# NousResearch/hermes-agent · Env var expansion in gateway model defaults

## Open now

- 1 issue, 2 PRs open on GitHub.
- #71710: \[Bug\]: \`${VAR}\` env var references in \`model.default\` not resolved by gateway (Telegram/Discord/etc.)
- PR #71722: fix(gateway): expand ${VAR} env refs in _resolve_gateway_model (#71710)
- PR #71976: fix(gateway): expand env vars in _resolve_gateway_model (#71710)

A bug was identified where ${VAR} environment variable references in model.default were not being processed by the gateway. Related changes address expanding these env var references in the _resolve_gateway_model function.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 2 open PR(s), 0 merged PR(s), 0 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #71710: \[Bug\]: \`${VAR}\` env var references in \`model.default\` not resolved by gateway (Telegram/Discord/etc.)

## Prior & competing PRs

- **#71722: fix(gateway): expand ${VAR} env refs in _resolve_gateway_model (#71710)**. open
  - maintainer direction: category `partial_fix`; implication `needs_llm`; refs `a14f3271120f`, `#71710`, `#71722`, `#71976`, `#374151`
  - files: `gateway/run.py`, `tests/test_empty_model_fallback.py`
- **#71976: fix(gateway): expand env vars in _resolve_gateway_model (#71710)**. open
  - maintainer direction: category `partial_fix`; implication `needs_llm`; refs `e2e19f0a1032`, `#71710`, `#71722`, `#71976`, `#374151`
  - files: `gateway/run.py`

## Fix status

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