# NousResearch/hermes-agent · Gemini corrupted thought signature image processing bug

## Open now

- 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.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #111559. Verify it addresses your case.
- **Recommended:** read PR #111559 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-111559`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member 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.

## Closed / duplicate issues

- #111311: \[Bug\]: Gemini 3.8 flash can't process images because of corrupted thought signature

## Prior & competing PRs

- **#111559: fix(agent): Gemini via OpenRouter no longer 400s on an empty thought signature sidecar (#111311, salvage #111314)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/transports/chat_completions.py`, `tests/agent/test_provider_parity.py`
- **#111314: fix(agent): skip corrupted Gemini thought signatures**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#111559`

## Fix status

- Merged to main in PR #111559 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-15`.