# NousResearch/hermes-agent · ACP empty history and message edge case fixes

## Open now

- 0 issues, 1 PR open on GitHub.
- PR #10882: fix(acp): persist explicit empty history resets

These issues and fixes address cases where empty message lists or explicit history resets were not being correctly passed through to ACP clients and sessions. The work focuses on ensuring empty or cleared state is preserved rather than ignored or overwritten.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 1 open PR(s), 1 merged PR(s), 0 PR(s) closed without merging.
- A fix was merged to main in PR #109109. Verify it addresses your case.
- **Recommended:** read PR #109109 (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-109109`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #10844: ACP sessions keep stale history when run_conversation returns messages=\[\]

## Prior & competing PRs

- **#109109: fix(acp): empty-string tool results and messages=\[\] reach ACP clients unchanged (#10845, #10844, salvage #10868)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `acp_adapter/events.py`, `acp_adapter/server.py`, `tests/acp/test_events.py`, `tests/acp/test_server.py`
- **#10882: fix(acp): persist explicit empty history resets**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`
  - files: `acp_adapter/server.py`, `tests/acp/test_server.py`

## Fix status

- Merged to main in PR #109109 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-12`.
- Subsystem: `acp`