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NousResearch/hermes-agent

MCP Streamable HTTP SSE event size limit (1 MiB)

Cluster 138329 · 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.

The members concern a per-event size cap of 1 MiB on SSE streams in httpx2 2.12.0 that is reported to break MCP servers returning large tools/list responses, surfacing as "SSE stream ended without a response". Two members appear to be fixes proposing to raise or accept larger SSE events in the MCP Streamable HTTP client.

Open issues1

  • Issue#138329httpx2==2.12.0's 1 MiB per-SSE-event cap silently breaks MCP servers with a large tools/list (reported as "SSE stream ended without a response")

Open PRs2

  • PR#138336fix(mcp): raise bounded streamable SSE event limit
  • PR#140910fix(mcp): accept SSE responses over 1 MiB on Streamable HTTP
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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/138329.json
cluster/138329.md