# NousResearch/hermes-agent · snake_case vs camelCase readOnlyHint MCP trust bug

## Open now

- Nothing open on GitHub.

A bug caused the MCP trust gate to miss read-only tools because it checked a camelCase attribute while the SDK used snake_case. Corrections address reading the proper snake_case \`read_only_hint\` attribute.

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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #88858: \[Bug\]: MCP trust gate: readOnlyHint never detected on live-discovered tools (camelCase attr vs snake_case in the SDK) — trust: untrusted gates every read-only tool

## Prior & competing PRs

- **#88972: fix(mcp): read snake_case read_only_hint on SDK annotation objects**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#88372`
- **#89103: fix(tools): check read_only_hint in snake_case for MCP trust gate (#88858)**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#88972`

## Fix status

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