# NousResearch/hermes-agent · Anthropic adapter thinking mode for aliased model names

## Open now

- 1 issue, 1 PR open on GitHub.
- #66244: \[Bug\]: \`_is_claude_model()\` string-substring match fails for aliased model names (e.g. \`"auto"\`), causing adaptive-thinking backends to receive legacy \`thinking.type.enabled\` → 400
- PR #66602: fix(anthropic): default to adaptive thinking for unknown model aliases on third-party endpoints (#66244)

One bug report describes \`_is_claude_model()\` substring matching not recognizing aliased model names such as "auto", which reportedly leads to legacy \`thinking.type.enabled\` being sent to adaptive-thinking backends and a 400 response. Two pull requests propose defaulting aliased or unknown model names to adaptive thinking, referencing #66244; their outcome is not stated in the titles.

## TL;DR

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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #66244: \[Bug\]: \`_is_claude_model()\` string-substring match fails for aliased model names (e.g. \`"auto"\`), causing adaptive-thinking backends to receive legacy \`thinking.type.enabled\` → 400

## Prior & competing PRs

- **#66602: fix(anthropic): default to adaptive thinking for unknown model aliases on third-party endpoints (#66244)**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`
  - files: `agent/anthropic_adapter.py`, `hermes_cli/config.py`, `hermes_cli/env_loader.py`, `tests/hermes_cli/test_env_loader.py`
- **#66719: fix(anthropic-adapter): default aliased model names to adaptive thinking (#66244)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`

## Fix status

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