# NousResearch/hermes-agent · x-opencode-session header for backend session affinity

## Open now

- Nothing open on GitHub.

These items address adding the x-opencode-session header to OpenCode requests to enable session affinity, prompted by a bug where omitting it caused model unavailability 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 #101864. Verify it addresses your case.
- **Recommended:** read PR #101864 (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-101864`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #81584: \[Bug\]: OpenCode Go deepseek-v4-flash fails with 400 "Model is unavailable" unless x-opencode-session is sent

## Prior & competing PRs

- **#101864: feat(opencode): every OpenCode request now carries x-opencode-session for backend affinity (#81584)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/auxiliary_client.py`, `agent/chat_completion_helpers.py`, `agent/opencode_affinity.py`, `tests/agent/test_opencode_session_affinity.py`, `website/docs/integrations/providers.md`
- **#81591: fix(opencode-go): send x-opencode-session header for session affinity**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `139396995a`, `#101864`, `#81584`, `#81832`

## Fix status

- Merged to main in PR #101864 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-03`.
- Subsystem: `agent`