# NousResearch/hermes-agent · MCP retry loop and circuit breaker handling

## Open now

- Nothing open on GitHub.

These members concern an infinite retry loop triggered when an MCP tool returns an error, and related fixes introducing a circuit breaker to prevent retry burn loops while preserving tool responses.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 2 merged PR(s), 0 PR(s) closed without merging.
- A fix was merged to main in PR #109180. Verify it addresses your case.
- **Recommended:** read PR #109180 (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: `resolved` · deciding PR(s): `pr-10776`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Closed / duplicate issues

- #10447: Gateway hangs when Google Workspace MCP skill returns error — infinite retry loop

## Prior & competing PRs

- **#10776: fix: add circuit breaker to MCP tool handler to prevent retry burn loops**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tools/mcp_tool.py`
- **#109180: fix(mcp): recovered retry keeps the tool's real answer, breaker strike intact (salvage #106753)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `contributors/emails/[redacted:email]`, `tests/tools/test_mcp_tool_session_expired.py`, `tools/mcp_tool_handlers.py`

## Fix status

- Merged to main in PR #109180 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-12`.