# NousResearch/hermes-agent · Fix MCP toolset name validation in CLI startup

## Open now

- 1 issue, 2 PRs open on GitHub.
- #78102: \[Bug\]: Startup warns "Unknown toolsets: mcp-<server>" for valid MCP toolset names
- PR #44044: fix(cli): accept configured MCP prefixed toolsets before discovery
- PR #78158: fix(cli): recognize mcp-<server> prefixed toolset names in startup validation (#78102)

A bug caused the CLI to emit warnings about unknown toolsets when MCP server names used the 'mcp-<server>' prefix format. The fix updates startup validation to recognize this prefixed naming convention.

## TL;DR

- 7 member(s): 1 open issue(s), 0 closed issue(s), 2 open PR(s), 2 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #127978. Verify it addresses your case.
- **Recommended:** read PR #127978 (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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.29`: 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

- #78102: \[Bug\]: Startup warns "Unknown toolsets: mcp-<server>" for valid MCP toolset names

## Prior & competing PRs

- **#127782: hermes config check reports stale toolset names and disabled platforms the way the runtime sees them (salvage #127392)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `hermes_cli/config.py`, `hermes_cli/config_check_diagnostics.py`, `hermes_cli/toolset_validation.py`, `tests/hermes_cli/test_config_check_diagnostics.py`, `website/docs/user-guide/configuration.md`
- **#127978: Config migrate and check accept mcp-<server> names for configured MCP servers (salvage #106715)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `contributors/emails/a692570@users.noreply.github.com`, `hermes_cli/toolset_validation.py`, `tests/hermes_cli/test_config_check_diagnostics.py`
- **#44044: fix(cli): accept configured MCP prefixed toolsets before discovery**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#78102`, `#94151`, `#35618`
  - files: `cli.py`, `hermes_cli/mcp_toolsets.py`, `hermes_cli/oneshot.py`, `tests/cli/test_mcp_toolset_validation.py`, `tests/hermes_cli/test_tui_resume_flow.py`, `tests/test_tui_gateway_server.py`, `tui_gateway/server.py`
- **#78149: fix(cli): recognize prefixed MCP toolsets**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#78158`
- **#78158: fix(cli): recognize mcp-<server> prefixed toolset names in startup validation (#78102)**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`
  - files: `cli.py`
- **#106715: fix(config): make platform_toolsets validation MCP-aware (#78102)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `4a1bd4a36f`, `16c59d0e78`, `#127978`, `#127782`

## Fix status

- Merged to main in PR #127978 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-10-03`.
- Subsystem: `hermes_cli`