# NousResearch/hermes-agent · Inter-process locking for skill usage telemetry

## Open now

- Nothing open on GitHub.

These issues and PRs address a race condition in skill_usage._mutate() where concurrent processes can corrupt telemetry data during read-modify-write operations. The work involves adding inter-process locking to protect usage telemetry updates.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #21262. Verify it addresses your case.
- **Recommended:** read PR #21262 (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-21262`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.50`: 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

- #18795: \[Bug\]: skill_usage._mutate() has read-modify-write race across concurrent processes

## Prior & competing PRs

- **#20671: fix(skills): inter-process lock for skill_usage._mutate (#18795)**. closed without merge · fix tier `suggested`
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `d12be46df8753931c21946fc0b0caccb83ff2209`, `#19262`
  - _suggested-tier fix detail withheld; re-request with `?tier=all` to include it._
- **#21262: fix(skills): lock usage telemetry updates (salvage #19262)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/tools/test_skill_usage.py`, `tools/skill_usage.py`
- **#19262: fix(skills): lock usage telemetry updates**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#18795`

## Fix status

- Merged to main in PR #21262 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-05-07`.
- Subsystem: `skills`