NousResearch/hermes-agent

Gemini corrupted thought signature image processing bug

Cluster 111311. Data as of

Nothing open on GitHub. Fix merged in #111559 on 15 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 #111559. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #111559. That is separate from the fix event.
Still open
Nothing open on GitHub.

A bug where corrupted or empty Gemini thought signatures cause request failures, along with related fix attempts targeting the agent layer to skip or handle such signatures.

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.

  • #111559 fix(agent): Gemini via OpenRouter no longer 400s on an empty thought signature sidecar (#111311, salvage #111314)

    merged to main

    files: agent/transports/chat_completions.py, tests/agent/test_provider_parity.py

1 PR closed without merging

From the close comments: done elsewhere 1

  • #111314 fix(agent): skip corrupted Gemini thought signatures · done elsewhere → #111559
Closed issues · 1
  • Closed#111311[Bug]: Gemini 3.8 flash can't process images because of corrupted thought signature
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

Pick up a Lab task

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At a glance

Merged PRs
#111559
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
15 Sep 2026

For your agent

The same facts, typed.