# NousResearch/hermes-agent · Context compression aborts on empty summarizer response

## Open now

- Nothing open on GitHub.

A bug where context compression silently drops the middle portion of a session when the summarizer returns empty content. Related fixes change the behavior to abort compression instead of discarding that window of context.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 3 PR(s) closed without merging.
- A fix was merged to main in PR #94606. Verify it addresses your case.
- **Recommended:** read PR #94606 (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-94606`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.40`: 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

- #94448: \[Bug\] Context compression silently deletes the middle of a session when the summarizer returns empty content (server default abort_on_summary_failure=false)

## Prior & competing PRs

- **#94606: fix(compressor): abort compression on empty-content provider degradation (#94448) — salvage of #94531**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/context_compressor.py`, `agent/conversation_compression.py`, `contributors/emails/[redacted:email]`, `tests/agent/test_context_compressor.py`
- **#94459: fix(compression): abort instead of dropping context on empty summarizer content**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#7264`
- **#94473: fix(compression): abort on empty-content summarizer response instead of dropping the middle window**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#94459`, `#94448`
- **#94531: fix(compressor): abort compression on empty-content provider degradation to prevent context loss (#94448)**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#94606`

## Fix status

- Merged to main in PR #94606 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-26`.