Cairn
NousResearch/hermes-agent

Context compression skips empty windows, fixes edge cases

Cluster 59496 · agent. Data as of

Nothing open on GitHub. Fix merged in #70251. Check it covers your case.

The short answer

0open issues
0open PRs
5items grouped
Known?
Yes. 5 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #70251. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
Nothing open on GitHub.

These issues and fixes address bugs where context compression was incorrectly triggered on empty message windows, particularly after summary boundary adjustments, and includes a related fix to count no-op compressions toward the anti-thrashing guard.

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.

  • #70251 fix(compression): skip empty post-handoff summary windows (salvage #59526)

    merged to main

    files: agent/context_compressor.py, contributors/emails/[redacted:email], tests/agent/test_context_compressor_summary_continuity.py

3 PRs closed without merging

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

  • #59526 fix(compression): skip empty post-handoff summary windows · merged via another change → #70251, #59737
  • #59737 fix(agent): skip compression when latest summary leaves no messages to summarize · done elsewhere → #70251, #59526
  • #60579 fix(compression): skip empty summary windows · duplicate → #59526, #59496
Closed issues · 1
  • Closed#59496[Bug]: Context compression calls context engine with empty window after summary boundary adjustment
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 0.40: 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

Subsystem
agent
Merged PRs
#70251
Closed issues
1
Attempts
3 PRs closed without merging
Fix link checked
23 Jul 2026

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