# NousResearch/hermes-agent · MCP server name collision with built-in toolsets

## Open now

- Nothing open on GitHub.

These issues and PRs concern a naming conflict where an MCP server name can match a native/static toolset name, causing silent or unexpected behavior. The work involves detecting collisions, warning users, and potentially merging tools rather than silently dropping them.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #103943. Verify it addresses your case.
- **Recommended:** read PR #103943 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.50`: 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

- #30563: MCP server name can silently collide with a native toolset; native wins with no warning

## Prior & competing PRs

- **#103943: MCP servers named like a built-in toolset no longer vanish from the model (salvage #19793)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/test_toolsets.py`, `tests/tools/test_mcp_dynamic_discovery.py`, `toolsets.py`, `website/docs/reference/toolsets-reference.md`
- **#19793: fix(toolsets): merge MCP tools when alias collides with static toolset**. closed without merge
  - maintainer direction: category `stale_abandoned`; implication `active`
- **#31788: fix(mcp): warn when an MCP server name collides with a built-in toolset**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `245e48008f`, `#103943`, `#19793`

## Fix status

- Merged to main in PR #103943 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-06`.
- Subsystem: `mcp`