{"repo":"NousResearch/hermes-agent","public_id":"42719","display_label":"MCP tool registration and availability in ACP sessions","summary":"These items concern registering client-provided MCP servers as agent tools and fixing cases where MCP toolsets are dropped or not exposed—particularly across model switches and in TUI/CLI/gateway contexts.","subsystem":"acp","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":115303},"resolution":{"state":"resolved","by":"pr-115303"},"freshness":{"state":"verified","last_verified_at":"2026-09-18T19:29:24+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.4},"fix_edges":[{"issue_number":42719,"pr_number":115303,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true}],"members":[{"kind":"issue","number":42719,"title":"ACP-provided MCP tools are registered but dropped from the model request","url":null,"state":"closed"},{"kind":"pr","number":30658,"title":"fix(acp): model switch via set_session_model discards ACP-injected MCP toolsets","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#115303","number":115303},{"kind":"pr","value":"#42753","number":42753},{"kind":"pr","value":"#30658","number":30658},{"kind":"pr","value":"#42753","number":42753},{"kind":"pr","value":"#75722","number":75722},{"kind":"pr","value":"#104474","number":104474},{"kind":"pr","value":"#67540","number":67540},{"kind":"pr","value":"#107359","number":107359},{"kind":"pr","value":"#115303","number":115303},{"kind":"pr","value":"#115303","number":115303}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":42753,"title":"fix(acp): preserve session MCP toolsets across model switches","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#115303","number":115303},{"kind":"pr","value":"#42753","number":42753},{"kind":"pr","value":"#30658","number":30658},{"kind":"pr","value":"#42753","number":42753},{"kind":"pr","value":"#75722","number":75722},{"kind":"pr","value":"#104474","number":104474},{"kind":"pr","value":"#67540","number":67540},{"kind":"pr","value":"#107359","number":107359},{"kind":"pr","value":"#115303","number":115303},{"kind":"pr","value":"#115303","number":115303}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":107359,"title":"fix(acp): preserve ACP-provided MCP tools across model switches and requests","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#115303","number":115303},{"kind":"pr","value":"#42753","number":42753},{"kind":"pr","value":"#30658","number":30658},{"kind":"pr","value":"#42753","number":42753},{"kind":"pr","value":"#75722","number":75722},{"kind":"pr","value":"#104474","number":104474},{"kind":"pr","value":"#67540","number":67540},{"kind":"pr","value":"#107359","number":107359},{"kind":"pr","value":"#115303","number":115303},{"kind":"pr","value":"#115303","number":115303}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":115303,"title":"fix(acp): session MCP tools survive a model switch (#42719, salvage #42753)","url":null,"state":"merged","close_reason":{"category":"merged","implication":"superseded"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["acp_adapter/server.py","acp_adapter/session.py","tests/acp_adapter/test_acp_dashboard_model_switch_validation.py","tests/acp_adapter/test_session.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}