# NousResearch/hermes-agent · Detect and reject out-of-band state.db replacement

## Open now

- Nothing open on GitHub.

These items address a bug where replacing state.db while a process is running causes silent degraded behavior instead of a loud failure. The work involves adding file-identity checks and refusing repair operations when a replacement is detected.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 2 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #99652. Verify it addresses your case.
- **Recommended:** read PR #99652 (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-99753`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.40`: 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

- #89332: \[Bug\]: No file-identity guard on state.db — gateway limps through a total persistence outage when its DB is replaced out-of-band instead of failing loudly

## Prior & competing PRs

- **#99652: fix(state): structurally corrupt state.db no longer keeps accepting writes (#97940, salvage #96038)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `contributors/emails/[redacted:email]`, `gateway/session.py`, `hermes_state.py`, `tests/gateway/test_session.py`, `tests/state/test_fts_runtime_rebuild.py`
- **#99753: fix(state): a state.db swapped under a live process halts writes instead of corrupting (#89332, salvage #89364)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `agent/turn_finalizer.py`, `gateway/session.py`, `hermes_state.py`, `run_agent.py`, `tests/agent/test_codex_app_server_persist.py`, `tests/gateway/test_session_db_replaced_fallback.py`, `tests/hermes_state/test_state_db_file_identity.py`, `tests/run_agent/test_turn_completion_explainer.py`
- **#89360: fix(state): refuse in-file repair when state.db was replaced**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#99753`, `#89364`, `#89332`, `#89364`
- **#89364: fix(state): fail loudly when state.db is replaced under a live process**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `18ac3c4fb6`, `#99753`, `#99652`, `#98077`

## Fix status

- Merged to main in PR #99652 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-31`.
- Subsystem: `agent`