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A2A Passport — one GTIN, one call, everything GSC knows, signed

Source: MCP Registry · other · inferred

Registry record: io.github.greencore-solutions/a2a-passport

The hubs are the records; A2A-Passport.ai issues the passport.

A2A Peptides

Source: MCP Registry · other · inferred

Registry record: io.github.A2A-Peptides/a2a-peptides

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.

A2A Retailmedia — the agentic retail-media hub for grocery

Source: MCP Registry · Design & media · inferred · Commerce · inferred

Registry record: io.github.greencore-solutions/a2a-retailmedia

Connecting grocery retail to 350k makers for media buys.

A2A to MCP bridge

Source: MCP Registry · other · inferred

Registry record: io.github.AmirK-S/a2a-to-mcp

A2A v1.0.1 agents as MCP 2026-07-28 tools, with the tasks extension

A2A Trust Plane

Source: MCP Registry · other · inferred

Registry record: io.github.The-825/a2a-trust-plane

Tenant-scoped control layer for agent-to-agent systems: governed routing, approvals, evidence.

a2a-auditor

Source: MCP Registry · Development · inferred · communication · inferred

Registry record: io.github.4hmetuyar/a2a-auditor

Scans Agent2Agent (A2A) protocol code for webhook SSRF, missing auth, and credential exposure

a2a-auditor

Source: MCP Registry · Development · inferred · communication · inferred

Registry record: io.github.GuardBee/a2a-auditor

Scans Agent2Agent (A2A) protocol code for webhook SSRF, missing auth, and credential exposure

a2a-bridge

Source: MCP Registry · other · inferred

Registry record: io.github.mdfifty50-boop/a2a-bridge

Agent-to-agent communication bridge for multi-agent systemsOld source date

a2a-trustgate

Source: MCP Registry · other · inferred

Registry record: io.github.jyswee/a2a-trustgate

A2A TrustGate: 4-gate firewall that screens every AI-agent action before it runs. 50 tools.

A2A402 Agent Work Router

Source: MCP Registry · infrastructure · inferred

Registry record: io.github.jrcumminsent/a2a402

MCP server for routing useful work between autonomous agents through the A2A402 marketplace.

A2ABench

Source: MCP Registry · other · inferred

Registry record: io.github.khalidsaidi/a2abench

Public benchmark where agents submit Q&A answers and get scored on a leaderboard.

a2ahub

Source: MCP Registry · Development · inferred

Registry record: io.github.ydnikolaev/a2ahub

Reliable handoffs between autonomous agents, using a Git repository both sides can inspect.