{"repo":"NousResearch/hermes-agent","public_id":"115483","display_label":"stdio MCP child death causes lifecycle busy-loop","summary":"A bug where a dead stdio child process causes the MCP lifecycle task to spin in a zero-timeout loop, along with multiple fix attempts targeting the spin behavior at and after the proof deadline.","subsystem":null,"counts":{"members":5,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":1,"attempt_prs":3},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":115983},"resolution":{"state":"resolved","by":"pr-115983"},"freshness":{"state":"verified","last_verified_at":"2026-09-19T10:50:21+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.4},"fix_edges":[{"issue_number":115483,"pr_number":115983,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true}],"members":[{"kind":"issue","number":115483,"title":"[Bug]: Dead stdio MCP child causes zero-timeout lifecycle spin and starves gateway after 180s","url":null,"state":"closed"},{"kind":"pr","number":115485,"title":"fix(mcp): reconnect dead stdio child past proof deadline instead of spinning","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#115983","number":115983},{"kind":"pr","value":"#115983","number":115983},{"kind":"pr","value":"#115983","number":115983}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":115513,"title":"fix(mcp): eliminate zero-timeout spin when stdio child dies before proof","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#115485","number":115485},{"kind":"pr","value":"#115983","number":115983},{"kind":"pr","value":"#115983","number":115983}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":115657,"title":"fix(mcp): a dead stdio child no longer busy-loops the lifecycle task","url":null,"state":"closed","close_reason":{"refs":[{"kind":"commit","value":"55b6116b45","number":0},{"kind":"commit","value":"6fc43ca6ed","number":0},{"kind":"pr","value":"#115983","number":115983},{"kind":"pr","value":"#115483","number":115483},{"kind":"pr","value":"#115983","number":115983}],"category":"implemented_elsewhere","implication":"superseded"},"merged":false},{"kind":"pr","number":115983,"title":"fix(mcp): a dead stdio child no longer spins the lifecycle loop after the proof deadline (#115483, salvage #115485)","url":null,"state":"merged","close_reason":{"category":"merged","implication":"superseded"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["tests/tools/test_mcp_stdio_dead_reconnect.py","tools/mcp_tool_server_run.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}