# NousResearch/hermes-agent · MCP lazy import partial binding bug fix

## Open now

- 1 issue, 2 PRs open on GitHub.
- #96528: \[Bug\]: MCP stdio servers fail with NameError: StdioServerParameters not defined (lazy import guard returns True without binding symbol)
- PR #96541: fix(mcp): keep stdio servers available after partial lazy import
- PR #96556: fix(mcp): re-import SDK when symbols are only partially bound

A bug where lazy import guards returned True without fully binding MCP SDK symbols caused NameError failures in stdio servers. These members address detecting and correcting partial symbol binding during MCP imports.

## TL;DR

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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #96528: \[Bug\]: MCP stdio servers fail with NameError: StdioServerParameters not defined (lazy import guard returns True without binding symbol)

## Prior & competing PRs

- **#96541: fix(mcp): keep stdio servers available after partial lazy import**. open
  - maintainer direction: category `silent_close`; implication `active`
  - files: `tests/tools/test_startup_latency_regressions.py`, `tools/mcp_tool.py`
- **#96556: fix(mcp): re-import SDK when symbols are only partially bound**. open
  - maintainer direction: category `silent_close`; implication `active`
  - files: `tests/tools/test_mcp_tool.py`, `tools/mcp_tool.py`

## Fix status

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