NousResearch/hermes-agent

Fallback ignores API mode, causes 500 errors

Cluster 102148. Data as of

Nothing open on GitHub. Fix merged in #113442 on 16 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #113442. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #113442. That is separate from the fix event.
Still open
Nothing open on GitHub.

A bug where fallback activation ignores the opencode_model_api_mode setting, routing Responses-only models through the wrong endpoint and producing deterministic 500 errors. The accompanying fixes attempt to honor that setting during fallback selection.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #113442 fix(fallback): OpenCode fallback entries land on the model's wire — Muse Spark no longer 500s on /chat/completions (#102148, salvage #102229)

    merged to main

    files: agent/chat_completion_helpers.py, tests/agent/test_fallback_api_mode_preservation.py

1 PR closed without merging

From the close comments: merged via another change 1

  • #102229 fix(agent): honor opencode_model_api_mode in fallback activation (fixes #102148) · merged via another change → 6eef5ea, #113442
Closed issues · 1
  • Closed#102148[Bug] Fallback activation ignores opencode_model_api_mode — Responses-only models (muse-spark) on opencode-go sent via /chat/completions → deterministic 500
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

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At a glance

Merged PRs
#113442
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
16 Sep 2026

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