Cairn
NousResearch/hermes-agent

Handling empty assistant messages and tool edge cases

Cluster 66429 · agent. Data as of

1 open item. Fix merged in #88324 on 17 Aug 2026. Check it covers your case.

The short answer

1open issue
0open PRs
5items grouped
Known?
Yes. 5 related items grouped here, 0 issues already closed.
Fix event
A fix was merged to main in PR #88324. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
1 issue and 0 PRs.

These issues and PRs address problems with empty assistant messages being sent to the API and related edge cases involving tool call IDs and orphaned tool response loops in agent runs.

Open issues1

  • Issue#66429[Bug]: Hermes empty assistant messages

Open PRs0

No open pull requests.

Fixes on record

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

  • #73071 refactor: single owner for empty-content wire repair (salvages #71439)

    merged to main

    files: agent/agent_runtime_helpers.py, agent/chat_completion_helpers.py, agent/conversation_loop.py, agent/error_classifier.py, contributors/emails/[redacted:email], tests/agent/test_error_classifier.py, tests/run_agent/test_message_sequence_repair.py, tests/run_agent/test_partial_stream_finish_reason.py, tests/run_agent/test_run_agent.py, tests/run_agent/test_streaming.py

  • #88324 fix(agent): keep tool results when a server reuses one tool_call_id (#70724)

    merged to main

    files: agent/agent_runtime_helpers.py, tests/run_agent/test_message_sequence_repair.py

2 PRs closed without merging

From the close comments: done elsewhere 2

  • #66434 fix: filter empty assistant messages before sending to API (#66429) · done elsewhere → 725c7ba, #73071, #66429
  • #70734 fix(agent): keep tool results when a server reuses one tool_call_id · done elsewhere → df68cc1, #88324
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 0.40: 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
agent
Merged PRs
#73071, #88324
Closed issues
0
Attempts
2 PRs closed without merging
Fix link checked
17 Aug 2026

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The same facts, typed.

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