# NousResearch/hermes-agent · Deep-copy plugin context engine to prevent delegate_task corruption

## Open now

- Nothing open on GitHub.

These issues and PRs address a bug where delegate_task corrupts the parent agent's context_length by sharing a plugin context engine singleton. The proposed fix involves deep-copying the context engine to isolate child task state from the parent.

## TL;DR

- 6 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 4 PR(s) closed without merging.
- A fix was merged to main in PR #52134. Verify it addresses your case.
- **Recommended:** read PR #52134 (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-52134`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.33`: 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

- #42449: delegate_task corrupts parent context_length via shared plugin context engine singleton

## Prior & competing PRs

- **#42461: fix(agent): deep-copy context engine singleton to prevent parent corruption (#42449)**. closed without merge · fix tier `suggested`
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#42452`, `#42449`
  - _suggested-tier fix detail withheld; re-request with `?tier=all` to include it._
- **#52134: fix(agent): deepcopy plugin context engine to prevent parent corruption on delegate_task (#42449)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `agent/agent_init.py`, `tests/agent/test_context_engine.py`
- **#42452: fix(agent): deepcopy plugin context engine to prevent parent corruption**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#52134`, `#52134`, `#52134`
- **#42469: fix(agent): deepcopy plugin context engine to prevent parent corruption on delegate_task**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#52134`, `#42449`, `#42452`, `#52134`
- **#42474: fix(agent): deepcopy plugin context engine singleton to prevent parent corruption via delegate_task**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#42469`, `#52134`, `#42449`, `#52134`

## Fix status

- Merged to main in PR #52134 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-06-24`.
- Subsystem: `agent`