A2A Protocol Validator
Enter an A2A agent URL to fetch and visualize its Agent Card information.
Example URLs to try:
Note: These are examples. The actual agent must implement the A2A protocol.
Understanding the A2A Protocol Validator
The A2A Protocol Validator is a powerful tool that helps you discover, analyze, and validate Agent Cards - the standardized discovery mechanism for AI agents implementing the Agent-to-Agent (A2A) protocol.
What is an Agent Card?
An Agent Card is a standardized JSON document that serves as a "business card" for AI agents. It's hosted at .well-known/agent.jsonand contains essential information about an agent's capabilities, skills, and how to interact with it.
Key Components:
- Basic Information: Name, description, version, and service URL
- Provider Details: Organization information and documentation
- Capabilities: Streaming, push notifications, state management
- Skills: Specific tasks and functions the agent can perform
Discovery Benefits:
- Standardized agent discovery across the internet
- Quick capability assessment before interaction
- Security scheme and authentication information
- Skill-based agent selection and routing
How the A2A Protocol Validator Works
Our validator tool performs comprehensive analysis of Agent Cards to ensure they comply with theA2A specification and provide meaningful insights about agent capabilities.
Discovery
- • Fetches
/.well-known/agent.json - • Validates JSON structure
- • Checks required fields
- • Handles CORS and security
Validation
- • Schema compliance checking
- • Security scheme validation
- • URL and endpoint verification
- • Capability consistency
Visualization
- • Interactive card display
- • Skill categorization
- • Capability highlighting
- • Raw JSON inspection
Agent Card Structure Deep Dive
CoreEssential Fields
nameHuman-readable agent identifier
descriptionWhat the agent does and its purpose
urlBase URL for A2A protocol interactions
versionAgent implementation version
AdvancedOptional Fields
capabilitiesTechnical capabilities (streaming, notifications)
skillsArray of specific agent abilities and use cases
securitySchemesAuthentication and authorization methods
providerOrganization and contact information
Common Validation Issues
Discovery Problems:
- • Missing
/.well-known/agent.jsonfile - • Incorrect CORS headers preventing access
- • Invalid JSON syntax or structure
- • 404 errors or server misconfigurations
Schema Violations:
- • Missing required fields (name, description, url)
- • Invalid security scheme definitions
- • Malformed skill objects or capabilities
- • Incorrect input/output mode specifications
Get Started with Agent Discovery
Ready to explore the world of A2A-enabled agents? Use the validator above to discover and analyze agent capabilities, or learn how to implement your own Agent Card using our comprehensive specification.