# NousResearch/hermes-agent · Gemini tool schema sanitization for Copilot

## Open now

- 1 issue, 1 PR open on GitHub.
- #30676: GitHub Copilot gemini-3.5-flash rejects Hermes tool schemas with integer enums and union type arrays
- PR #32378: fix(schema): sanitize Gemini tool schemas in the chat-completions transport (#30676)

These items concern invalid tool schemas being sent to Gemini models, specifically around integer enums and union type arrays. They cover the bug report and related fixes targeting schema sanitization in Copilot and chat-completions transport.

## 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #30676: GitHub Copilot gemini-3.5-flash rejects Hermes tool schemas with integer enums and union type arrays

## Prior & competing PRs

- **#30697: fix(copilot): sanitize Gemini tool schemas**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#30676`
- **#32378: fix(schema): sanitize Gemini tool schemas in the chat-completions transport (#30676)**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#55643`
  - files: `agent/gemini_schema.py`, `agent/transports/chat_completions.py`, `tests/agent/test_gemini_schema.py`, `tests/agent/transports/test_chat_completions.py`

## Fix status

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