# NousResearch/hermes-agent · Browser session leaks under multiplexing, cleanup fixes

## Open now

- Nothing open on GitHub.

These items concern a bug where multiplexed browser sessions are not properly reclaimed or closed during inactivity, causing Chromium process leaks. The work involves fixes to idle session cleanup and broader multiplexing infrastructure including per-profile hooks and scoped threads.

## TL;DR

- 3 member(s): 0 open issue(s), 1 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 #101255. Verify it addresses your case.
- **Recommended:** read PR #101255 (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-101255`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #86402: \[Bug\]: browser inactivity cleanup thread never closes a session under multiplexing (UnscopedSecretError) — leaks one Chromium per stuck session

## Prior & competing PRs

- **#101255: fix(gateway): per-profile hooks, MCP discovery, webhook skills, and scoped browser/Hindsight threads under multiplex (#92672 #95518 #86402 #92608 #67277, salvage #92682 #95542 #86472)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/outbound_webhooks.py`, `agent/shell_hooks.py`, `agent/skill_commands.py`, `agent/skill_utils.py`, `contributors/emails/[redacted:email]`, `gateway/platforms/webhook.py`, `gateway/run.py`, `hermes_cli/plugins.py`, `plugins/memory/hindsight/__init__.py`, `tests/agent/test_outbound_webhooks.py`, `tests/agent/test_skill_commands.py`, `tests/gateway/test_multiplex_adapter_registry.py`, `tests/gateway/test_multiplex_mcp_discovery.py`, `tests/gateway/test_webhook_adapter.py`, `tests/hermes_cli/test_plugins.py`, `tests/plugins/memory/test_hindsight_provider.py`, `tests/tools/test_browser_cleanup.py`, `tests/tools/test_mcp_lazy_start.py`, `tools/browser_tool.py`, `tools/mcp_tool.py` (+2 more)
- **#86472: fix(browser): reclaim idle multiplexed sessions before Chromium leaks**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `bd81bf03275`, `#101255`

## Fix status

- Merged to main in PR #101255 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-02`.
- Subsystem: `agent`