# NousResearch/hermes-agent · MCP reconnect causes stale registry state

## Open now

- 1 issue, 1 PR open on GitHub.
- #126978: \[Bug\]: MCP reconnect without parking re-discovers tools but keeps the stale registry (removed tools stay, new tools/schema changes ignored)
- PR #127124: fix(mcp): resync registry on reconnect without parking

A bug where reconnecting to MCP without parking fails to properly resync the tool registry, leaving removed tools present and ignoring new tools or schema changes. Two fix attempts address this resync behavior.

## TL;DR

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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #126978: \[Bug\]: MCP reconnect without parking re-discovers tools but keeps the stale registry (removed tools stay, new tools/schema changes ignored)

## Prior & competing PRs

- **#127004: fix(mcp): resync registry on reconnect without parking**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#127124`
- **#127124: fix(mcp): resync registry on reconnect without parking**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#127004`
  - files: `tests/tools/test_mcp_dynamic_discovery.py`, `tools/mcp_tool_health.py`, `tools/mcp_tool_transport.py`

## Fix status

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