{"repo":"NousResearch/hermes-agent","public_id":"96030","display_label":"MCP stdio tool calls leaking unawaited coroutines","summary":"A bug in MCP stdio tool handling causes an unawaited watcher coroutine to be leaked on every tool call, triggering RuntimeWarning. Multiple fix attempts and related cleanup are tracked here.","subsystem":null,"counts":{"members":4,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":1,"attempt_prs":2},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":100920,"merged_at":"2026-09-02T05:11:02+00:00"},"resolution":{"state":"resolved","by":"pr-100920"},"freshness":{"state":"verified","last_verified_at":"2026-09-02T05:11:02+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.5},"fix_edges":[{"issue_number":95938,"pr_number":100920,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-02T05:11:02+00:00"},{"issue_number":96030,"pr_number":100920,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-02T05:11:02+00:00"},{"issue_number":100472,"pr_number":100920,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-02T05:11:02+00:00"}],"members":[{"kind":"issue","number":96030,"title":"[Bug] mcp_tool.py:6139 leaks coroutine via inspect.isawaitable() — RuntimeWarning on every MCP call","url":null,"state":"closed"},{"kind":"pr","number":96251,"title":"fix(mcp): stop leaking an unawaited watcher coroutine per stdio tool call (salvage #96044)","url":null,"state":"closed","close_reason":{"refs":[{"kind":"commit","value":"fe3e5dcb9ef","number":0},{"kind":"pr","value":"#100920","number":100920}],"category":"implemented_elsewhere","implication":"superseded"},"merged":false},{"kind":"pr","number":100110,"title":"fix(mcp): don't instantiate _watch_stdio_children just to probe awaitability","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#96251","number":96251}],"category":"duplicate_of","implication":"duplicate"},"merged":false},{"kind":"pr","number":100920,"title":"fix(mcp): stdio tool calls no longer leak an un-awaited watcher coroutine per call (#95938, salvage #96251)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["tests/tools/test_mcp_stdio_children_dead.py","tools/mcp_tool.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}