# NousResearch/hermes-agent · Handling provider rejection of structured output format

## Open now

- 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.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #113966. Verify it addresses your case.
- **Recommended:** read PR #113966 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-113966`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member 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.

## Closed / duplicate issues

- #88830: Auxiliary title generation fails with HTTP 400 on DeepSeek: response_format json_schema unsupported

## Prior & competing PRs

- **#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 · fix tier `verified`
  - maintainer direction: category `merged`
  - 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`
- **#88834: fix(titles): retry without response_format when the provider rejects it**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#82890`, `#88830`

## Fix status

- Merged to main in PR #113966 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-17`.
- Subsystem: `agent`