# NousResearch/hermes-agent · MCP OAuth shim consuming SSE responses causing hangs

## Open now

- Nothing open on GitHub.

A bug where the MCP OAuth metadata compatibility shim incorrectly consumed SSE resource responses, blocking tool discovery. Multiple fixes and a report describe the same deadlock issue.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #117592. Verify it addresses your case.
- **Recommended:** read PR #117592 (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-117592`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #117414: MCP OAuth metadata compatibility shim consumes session-long SSE resource responses and deadlocks tool discovery

## Prior & competing PRs

- **#117592: fix(mcp): OAuth metadata shim no longer consumes MCP SSE responses, tools/list no longer hangs (#117414, salvage #117416)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `contributors/emails/[redacted:email]`, `tests/tools/test_mcp_oauth_issuer_origin.py`, `tools/mcp_oauth_provider.py`
- **#117416: fix(mcp-oauth): avoid consuming MCP resource SSE as OAuth metadata**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `af995a30aad7`, `#117592`

## Fix status

- Merged to main in PR #117592 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-21`.