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MCP streamable HTTP 401 auth recovery bypass

NousResearch/hermes-agent · cluster 121285 · mcp

Data as of

3 open items. Fix attempted, not merged.

The short answer

1open issue
2open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 0 issues already closed.
Fix event
No fix has been merged to main. see the attempts below.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
1 issue and 2 PRs.

A bug where 401 responses on tools/call requests in MCP streamable HTTP mode are surfaced as generic errors rather than triggering auth recovery, plus two fixes addressing how these 401s are routed through the recovery flow.

Open issues1

  • Issue#121285MCP streamable HTTP: a 401 on tools/call reaches the model as 'MCPError: Server returned an error response'; auth recovery never runs (mcp 2.x)

Open PRs2

  • PR#121303fix(mcp): recover opaque Streamable HTTP tool-call 401s
  • PR#125991fix(tools): route a folded tools/call 401 through MCP auth recovery
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item 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.

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At a glance

Subsystem
mcp
Closed issues
0
Attempts
0 PRs closed without merging

For your agent

The same facts, typed.

cluster/121285.json
cluster/121285.md