{"repo":"NousResearch/hermes-agent","public_id":"79536","display_label":"Provider not persisted when switching models in sessions","summary":"These issues and PRs concern a bug where the provider field is not saved to model_config during a model switch, causing sessions that use cross-provider fallback to fail on resume. Fixes target both the persistence function and session resume logic.","subsystem":null,"counts":{"members":5,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":2,"attempt_prs":2},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":85261},"resolution":{"state":"resolved","by":"pr-85261"},"freshness":{"state":"verified","last_verified_at":"2026-08-14T09:09:09+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.4},"fix_edges":[{"issue_number":79536,"pr_number":85261,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true},{"issue_number":79536,"pr_number":85977,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true}],"members":[{"kind":"issue","number":79536,"title":"bug(persistence): update_session_model() doesn't persist provider in model_config → cross-provider fallback sessions 404 on resume","url":null,"state":"closed"},{"kind":"pr","number":79604,"title":"fix(session): persist provider on model switch and use it on resume","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#85977","number":85977},{"kind":"pr","value":"#85721","number":85721}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":79811,"title":"fix(persistence): persist provider in model_config on model switch (#79536)","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#79604","number":79604},{"kind":"pr","value":"#79604","number":79604}],"category":"implemented_elsewhere","implication":"superseded"},"merged":false},{"kind":"pr","number":85261,"title":"fix: restore session model on resume instead of falling back to config default","url":null,"state":"merged","close_reason":{"category":"merged","implication":"superseded"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["cli.py","hermes_cli/cli_agent_setup_mixin.py","hermes_cli/cli_commands_mixin.py","hermes_state.py","tests/cli/test_resume_model_restore.py"]},{"kind":"pr","number":85977,"title":"fix: persist provider on model switch and add billing_provider fallback","url":null,"state":"merged","close_reason":{"category":"merged","implication":"superseded"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["gateway/slash_commands.py","hermes_state.py","tests/cli/test_resume_model_restore.py","tui_gateway/server.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}