{"repo":"NousResearch/hermes-agent","public_id":"100472","display_label":"MCP stdio tool calls leak un-awaited coroutine","summary":"A bug causes an un-awaited watcher coroutine to be leaked on every MCP stdio tool call, producing RuntimeWarnings. Multiple fixes target this coroutine leak in the stdio fast-fail gate.","subsystem":"mcp","counts":{"members":4,"open_issues":0,"open_issues_distinct":0,"open_prs":1,"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":100472,"title":"MCP stdio tool calls leak an un-awaited coroutine (RuntimeWarning on every call)","url":null,"state":"closed"},{"kind":"pr","number":100476,"title":"fix(mcp): close leaked coroutine in stdio fast-fail gate","url":null,"state":"closed","close_reason":{"category":"silent_close","implication":"active"},"merged":false},{"kind":"pr","number":100478,"title":"fix(mcp): close leaked coroutine in stdio fast-fail gate (Closes #100472)","url":null,"state":"open","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}}