plugin(plugin)
+  }
+  await ctx.plugin(AgentLoop, { agents: [] })
+  await ctx.plugin(DeepSeek, {})
+  const agent = await ctx.agentLoop.create(SessionId('malformed-official-key'), { provider: 'deepseek-official', model: 'deepseek-flash' })
+  agent.followup(createUserMessage({ content: [{ type: 'text', text: 'hello' }], source: { kind: 'user' } }))
+  await agent.whenIdle()
+  const events = agent.session.snapshotEvents()
+  expect(events.map(event => event.type)).toContain('user/message')
+  expect(events.find(event => event.type === 'assistant/attempt')?.data).toMatchObject({
+    stream: [{ chunk: { type: 'finish', reason: { kind: 'error', failure: { code: 'INVALID_CREDENTIAL' } } } }],
+  })
+  expect(fetch).not.toHaveBeenCalled()
+})