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NousResearch/hermes-agent

Handling provider rejection of structured output format

Cluster 88830 · agent. Data as of

Nothing open on GitHub. Fix merged in #113966 on 17 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 #113966. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #113966. That is separate from the fix event.
Still open
Nothing open on GitHub.

These items concern cases where certain providers (notably DeepSeek) return HTTP 400 errors when response_format with json_schema is requested. The work involves detecting that rejection and retrying or falling back without the unsupported format parameter.

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.

  • #113966 fix(aux): structured-output 400s no longer kill fallback candidates or cost a doomed first request on DeepSeek (#83390, #105191, salvage #92908)

    merged to main

    files: agent/auxiliary_client.py, agent/auxiliary_structured_output.py, plugins/model-providers/deepseek/__init__.py, providers/base.py, tests/agent/conftest.py, tests/agent/test_auxiliary_structured_output.py, website/docs/developer-guide/model-provider-plugin.md

1 PR closed without merging

From the close comments: duplicate 1

  • #88834 fix(titles): retry without response_format when the provider rejects it · duplicate → #82890, #88830
Closed issues · 1
  • Closed#88830Auxiliary title generation fails with HTTP 400 on DeepSeek: response_format json_schema unsupported
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

Subsystem
agent
Merged PRs
#113966
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
17 Sep 2026

For your agent

The same facts, typed.

cluster/88830.json
cluster/88830.md