# NousResearch/hermes-agent · Encrypted reasoning replay 400 errors now recover gracefully

## Open now

- Nothing open on GitHub.

These issues and fixes address non-retryable 400 errors that occur when encrypted reasoning content is replayed to a caller it wasn't issued to, causing session failures. The work focuses on recovery behavior so these errors no longer brick or poison ongoing sessions.

## 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 #111437. Verify it addresses your case.
- **Recommended:** read PR #111437 (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: `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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Closed / duplicate issues

- #109572: \[Bug\]: Non-retryable 400 bricks Desktop session when replayed reasoning encrypted_content was not issued to this caller (opencode-free / muse-spark-1.3-contributor-free)

## Prior & competing PRs

- **#111437: fix(agent): opencode-zen encrypted-reasoning and NVIDIA NIM tool-content 400s now recover instead of poisoning the session (#111309, #111231, salvage #111312 #111236)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/error_classifier.py`, `tests/agent/test_error_classifier.py`, `tests/agent/test_multimodal_tool_content_recovery.py`
- **#109578: fix(chat): recover a caller-bound encrypted reasoning replay rejection**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `4782fb4a98d6ec56b9eb6bbd757e2a2d45b8ee66`, `#111437`, `#109572`

## Fix status

- Merged to main in PR #111437 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-15`.