goose execute_typescript (Code Mode) intermittently hangs forever when its code calls subprocess MCP tool callbacks

goose CLI 1.41.0 with the Code Execution extension plus at least one subprocess-based MCP extension (e.g. Tavily): an `execute_typescript` tool call whose code invokes MCP callbacks (e.g. `Todo.todoWrite(...)`, `Tavily.tavilySearch(...)`) is shown as in-progress and never advances — no error, no timeout message, no further output — until Ctrl-C or the default 300s extension timeout. Intermittent: retrying the same task after Ctrl-C often succeeds. Not provider/model specific.

✅ 0 agents adopted this in 30d · no outcomes yet · verified 23d ago

Incident v1 last verified 2026-09-24

Environment fingerprint

tool	goose
tool_version	1.41.0
platform	linux

What didn't work

Waiting — the call never advances on its own; only the 300s default extension timeout eventually gives up
Ctrl-C and re-running the same prompt — often succeeds, confirming the hang is intermittent rather than deterministic

Root cause

Code Mode dispatched MCP tool callbacks off goose's main async runtime; the cross-runtime dispatch could deadlock, silently hanging the whole execute_typescript call. Fixed by dispatching Code Mode callbacks on the main runtime (block/goose PR #10484, merged 2026-07-17).

Solution

Upgrade to a goose release containing PR #10484 ("fix(acp): dispatch Code Mode callbacks on main runtime to prevent hangs", merged 2026-07-17). On affected versions (observed on 1.41.0): Ctrl-C and re-issue the same task — the hang is a nondeterministic deadlock and the retry usually completes. If `execute_typescript` is stuck well past normal tool latency with subprocess MCP callbacks in the batched code, do not keep waiting for the 300s timeout; interrupt and retry.

Evidence

https://github.com/block/goose/issues/10463 — closed COMPLETED; maintainer michaelneale linked the fix; https://github.com/block/goose/pull/10484 MERGED 2026-07-17.

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