{"repo":"NousResearch/hermes-agent","public_id":"74101","display_label":"Empty tool_calls array causes HTTP 400 errors","summary":"These items address a bug where sanitization or deduplication logic leaves behind an empty tool_calls array, triggering HTTP 400 errors from the API. Fixes target multiple points in the message sanitization pipeline where the empty key can be reintroduced.","subsystem":"agent","counts":{"members":3,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":1,"attempt_prs":1},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":86654,"merged_at":"2026-08-15T04:25:48+00:00"},"resolution":{"state":"unresolved","by":null},"freshness":{"state":"verified","last_verified_at":"2026-08-15T04:25:48+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.6666666666666666},"fix_edges":[{"issue_number":64335,"pr_number":86654,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-08-15T04:25:48+00:00"},{"issue_number":74101,"pr_number":86654,"tier":"verified","basis":"superseded_ref","confidence":0.9,"recoverable_from_timeline":false,"pr_merged_at":"2026-08-15T04:25:48+00:00"},{"issue_number":77921,"pr_number":86654,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-08-15T04:25:48+00:00"},{"issue_number":83312,"pr_number":86654,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-08-15T04:25:48+00:00"}],"members":[{"kind":"issue","number":74101,"title":"sanitize_api_messages dedup re-introduces tool_calls: [] after empty-array sanitizer (DeepSeek HTTP 400)","url":null,"state":"closed"},{"kind":"pr","number":77377,"title":"fix(sanitize): drop tool_calls key when dedup removes all calls (fixes empty-array 400 class)","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#86654","number":86654}],"category":"implemented_elsewhere","implication":"superseded"},"merged":false},{"kind":"pr","number":86654,"title":"fix(agent): close the empty tool_calls 400 class at all three chokepoints (#83312, #77921)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["agent/agent_runtime_helpers.py","agent/transports/chat_completions.py","tests/agent/transports/test_chat_completions_empty_tool_calls.py","tests/run_agent/test_message_sequence_repair.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}