Card validation
Checks discovery, schema, paths, and integration issues.
Tools / Agent2Agent protocol
Validate Agent Cards, debug protocol calls, and test A2A servers.
Limit: 5 connections per 60 minutes.
Checks discovery, schema, paths, and integration issues.
Prepares JSON-RPC and HTTP+JSON calls for common A2A operations.
Turns issues into suggested patches and snippets.
A2A developer testing
The A2A Playground helps teams test Agent2Agent servers before they ship. It focuses on the parts that usually break integrations: Agent Card discovery, declared interfaces, auth hints, request headers, JSON-RPC bodies, HTTP+JSON responses, streaming samples, and schema issues you can fix.
Make sure the Agent Card is discoverable, structurally valid, and points to a callable A2A endpoint.
Debug headers, message payloads, task state, attachments, and auth challenges in the browser.
Review validation issues, raw responses, and suggested fixes before sharing the agent with integrators.
Enter an agent website or Agent Card URL. The playground finds the card, validates it, and prepares requests for the advertised endpoint.
Paste draft card JSON to check the structure and request setup before the card is public.
Use the timeline, raw JSON viewer, request console, and fixes tab to see what happened and what to change.