# NousResearch/hermes-agent · MCP tool schema field access and caching fixes

## Open now

- Nothing open on GitHub.

These items address bugs where MCP tool schemas were cached as empty and tool metadata fields were not read correctly, related to how mcp_field() is called and how snake-case keys are preserved in the cache.

## TL;DR

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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

## Closed / duplicate issues

- #94970: MCP tool schemas are cached empty on mcp 2.x — two getattr call sites bypass mcp_field()

## Prior & competing PRs

- **#94972: fix(mcp): use mcp_field() for inputSchema and readOnlyHint reads (#94970)**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#88372`, `#94970`
- **#102450: fix(mcp): preserve snake-case tool metadata in cache**. closed without merge
  - maintainer direction: category `volume_quota`; implication `active`

## Fix status

- No merged fix on record.