NousResearch/hermes-agent

Fix list-shaped reasoning_content breaking streaming chat

Cluster 104711. Data as of 2026-10-24 04:06 UTC

Nothing open on GitHub. Fix merged in #104994 on 7 Sep 2026. Check it covers your case.

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Known?: Yes. 4 related items grouped here, 1 issue already closed.
Fix event: A fix was merged to main in PR #104994. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this resolved, deciding PR #104994. That is separate from the fix event.
Still open: Nothing open on GitHub.

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These issues and fixes address a crash where list-shaped reasoning_content caused an AttributeError during streaming, because the code incorrectly called .startswith() on a list. The fixes flatten the reasoning_content before the boundary check.

Open issues0

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Fixes on record

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

#104994 fix: structured reasoning no longer breaks chat consumers (#104711)

merged to main

files: agent/agent_runtime_helpers.py, agent/auxiliary_client.py, agent/reasoning_summaries.py, contributors/emails/[redacted:email], contributors/emails/[redacted:email], evals/providers/reasoning_shapes.py, tests/agent/test_reasoning_shape_boundaries.py, website/docs/developer-guide/provider-runtime.md

2 PRs closed without merging

From the close comments: done elsewhere 1 · merged via another change 1

#104717 fix(agent): flatten list-shaped reasoning_content before boundary check (#104711) · done elsewhere → 37fb7ad, #104711, #104994, #85791, #104848
#104848 fix(agent): flatten list-shaped reasoning_content before startswith · merged via another change → 37fb7ad, #104711, #104994, #85791, #104717

Closed issues · 1

Closed#104711Streaming crash: list-shaped reasoning_content raises 'list' object has no attribute 'startswith'

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At a glance

Merged PRs: #104994
Closed issues: 1
Attempts: 2 PRs closed without merging
Fix link checked: 7 Sep 2026

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