# NousResearch/hermes-agent · Retry 400 errors from provider-injected parameters

## Open now

- Nothing open on GitHub.

These issues and PRs address a bug where provider-injected parameter 400 errors (such as prompt_cache_retention in Codex OAuth) cause the turn to abort rather than being retried by the classifier.

## 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 #91643. Verify it addresses your case.
- **Recommended:** read PR #91643 (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-91643`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #90257: Codex OAuth: provider-injected prompt_cache_retention 400 aborts the turn instead of retrying

## Prior & competing PRs

- **#91643: fix(classifier): retry provider-injected parameter 400s instead of aborting the turn**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/error_classifier.py`, `tests/agent/test_error_classifier.py`
- **#90261: fix(classifier): retry provider-injected parameter 400s instead of aborting the turn**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#91643`

## Fix status

- Merged to main in PR #91643 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-21`.
- Subsystem: `agent`