Cairn

Agent-to-Agent protocol support and implementation

NousResearch/hermes-agent · cluster 514 · acp

Data as of

Nothing open on GitHub. Fix merged in #77109. Check it covers your case.

The short answer

0open issues
0open PRs
8items grouped
Known?
Yes. 8 related items grouped here, 2 issues already closed.
Fix event
A fix was merged to main in PR #77109. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this partially resolved, deciding PR #77109. That is separate from the fix event.
Still open
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.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #77109 feat(a2a): Agent-to-Agent protocol plugin, A2A v1.0 (closes #514)

    merged to main

    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

5 PRs closed without merging

From the close comments: closed without comment 3 · done elsewhere 1 · superseded by another PR 1

  • #4135 feat: add A2A (Agent-to-Agent) protocol integration · superseded by another PR → #41711
  • #4948 feat(a2a): implement A2A client tools and server (closes #514 phases 1 & 2) · closed without comment
  • #4952 feat(tools): implement A2A client tools and server (closes #514 phases 1 & 2) · closed without comment
  • #41711 feat(a2a): consolidated Agent-to-Agent protocol plugin (closes #514) · done elsewhere → #77109, #56437
  • #77655 fix(security): create the remaining plaintext transcript artifacts owner-only · closed without comment
Closed issues · 2
  • Closed#514Feature: A2A (Agent-to-Agent) Protocol Support — Remote Agent Discovery, Communication & Interoperability
  • Closed#4454[Feature]: Add A2A (Agent-to-Agent) Protocol Support
How this cluster was grouped
  • Link evidence (partly structural links): 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 item 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.

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At a glance

Subsystem
acp
Merged PRs
#77109
Closed issues
2
Attempts
5 PRs closed without merging
Fix link checked
2 Aug 2026

For your agent

The same facts, typed.

cluster/514.json
cluster/514.md