# NousResearch/hermes-agent · 5xx errors skip credential pool rotation bug

## Open now

- 1 issue, 1 PR open on GitHub.
- #121841: \[Bug\]: Credential pool never rotates keys on 5xx (500/502/503/529) — healthy pool keys skipped, straight to cross-provider fallback
- PR #121848: fix(agent): use healthy pool keys before cross-provider fallback on 5xx

A bug where 5xx HTTP errors bypass credential pool key rotation and jump directly to cross-provider fallback. The members include a bug report and associated fix attempts addressing this rotation logic.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 1 open PR(s), 0 merged PR(s), 1 PR(s) closed without merging.
- No fix has been merged to main; one or more PRs were attempted (see below).
- **Recommended:** review the prior/competing PR(s) below. A fix was attempted but not merged; your case may extend or revive that work.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Open related issues

- #121841: \[Bug\]: Credential pool never rotates keys on 5xx (500/502/503/529) — healthy pool keys skipped, straight to cross-provider fallback

## Prior & competing PRs

- **#121848: fix(agent): use healthy pool keys before cross-provider fallback on 5xx**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`
  - files: `agent/agent_runtime_helpers.py`, `agent/credential_pool.py`, `tests/agent/test_credential_pool_routing.py`
- **#122542: fix(agent): rotate credential pool on 5xx before cross-provider fallback**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `0045f02373519dda0df165dd2d31493002615b6d`, `#121841`

## Fix status

- No merged fix on record.
- Subsystem: `agent`