# NousResearch/hermes-agent · Fix title generation failures on strict/reasoning models

## Open now

- Nothing open on GitHub.

These issues and fixes address auxiliary title generation breaking on DeepSeek and reasoning models due to unsupported structured output formats, HTTP 400 errors, and truncated or malformed responses. The work improves fallback handling and ensures titles are correctly derived from reasoning content.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 2 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.50`: 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

- #83390: Auxiliary title_generation fails on DeepSeek: HTTP 400 "This response_format type is unavailable now"

## Prior & competing PRs

- **#113960: fix(aux): session auto-titles land from reasoning_content and never store truncated JSON fragments (#82291, #83903, salvage #96122 #83985 #85424)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/title_generator.py`, `tests/agent/test_title_generator.py`
- **#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`
- **#85424: fix(agent): make title generation work for reasoning models and strict local providers**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `eff18764ff1`, `#113960`

## 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`