{"repo":"NousResearch/hermes-agent","public_id":"25123","display_label":"Gemini thinking_config malformed request causing 400 errors","summary":"Multiple issues and fixes related to incorrectly structured or inappropriately injected thinking_config in Gemini API requests, resulting in 400 Bad Request errors. Specific cases include double-nesting in extra_body, injection for unsupported models like Gemma and gemini-3-flash-preview, and OpenAI-compat path mismatches.","subsystem":"agent","counts":{"members":4,"open_issues":1,"open_issues_distinct":1,"open_prs":1,"closed_issues":1,"merged_prs":0,"attempt_prs":2},"landed_fix":null,"resolution":{"state":"unresolved","by":null},"freshness":{"state":"never_verified","last_verified_at":null,"is_stale":false},"grouping":{"backbone":"STRUCTURAL_PARTIAL","link_density":0.3933333333333333},"fix_edges":[],"members":[{"kind":"issue","number":25123,"title":"fix: Fallback to gemini-3-flash-preview fails with 400 (thinking_config)","url":null,"state":"open"},{"kind":"issue","number":26161,"title":"[Bug]: Gemini API Failed with 400 Bad Request","url":null,"state":"closed"},{"kind":"pr","number":25124,"title":"fix: exclude gemini-3-flash-preview from thinking_config injection","url":null,"state":"open","close_reason":{"refs":[{"kind":"pr","value":"#25123","number":25123}],"category":"wontfix_bydesign","implication":"wontfix"},"merged":false},{"kind":"pr","number":32353,"title":"fix(agent): exclude gemini-3-flash-preview from thinkingLevel injection (#25123)","url":null,"state":"closed","close_reason":{"category":"implemented_elsewhere","implication":"superseded"},"merged":false}],"trust":{"default_tier":"verified","includes_suggested":false}}