# NousResearch/hermes-agent · Tool definition caching and API performance issues

## Open now

- Nothing open on GitHub.

Two items address caching of tool definitions in multiplex gateway scenarios. The third is an unrelated bug report about API server slowness after a version upgrade.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 3 PR(s) closed without merging.
- A fix was merged to main in PR #106752. Verify it addresses your case.
- **Recommended:** read PR #106752 (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: `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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Closed / duplicate issues

- #79047: \[Bug\]: hermes from 0.15.1 udpate to 0.20.1  slow 4 seconds api server mode

## Prior & competing PRs

- **#106752: fix(gateway): api-server requests keep the tool-availability cache unless extension control is on (#79047, salvage #102368)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `tests/tools/test_browser_extension_router.py`, `tools/registry.py`
- **#79062: fix(tools): degrade tool-defs cache instead of full bypass on unresolved multiplex scope (#79047)**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#79047`
- **#80589: fix(tools): cache default-profile tool defs in multiplex gateways (#79047)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `20e01f935b132f0074677e7f2756f4d881807391`, `6ff65c4d2`
- **#102368: fix: \[Bug\]: hermes from 0.15.1 udpate to 0.20.1  slow 4 seconds api server mode (#79047)**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `501d8ba4e0`, `#106752`, `#79047`

## Fix status

- Merged to main in PR #106752 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-20`.
- Subsystem: `gateway`