Cairn
NousResearch/hermes-agent

MCP tool schema field access and caching fixes

Cluster 94970. Data as of

Nothing open on GitHub. Fix attempted, not merged.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
No fix has been merged to main. 2 PRs closed without merging; see the attempts below.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
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.

Open issues0

No open issues.

Open PRs0

No open pull requests.

2 PRs closed without merging

From the close comments: PR volume cleanup 1 · duplicate 1

  • #94972 fix(mcp): use mcp_field() for inputSchema and readOnlyHint reads (#94970) · duplicate → #88372, #94970
  • #102450 fix(mcp): preserve snake-case tool metadata in cache · PR volume cleanup
Closed issues · 1
  • Closed#94970MCP tool schemas are cached empty on mcp 2.x — two getattr call sites bypass mcp_field()
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item 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.

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At a glance

Closed issues
1
Attempts
2 PRs closed without merging

For your agent

The same facts, typed.

cluster/94970.json
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