# NousResearch/hermes-agent · Enum-style reasoning_effort 400 error matching fixes

## Open now

- Nothing open on GitHub.

These items address cases where enum-style or structured reasoning_effort values trigger 400 errors that are not correctly matched by the existing rejection/retry logic. Fixes span agent, auxiliary, and commandcode relay contexts.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #115736. Verify it addresses your case.
- **Recommended:** read PR #115736 (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-115736`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #115277: \[Bug\]: commandcode relay's "Invalid option: expected one of ..." 400 for reasoning_effort "none" is not matched by the reasoning-rejection retry ladder

## Prior & competing PRs

- **#115736: fix(agent): enum-style and structured reasoning_effort 400s recover instead of failing or compressing (#115277, #100536, salvage #115281)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/chat_completion_helpers.py`, `agent/error_classifier.py`, `agent/turn_recovery.py`, `tests/agent/test_auxiliary_parameter_rung_chaining.py`, `tests/agent/test_error_classifier.py`, `tests/agent/test_reasoning_disable_recovery.py`
- **#115281: fix(agent): match enum-style reasoning_effort rejections with no unsupported marker**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `4749025d03f2`, `#115736`, `#115277`, `#100536`, `#115281`
- **#115308: fix(auxiliary): match enum-style reasoning_effort 400 as a field rejection**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`

## Fix status

- Merged to main in PR #115736 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-19`.
- Subsystem: `agent`