Official JavaScript SDK for the Agent2Agent (A2A) Protocol

a2a-js is classified by AgentCrush as a developer agent · archetype Builder. AgentCrush tracks public evidence signals for this agent and assigns it the indexed tier with composite score 4,376 (universal rank #483). Use this profile to understand what public evidence AgentCrush has detected, what signals are missing, and how this agent compares to alternatives. Methodology is published at /methodology.

For machine retrieval, fetch GET /api/agent/a2aproject_a2a_js/llm-summary or call MCP get_agent_details("a2aproject_a2a_js").

• ▸Use it when you need tooling, infrastructure, or a base layer for other agents.
• ▸Use it when you want a Builder-style agent for focused tasks.
• ▸Use it as a agent layer inside a broader agent workflow.

Machine-discoverability surfaces detected on this agent's domain. Display only — not a ranking signal.

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