# NousResearch/hermes-agent · ACP session construction moved off event loop

## Open now

- 1 issue, 0 PRs open on GitHub.
- #78205: \[Bug\]: ACP session construction runs on the event loop, so a slow agent boot presents as a dead connection (not a slow one)

A bug caused ACP session construction to block the event loop, making slow agent boot appear as a dead connection rather than a slow one. Fixes apply async single-flight and address a Windows-specific hang in session/new during agent boot.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #115684. Verify it addresses your case.
- **Recommended:** read PR #115684 (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: `unresolved`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Open related issues

- #78205: \[Bug\]: ACP session construction runs on the event loop, so a slow agent boot presents as a dead connection (not a slow one)

## Prior & competing PRs

- **#115684: fix(acp): session/new no longer hangs during agent boot on Windows (#58083, redo of #85001 + #91775)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `acp_adapter/entry.py`, `acp_adapter/server.py`, `acp_adapter/session.py`, `plugins/memory/__init__.py`, `tests/acp_adapter/test_session_construction_off_loop.py`
- **#85001: fix(acp): build sessions off the event loop with async single-flight**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `80f4c6d6bf`, `#115684`

## Fix status

- Merged to main in PR #115684 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-19`.
- Subsystem: `acp`