REAL SERVER CAPTURE / HTTP MCP / loopback / fresh synthetic data
Commit: 1a24582c10e5fe22f1c5cc8acb309cfdc71c1ab6
Environment: isolated server; replay provider; no UI or mocked handlers
Thread counts: read-only query of the V2 projection in this isolated database

Threads before invalid call: 0

> t3_thread_launch {"title": "Repro: prompt instead of message", "scratch": true, "prompt": "say hi"}
{
  "code": -32602,
  "message": "Invalid parameters for tool 't3_thread_launch': Unknown argument \"prompt\". Accepted arguments: environmentId, projectId, scratch, title, modelSelection, runtimeMode, interactionMode, workspaceStrategy, message, attachments, clientRequestId, delegatedFrom."
}
Threads after invalid call: 0 (delta 0)

> t3_thread_launch {"title": "Repro: prompt instead of message", "scratch": true, "message": "say hi"}
{
  "threadId": "mcp:25ea20d4-068e-4d25-8a4f-f67b00a02454",
  "runId": "run:thread:mcp%3A25ea20d4-068e-4d25-8a4f-f67b00a02454:ordinal:1",
  "status": "preparing"
}

> t3_thread_read {"threadId": "mcp:25ea20d4-068e-4d25-8a4f-f67b00a02454"}
{
  "thread": {
    "threadId": "mcp:25ea20d4-068e-4d25-8a4f-f67b00a02454",
    "status": "preparing",
    "latestRunId": "run:thread:mcp%3A25ea20d4-068e-4d25-8a4f-f67b00a02454:ordinal:1",
    "activeRunId": "run:thread:mcp%3A25ea20d4-068e-4d25-8a4f-f67b00a02454:ordinal:1",
    "runCount": 1,
    "itemCount": 2
  },
  "recentRuns": [
    {
      "runId": "run:thread:mcp%3A25ea20d4-068e-4d25-8a4f-f67b00a02454:ordinal:1",
      "status": "preparing"
    }
  ],
  "items": [
    {
      "type": "user_message",
      "text": "say hi"
    }
  ]
}

Capture complete. AI-assisted; verified with the tools listed above.