# NousResearch/hermes-agent · Thread-safety fixes for transport discovery TOCTOU races

## Open now

- 1 issue, 1 PR open on GitHub.
- #24687: concurrency: agent/transports _discovered flag set before imports complete (TOCTOU)
- PR #83794: fix(transports): serialize transport discovery

These issues and pull requests address concurrency bugs—specifically TOCTOU (time-of-check/time-of-use) race conditions—in transport discovery and lazy module resolution. The work focuses on serializing discovery logic and correcting unsafe flag-setting patterns across agent and transport initialization.

## TL;DR

- 5 member(s): 1 open issue(s), 0 closed issue(s), 1 open PR(s), 0 merged PR(s), 3 PR(s) closed without merging.
- No fix has been merged to main; one or more PRs were attempted (see below).
- **Recommended:** review the prior/competing PR(s) below. A fix was attempted but not merged; your case may extend or revive that work.

## 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.40`: 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.

## Open related issues

- #24687: concurrency: agent/transports _discovered flag set before imports complete (TOCTOU)

## Prior & competing PRs

- **#24772: fix(core): close TOCTOU race windows in lazy module resolvers**. closed without merge · fix tier `suggested`
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#24671`, `#24669`, `#24692`, `#24687`, `#24694`, `#24679`, `#24673`
  - _suggested-tier fix detail withheld; re-request with `?tier=all` to include it._
- **#24692: fix(transports): double-checked locking for _discover_transports() TOCTOU**. closed without merge
  - maintainer direction: category `silent_close`; implication `active`
- **#83794: fix(transports): serialize transport discovery**. open
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `35d15127e`, `7a16840ad`, `#83806`
  - files: `agent/transports/__init__.py`, `tests/agent/transports/test_transport_discovery_concurrency.py`
- **#83806: fix(transports): make discovery thread-safe**. closed without merge
  - maintainer direction: category `partial_fix`; implication `needs_llm`; refs `#83794`

## Fix status

- No merged fix on record.
- Subsystem: `agent`