# NousResearch/hermes-agent · Agent-to-Agent protocol support and implementation

## Open now

- Nothing open on GitHub.

Most members concern adding A2A (Agent-to-Agent) protocol support, including client tools, server implementation, remote agent discovery, and interoperability. One member addresses a security fix for plaintext transcript artifact file permissions.

## TL;DR

- 8 member(s): 0 open issue(s), 2 closed issue(s), 0 open PR(s), 1 merged PR(s), 5 PR(s) closed without merging.
- A fix was merged to main in PR #77109. Verify it addresses your case.
- **Recommended:** read PR #77109 (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: `partially_resolved` · deciding PR(s): `pr-77109`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_PARTIAL`): some members are connected by structural evidence (shared changed files, or a closing/superseded reference); the rest are joined by an automated relevance judgement over their text.
- Members outside that structural core may belong to a different underlying problem.
- Pairwise link density `0.30`: 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

- #514: Feature: A2A (Agent-to-Agent) Protocol Support — Remote Agent Discovery, Communication & Interoperability
- #4454: \[Feature\]: Add A2A (Agent-to-Agent) Protocol Support

## Prior & competing PRs

- **#77109: feat(a2a): Agent-to-Agent protocol plugin, A2A v1.0 (closes #514)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `contributors/emails/[redacted:email]`, `hermes_cli/tools_config.py`, `plugins/platforms/a2a/DESIGN.md`, `plugins/platforms/a2a/README.md`, `plugins/platforms/a2a/__init__.py`, `plugins/platforms/a2a/adapter.py`, `plugins/platforms/a2a/plugin.yaml`, `plugins/platforms/a2a/protocol.py`, `plugins/platforms/a2a/security.py`, `plugins/platforms/a2a/tools.py`, `tests/plugins/test_a2a_phase23.py`, `tests/plugins/test_a2a_plugin.py`, `website/docs/user-guide/messaging/a2a.md`, `website/docs/user-guide/messaging/index.md`, `website/sidebars.ts`
- **#4135: feat: add A2A (Agent-to-Agent) protocol integration**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#41711`
- **#4948: feat(a2a): implement A2A client tools and server (closes #514 phases 1 & 2)**. closed without merge
  - maintainer direction: category `silent_close`; implication `active`
- **#4952: feat(tools): implement A2A client tools and server (closes #514 phases 1 & 2)**. closed without merge
  - maintainer direction: category `silent_close`; implication `active`
- **#41711: feat(a2a): consolidated Agent-to-Agent protocol plugin (closes #514)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#77109`, `#56437`
- **#77655: fix(security): create the remaining plaintext transcript artifacts owner-only**. closed without merge
  - maintainer direction: category `silent_close`; implication `active`

## Fix status

- Merged to main in PR #77109 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-02`.
- Subsystem: `acp`