NousResearch/hermes-agent

HTTP 422 errors from multimodal content in tool messages

Cluster 104731. Data as of 2026-10-24 04:06 UTC

Nothing open on GitHub. Fix merged in #106466 on 9 Sep 2026. Check it covers your case.

open issues

open PRs

items grouped

Known?: Yes. 4 related items grouped here, 1 issue already closed.
Fix event: A fix was merged to main in PR #106466. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this resolved, deciding PR #106466. That is separate from the fix event.
Still open: Nothing open on GitHub.

Next step: read #106466, then check it covers your case.

Read #106466 Pick up a Lab task

These issues and PRs concern a bug where image or multimodal content embedded in tool messages causes HTTP 422 errors from the OpenCode Go relay, and proposed fixes to validate or veto such content before it reaches the upstream.

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.

#106466 OpenCode Go screenshots no longer kill the session on HTTP 422 (#104731, #89057, salvage #104734 #47026)

merged to main

files: agent/error_classifier.py, contributors/emails/[redacted:email], plugins/model-providers/opencode-zen/__init__.py, tests/plugins/model_providers/test_opencode_go_profile.py, tests/run_agent/test_multimodal_tool_content_recovery.py

2 PRs closed without merging

From the close comments: merged via another change 2

#104734 fix(providers,agent): handle strict-string tool message validation and 422 on opencode-go (#104731) · merged via another change → fd6434b, #106466
#104736 fix(providers): veto multimodal tool-result content for opencode-go (Console Go 422) · merged via another change → fd6434b, #106466, #47026, #104734

Closed issues · 1

Closed#104731[Bug]: HTTP 422 from Console Go relay: vision_analyze embeds image parts in tool messages the upstream rejects (messages.N.tool.content.str)

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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 0.50: 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

Merged PRs: #106466
Closed issues: 1
Attempts: 2 PRs closed without merging
Fix link checked: 9 Sep 2026

For your agent

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cluster/104731.json
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