# NousResearch/hermes-agent · Bypass system proxy for loopback CDP connections

## Open now

- 0 issues, 1 PR open on GitHub.
- PR #110572: fix(browser): bypass proxies for loopback hosts in browser child envs

A bug where websockets>=14 routes loopback CDP connections through the system proxy, breaking browser_exec on macOS. Multiple fix attempts address bypassing the proxy for loopback hosts in browser environments.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 1 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #111405. Verify it addresses your case.
- **Recommended:** read PR #111405 (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-111405`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #110565: \[Bug\]: browser_exec fails on macOS with a system proxy — websockets>=14 auto-proxies the loopback CDP connection ("CDP WS handshake failed")

## Prior & competing PRs

- **#111405: fix(browser): loopback CDP dials bypass the macOS system proxy, browser_exec works again (#110565, salvage #110572)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/proxy_bypass.py`, `hermes_cli/browser_connect.py`, `tests/hermes_cli/test_cli_browser_connect.py`, `tests/tools/test_browser_env_loopback_no_proxy.py`, `tests/tui_gateway/test_tui_gateway_server.py`, `tools/browser_cdp_tool.py`, `tools/browser_supervisor.py`, `tools/browser_tool.py`, `tools/browser_tool_cdp.py`, `tools/browser_tool_real_profile.py`
- **#110570: fix(browser): bypass proxy for loopback CDP**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#111405`
- **#110572: fix(browser): bypass proxies for loopback hosts in browser child envs**. open
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `8f6f92d901`, `95987fb85a`, `#110565`
  - files: `tests/tools/test_browser_env_loopback_no_proxy.py`, `tools/browser_tool.py`
- **#110586: fix(browser): keep loopback CDP dials off system proxies (#110565)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#111405`, `#110565`

## Fix status

- Merged to main in PR #111405 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-15`.
- Subsystem: `agent`