{"repo":"NousResearch/hermes-agent","public_id":"96817","display_label":"Gateway rejects mismatched session model/provider pairs","summary":"These items address a gateway issue where session.create accepts model and provider combinations that are incompatible, causing sessions to fail on the first message. The work involves adding validation to reject incoherent model×provider pairs at session creation time.","subsystem":null,"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":116344,"merged_at":"2026-09-19T21:32:16+00:00"},"resolution":{"state":"resolved","by":"pr-116344"},"freshness":{"state":"verified","last_verified_at":"2026-09-19T21:32:16+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.6666666666666666},"fix_edges":[{"issue_number":96817,"pr_number":116344,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-19T21:32:16+00:00"}],"members":[{"kind":"issue","number":96817,"title":"fix(gateway): session.create accepts incoherent model×provider pairs, birthing sessions that 400 on message 1","url":null,"state":"closed"},{"kind":"pr","number":96845,"title":"fix(gateway): reject incoherent session model providers","url":null,"state":"closed","close_reason":{"refs":[{"kind":"commit","value":"abc21bb427","number":0},{"kind":"pr","value":"#116344","number":116344}],"category":"implemented_elsewhere","implication":"superseded"},"merged":false},{"kind":"pr","number":116344,"title":"session.create refuses a model its provider cannot serve instead of a dead first turn (#96817, salvage #96845)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["hermes_cli/models_validate.py","tests/tui_gateway/test_session_create_model_provider_guard.py","tui_gateway/methods_session.py","tui_gateway/methods_session_model_guard.py","website/docs/developer-guide/programmatic-integration.md"]}],"trust":{"default_tier":"verified","includes_suggested":false}}