# NousResearch/hermes-agent · Atomic checkpoint metadata writes to prevent corruption

## Open now

- 1 issue, 1 PR open on GitHub.
- #98832: \[P1\] Checkpoint project metadata not written atomically — silent /rollback loss
- PR #98839: fix(checkpoint): write project metadata atomically via temp+rename

These items address a bug where project metadata was not written atomically during checkpointing, risking silent data loss or corrupt JSON if a crash occurred mid-write. The proposed fix uses a temp-file-then-rename/replace approach to make writes atomic.

## 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #98832: \[P1\] Checkpoint project metadata not written atomically — silent /rollback loss

## Prior & competing PRs

- **#98839: fix(checkpoint): write project metadata atomically via temp+rename**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`
  - files: `tools/checkpoint_manager.py`
- **#99109: fix(checkpoint): write project metadata atomically via temp+replace to prevent corrupt JSON on crash**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#98839`

## Fix status

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