NousResearch/hermes-agent

Stale tool-call marker corrupts subsequent responses

Cluster 78148. Data as of

Nothing open on GitHub. Fix merged in #78222 on 4 Aug 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 #78222. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #78222. That is separate from the fix event.
Still open
Nothing open on GitHub.

These items concern a bug where a bare tool-call marker (e.g. '[memory]') is left in place after context compaction or a tool loop, causing it to persist as a response template and corrupt all following replies. The fix involves discarding this marker before fallback or persistence steps.

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.

  • #78222 fix(agent): discard bare tool-call marker before fallback/persistence (#78148)

    merged to main

    files: agent/conversation_loop.py, hermes_cli/main.py, hermes_cli/sessions_cmd.py, hermes_state.py, tests/run_agent/test_conversation_fallback_state.py, tests/test_stale_tool_call_marker_session_repair.py

1 PR closed without merging

From the close comments: merged via another change 1

  • #78175 fix(agent): discard bare tool-call marker before fallback/persistence (#78148) · merged via another change → #78222
Closed issues · 1
  • Closed#78148Context compaction after tool loop leaves stale '[memory]' as response template — all subsequent replies return '[memory]'
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

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At a glance

Merged PRs
#78222
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
4 Aug 2026

For your agent

The same facts, typed.