# NousResearch/hermes-agent · Linear webhook signature validation and authentication

## Open now

- Nothing open on GitHub.

These members address adding and fixing HMAC-based signature validation for Linear webhook deliveries, including custom logic for verifying the linear-signature header.

## 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 #87355. Verify it addresses your case.
- **Recommended:** read PR #87355 (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-87355`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #87348: \[Bug\]: Linear Webhook Signing Secret Custom Logic

## Prior & competing PRs

- **#87355: fix(webhook): authenticate Linear deliveries via linear-signature HMAC**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `gateway/platforms/webhook.py`, `tests/gateway/test_webhook_adapter.py`
- **#87361: feat(gateway): Add Linear webhook signature validation**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#87355`

## Fix status

- Merged to main in PR #87355 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-16`.