Google's Agent-to-Agent protocol for interoperable AI agent networks
The Agent-to-Agent (A2A) protocol is Google's open specification, part of the Agent Development Kit (ADK), that defines how AI agents discover, communicate, and delegate tasks to one another across different frameworks and vendors. It complements the Model Context Protocol by focusing on agent interoperability rather than tool connectivity, enabling complex multi-agent orchestration. The protocol is aimed at developers building enterprise-grade agentic systems that span multiple specialized agents.
platform, tags were inferred from this tool's own description, not confirmed by its maker. Claim this listing to correct it.
The closest tools in the directory, matched on shared capability rather than category alone.
| Tool | Pricing | API | Open source |
|---|---|---|---|
| google.github.io/adk-docs/a2a/ (this tool) | Paid | Not stated | Not stated |
| Claude Code | Paid | Not stated | Not stated |
| Cursor | Paid | Not stated | Not stated |
| OpenCode | Paid | Not stated | Yes |
| Portia AI | Free | Not stated | Not stated |
The Agent-to-Agent (A2A) protocol is Google's open specification, part of the Agent Development Kit (ADK), that defines how AI agents discover, communicate, and delegate tasks to one another across different frameworks and vendors. It complements the Model Context Protocol by focusing on agent interoperability rather than tool connectivity, enabling complex multi-agent orchestration. The protocol is aimed at developers building enterprise-grade agentic systems that span multiple specialized agents.
google.github.io/adk-docs/a2a/ is Paid. Paid tool. Visit the site to view current pricing plans.
google.github.io/adk-docs/a2a/ runs on Web. Whether it offers a public API isn't stated — check the vendor's docs before planning an integration.
The closest alternatives are Claude Code, Cursor, OpenCode, Portia AI — all coding & dev tools tools that overlap with google.github.io/adk-docs/a2a/ on coding, developer, agent. See the full list at brofindai.com/alternatives/google-github-io-adk-docs-a2a.
google.github.io/adk-docs/a2a/
google.github.io
Paid tool. Visit the site to view current pricing plans.
