The A2A (Agent-to-Agent) protocol is an open standard now part of the Linux Foundation and is revolutionizing how AI agents communicate and collaborate. As the A2A ecosystem grows, so does the need for tools that help developers build, debug, and validate their A2A-compliant servers. We are excited to introduce the A2A Inspector , a web-based tool designed to streamline the development process for anyone working with the A2A protocol.
What is the A2A Inspector?
The A2A Inspector is a web interface that allows you to interact with any A2A agent and inspect communication - you can see the on-the-wire JSON RPC messages going back and forth and ensure that your implementation adheres to the A2A specification. It provides a comprehensive suite of features to test and debug your A2A server, making development faster and more efficient.
You can use the A2A Inspector to:
- Connect to any A2A Agent: Easily connect to a local or remote A2A agent by specifying its base URL
- View agent card: Automatically fetch and display the agent’s card, providing a quick overview of its capabilities.
- Perform specification compliance checks: The tool automatically performs basic validation on the agent card and messages to ensure they conform to the A2A specification.
- Live chat: A chat interface to send and receive messages with the connected agent, allowing for real-time interaction and testing.
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Inspect with clickable messages: Inspect the raw JSON being sent/received for each message by clicking on it .
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Debug console: A debug console at the bottom that can be toggled to inspect the raw HTTP requests and responses and to debug communication issues.
Getting started with the A2A Inspector
Getting the A2A Inspector up and running is straightforward. You can run it locally with the instructions provided on Github. Once the application is running, you can access the A2A Inspector in your web browser and start inspecting your A2A agents.
We encourage you to try it out and provide us with your feedback including any new features you would like to see. You are also welcome to contribute!