BASE | commit d3ef7e8e527ce2076ee858fc4c5360955da54b8a
Real T3 dev server; fresh database; Replay multi-turn; CLI uses MCP t3_thread_send

$ git init -q --initial-branch=main


[exit 0]

$ git add .


[exit 0]

$ git -c user.name=Scenario -c user.email=scenario@example.invalid commit -qm Initial commit


[exit 0]

$ t3 project add <demo> --title Missing workspace demonstration

Added project 84176dc4-8020-4846-a814-49900dc26737 (Missing workspace demonstration) at <demo>.
[exit 0]

$ t3 thread start <demo> Start --title Missing workspace demonstration --provider devReplay --model multi-turn --worktree main --branch t3/repro-c --wait --json

{"threadId":"mcp:a26dec09-c821-4658-b3f1-2379eccf9814","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:1","status":"completed","reply":"first fixture turn complete","error":null}
[exit 0]

$ t3 thread show mcp:a26dec09-c821-4658-b3f1-2379eccf9814 --json

{"thread":{"threadId":"mcp:a26dec09-c821-4658-b3f1-2379eccf9814","projectId":"84176dc4-8020-4846-a814-49900dc26737","title":"Missing workspace demonstration","link":"https://app.t3.codes/threads/2e112caa-a6c9-4aab-8cd9-c35d777f7330/mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814","createdBy":"agent","creationSource":"mcp","status":"completed","latestRunId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:1","activeRunId":null,"providerInstanceId":"devReplay","model":"multi-turn","runtimeMode":"full-access","interactionMode":"default","linkedPullRequest":null,"pullRequests":[],"pullRequestCount":0,"openPullRequestCount":0,"titleRegeneration":null,"lastTitleRegeneration":null,"branch":"t3/repro-c","worktreePath":"<app-home>/worktrees/demo/t3-repro-c-d80b411f582f60fc","parentThreadId":null,"relationshipToParent":null,"runCount":1,"itemCount":4,"pendingRequestCount":0,"archived":false,"settled":false,"settledAt":null,"snoozed":false,"snoozedUntil":null,"blockedOnThreadWait":false,"pendingBackgroundTasks":[],"createdAt":"2026-11-13T17:47:01.802Z","updatedAt":"2026-11-13T17:47:03.995Z"},"messages":[{"role":"user","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:1","text":"Start"},{"role":"assistant","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:1","text":"first fixture turn complete"}]}
[exit 0]

$ git worktree remove --force <app-home>/worktrees/demo/t3-repro-c-d80b411f582f60fc


[exit 0]

$ git checkout t3/repro-c

Switched to branch 't3/repro-c'
[exit 0]

Precondition: missing worktree folder = True; branch t3/repro-c is checked out in the main project folder.

$ t3 thread send mcp:a26dec09-c821-4658-b3f1-2379eccf9814 Reply with the single word ok. --json

{"threadId":"mcp:a26dec09-c821-4658-b3f1-2379eccf9814","link":"https://app.t3.codes/threads/2e112caa-a6c9-4aab-8cd9-c35d777f7330/mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814","messageId":"message:mcp:client%3A1f61aee4-b516-4e00-8915-346b5cdcf46f:thread-send:49fecd8c-668c-4615-89d0-9e6493134df1","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:2","status":"starting","delivery":"started"}
[exit 0]

$ t3 thread show mcp:a26dec09-c821-4658-b3f1-2379eccf9814 --json

{"thread":{"threadId":"mcp:a26dec09-c821-4658-b3f1-2379eccf9814","projectId":"84176dc4-8020-4846-a814-49900dc26737","title":"Missing workspace demonstration","link":"https://app.t3.codes/threads/2e112caa-a6c9-4aab-8cd9-c35d777f7330/mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814","createdBy":"agent","creationSource":"mcp","status":"failed","latestRunId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:2","activeRunId":null,"providerInstanceId":"devReplay","model":"multi-turn","runtimeMode":"full-access","interactionMode":"default","linkedPullRequest":null,"pullRequests":[],"pullRequestCount":0,"openPullRequestCount":0,"titleRegeneration":null,"lastTitleRegeneration":null,"branch":"t3/repro-c","worktreePath":"<app-home>/worktrees/demo/t3-repro-c-d80b411f582f60fc","parentThreadId":null,"relationshipToParent":null,"runCount":2,"itemCount":6,"pendingRequestCount":0,"archived":false,"settled":false,"settledAt":null,"snoozed":false,"snoozedUntil":null,"blockedOnThreadWait":false,"pendingBackgroundTasks":[],"createdAt":"2026-11-13T17:47:01.802Z","updatedAt":"2026-11-13T17:47:11.918Z"},"messages":[{"role":"user","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:1","text":"Start"},{"role":"assistant","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:1","text":"first fixture turn complete"},{"role":"user","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:2","text":"Reply with the single word ok."}]}
[exit 0]

Read-only runs projection after send (selected fields):
[
  {
    "ordinal": 1,
    "status": "completed",
    "requestedAt": "2026-11-13T17:47:01.860Z",
    "startedAt": "2026-11-13T17:47:03.467Z",
    "completedAt": "2026-11-13T17:47:03.995Z"
  },
  {
    "ordinal": 2,
    "status": "failed",
    "requestedAt": "2026-11-13T17:47:09.068Z",
    "startedAt": null,
    "completedAt": "2026-11-13T17:47:11.918Z"
  }
]

Recorded send response, exit 0:
{"threadId":"mcp:a26dec09-c821-4658-b3f1-2379eccf9814","link":"https://app.t3.codes/threads/2e112caa-a6c9-4aab-8cd9-c35d777f7330/mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814","messageId":"message:mcp:client%3A1f61aee4-b516-4e00-8915-346b5cdcf46f:thread-send:49fecd8c-668c-4615-89d0-9e6493134df1","runId":"run:thread:mcp%3Aa26dec09-c821-4658-b3f1-2379eccf9814:ordinal:2","status":"starting","delivery":"started"}

Runs after send: [
  {
    "ordinal": 1,
    "status": "completed",
    "requestedAt": "2026-11-13T17:47:01.860Z",
    "startedAt": "2026-11-13T17:47:03.467Z",
    "completedAt": "2026-11-13T17:47:03.995Z"
  },
  {
    "ordinal": 2,
    "status": "failed",
    "requestedAt": "2026-11-13T17:47:09.068Z",
    "startedAt": null,
    "completedAt": "2026-11-13T17:47:11.918Z"
  }
]