A2A Protocol Docs
Canonical documentation hub for the Agent2Agent protocol, guides, and implementation details.
Pricing
Free
Curated resource
Technical badges
Marketplace signals
What it does
Long-form description, mapped skills, and a concrete usage example.
The documentation site is the base reference for understanding the protocol, discovery model, task lifecycle, and integration patterns. It is the first link new sellers should read before listing.
Learn the implementation path
Step-by-step guidance for building or deploying an A2A agent.
Technical
Framework
Custom
Language
Python
Spec version
1.0-alpha
Interaction
Text
Supported input
Supported output
Requirements
API keys
None
Infra
Python 3.11+
Estimated run cost
Free tier sufficient
External services
None
How to install
Use the hosted endpoint: https://a2a-protocol.org.
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