# NousResearch/hermes-agent · Fix: stop caching availability-probe client stubs

## Open now

- Nothing open on GitHub.

These issues and fixes address a bug where vision tools disappeared after the first availability probe because the temporary probe client stub was incorrectly cached, poisoning subsequent client lookups.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #110136. Verify it addresses your case.
- **Recommended:** read PR #110136 (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-110136`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.50`: 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

- #87654: Vision tools (vision_analyze/browser_vision) disappear after first availability probe — _AuxProbeClientStub gets cached in _get_cached_client

## Prior & competing PRs

- **#110136: Vision tools no longer vanish after the first availability probe (#87654, salvage #85751)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/auxiliary_client.py`, `contributors/emails/[redacted:email]`, `tests/tools/test_startup_latency_regressions.py`
- **#87664: fix(auxiliary): stop an availability probe from caching its client stub**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#85751`, `#87654`
- **#108733: fix(aux): never cache availability-probe stubs, heal poisoned keys**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `a714ff9823b9`, `#110136`, `#85751`, `#87654`

## Fix status

- Merged to main in PR #110136 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-13`.
- Subsystem: `agent`