# NousResearch/hermes-agent · Photon sidecar reliability, retries, and error handling

## Open now

- Nothing open on GitHub.

These items address failure handling in the Photon sidecar, including retry behavior, crash recovery, upstream overflow tolerance, and surfacing specific delivery failure classes instead of generic 500 errors.

## 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 #73563. Verify it addresses your case.
- **Recommended:** read PR #73563 (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-73563`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #50971: Photon sidecar hides delivery failure classes behind generic 500s

## Prior & competing PRs

- **#73563: fix(photon): sidecar lifecycle cluster — crash recovery, event-loop, structured errors (salvage x7)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `contributors/emails/[redacted:email]`, `gateway/run.py`, `plugins/platforms/photon/adapter.py`, `plugins/platforms/photon/sidecar/index.mjs`, `tests/gateway/test_multiplex_adapter_registry.py`, `tests/plugins/platforms/photon/test_fatal_notify_self_cancel.py`, `tests/plugins/platforms/photon/test_overflow_recovery.py`, `tests/plugins/platforms/photon/test_sidecar_lifecycle.py`, `tests/plugins/platforms/photon/test_spectrum_patch.py`
- **#51193: fix(photon): preserve sidecar delivery retryability**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#73563`, `#50971`

## Fix status

- Merged to main in PR #73563 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-07-29`.
- Subsystem: `agent`