T3 Code — real server MCP response capture
Side: after
Commit: 18928cbf0df71e79a627f8d17e2a3477aad90053
Surface: server HTTP MCP; Linux; two isolated local environments.
Seed: fresh databases, synthetic project and peer-owned thread.
Caller: scripted ACP replay agent running as a real thread on environment A.
Only the machine label is redacted; requests and response messages are unchanged.

Step 1: t3_thread_read
Arguments: {"threadId": "mcp:45fec7d1-ef83-4313-8372-8baf4a189933"}
isError: true
{
  "_tag": "OrchestratorMcpFailure",
  "code": "thread_not_found",
  "message": "Thread mcp:45fec7d1-ef83-4313-8372-8baf4a189933 is no longer available. Thread ids belong to one environment: for a thread on a linked one, find it with `t3_environment_links` and pass its `environmentId` to a tool that takes one."
}

Step 2: t3_environment_links
Arguments: {}
isError: false
{
  "environmentId": "23cd6c78-5b19-4cda-8030-29d4c7d25730",
  "links": [
    {
      "environmentId": "9963a92e-152a-4e4f-8e92-7a5303557b2c",
      "label": "[redacted machine label]",
      "status": "reachable",
      "access": "full-access",
      "expiresAt": "2026-12-15T02:59:03.266Z",
      "lastError": null
    }
  ],
  "notListed": "Not listed: not linked yet. Call t3_environment_link with a hint from the user's words."
}

Step 3: t3_thread_read
Arguments: {"threadId": "mcp:45fec7d1-ef83-4313-8372-8baf4a189933", "environmentId": "9963a92e-152a-4e4f-8e92-7a5303557b2c"}
isError: false
{
  "thread": {
    "threadId": "mcp:45fec7d1-ef83-4313-8372-8baf4a189933",
    "projectId": "c00df01b-addc-4934-be11-cd81951f33ea",
    "title": "Peer-owned thread",
    "link": "[Peer-owned thread](t3-thread://v2/9963a92e-152a-4e4f-8e92-7a5303557b2c/mcp:45fec7d1-ef83-4313-8372-8baf4a189933)",
    "createdBy": "agent",
    "creationSource": "mcp",
    "status": "completed",
    "latestRunId": "run:thread:mcp%3A45fec7d1-ef83-4313-8372-8baf4a189933:ordinal:1",
    "activeRunId": null,
    "providerInstanceId": "proofReplay",
    "model": "proof",
    "runtimeMode": "full-access",
    "interactionMode": "default",
    "linkedPullRequest": null,
    "pullRequests": [],
    "pullRequestCount": 0,
    "openPullRequestCount": 0,
    "titleRegeneration": null,
    "lastTitleRegeneration": null,
    "branch": "master",
    "worktreePath": null,
    "parentThreadId": null,
    "relationshipToParent": null,
    "runCount": 1,
    "itemCount": 4,
    "pendingRequestCount": 0,
    "archived": false,
    "settled": false,
    "settledAt": null,
    "snoozed": false,
    "snoozedUntil": null,
    "blockedOnThreadWait": false,
    "pendingBackgroundTasks": [],
    "createdAt": "2026-11-15T02:58:59.594Z",
    "updatedAt": "2026-11-15T02:59:00.434Z"
  },
  "recentRuns": [
    {
      "runId": "run:thread:mcp%3A45fec7d1-ef83-4313-8372-8baf4a189933:ordinal:1",
      "ordinal": 1,
      "status": "completed",
      "providerInstanceId": "proofReplay",
      "model": "proof",
      "executedModel": null,
      "requestedAt": "2026-11-15T02:58:59.602Z",
      "startedAt": "2026-11-15T02:59:00.085Z",
      "completedAt": "2026-11-15T02:59:00.434Z"
    }
  ],
  "items": [
    {
      "position": 0,
      "visibility": "local",
      "sourceThreadId": "mcp:45fec7d1-ef83-4313-8372-8baf4a189933",
      "itemId": "turn-item:message:mcp%3A45fec7d1-ef83-4313-8372-8baf4a189933",
      "runId": "run:thread:mcp%3A45fec7d1-ef83-4313-8372-8baf4a189933:ordinal:1",
      "messageId": "mcp:45fec7d1-ef83-4313-8372-8baf4a189933",
      "createdBy": "agent",
      "creationSource": "mcp",
      "type": "user_message",
      "status": "completed",
      "title": null,
      "text": "Synthetic peer message",
      "textTruncated": false,
      "nextTextOffset": null,
      "updatedAt": "2026-11-15T02:58:59.602Z"
    },
    {
      "position": 2,
      "visibility": "local",
      "sourceThreadId": "mcp:45fec7d1-ef83-4313-8372-8baf4a189933",
      "itemId": "turn-item:provider:acpRegistry:native-item:provider-instance%3AproofReplay%3Ascripted-replay%3Aturn%3A1%3Aassistant%3A0",
      "runId": "run:thread:mcp%3A45fec7d1-ef83-4313-8372-8baf4a189933:ordinal:1",
      "messageId": "message:provider:acpRegistry:native-item:provider-instance%3AproofReplay%3Ascripted-replay%3Aturn%3A1%3Aassistant%3A0",
      "createdBy": "agent",
      "creationSource": "provider",
      "type": "assistant_message",
      "status": "completed",
      "title": null,
      "text": "Synthetic peer thread ready.",
      "textTruncated": false,
      "nextTextOffset": null,
      "updatedAt": "2026-11-15T02:59:00.332Z"
    }
  ],
  "nextPosition": 2,
  "hasMore": false,
  "earlierPosition": null
}