Cairn
NousResearch/hermes-agent

CORS headers missing on SSE stream endpoints

Cluster 72892 · gateway. Data as of

Nothing open on GitHub. Fix merged in #121745 on 25 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #121745. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #121745. That is separate from the fix event.
Still open
Nothing open on GitHub.

These members address missing CORS headers on server-sent event (SSE) stream responses in the API server, specifically affecting session chat stream endpoints. The work involves identifying the root cause and applying fixes to ensure CORS headers are consistently included on SSE responses.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #121745 fix(api-server): CORS on every SSE stream, flush run-events head, report failed tools as tool.failed

    merged to main

    files: contributors/emails/[email protected], gateway/platforms/api_server.py, gateway/platforms/api_server_openai_routes.py, gateway/platforms/api_server_runs.py, tests/gateway/test_api_server.py, tests/gateway/test_api_server_runs.py, tests/gateway/test_session_api.py, website/docs/user-guide/features/api-server.md

1 PR closed without merging

From the close comments: done elsewhere 1

  • #72945 fix(api-server): resolve CORS headers on session chat stream SSE response (#72892) · done elsewhere → 346c14a, #121745, #72892
Closed issues · 1
  • Closed#72892[Bug]: POST /api/sessions/{id}/chat/stream missing CORS headers — same root cause as #6358, different call site
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
gateway
Merged PRs
#121745
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
25 Sep 2026

For your agent

The same facts, typed.

cluster/72892.json
cluster/72892.md