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A2A Connector Release Notes - Mule 4

Anypoint Connector for Agent2Agent (A2A) (A2A Connector) facilitates inter-agent communication for Large Language Model (LLM) agents and other applications by implementing the A2A protocol. This enables agents to interact and delegate specialized tasks to other agents.

Guide: A2A Connector User Guide

0.3.0-BETA

August 6, 2025

What’s New

  • A2A Connector now supports distributed tracing.

  • These types are added:

    • Certificate Data

    • Certificate Extension

    • Alternative Name Data

    • Principal Data

    • X500 Principal Data

    • Public Key Data

    • Serial Number Data

  • The Request Attributes type now includes the Version, Scheme, Method, Local Address, Remote Address, and Client Certificate fields.

For more information, see the A2A Connector Reference.

Compatibility

Software Version

Mule

4.9.4 and later

OpenJDK

17

A2A protocol

0.2.3

Fixed Issues

Issue Resolution ID

Task history exceptions no longer abort the correct execution of the flow. Task history failures are now logged but do not affect the A2A response sent to the client.

W-19127970

Disabling task history now properly bypasses task history processing. Task history processing no longer performs unnecessary serialization when disabled, improving performance and preventing serialization failures.

W-19128017

0.2.0-BETA

July 29, 2025

What’s New

  • A2A Connector now uses A2A protocol 0.2.3 instead of 0.1.0.

  • The Client connection type now supports default headers.

  • The Get Card and Send Message operations are added.

  • A2A Connector now supports task history, and the A2A:TASK_ALREADY_COMPLETED and A2A:TASK_NOT_FOUND errors are included in all operations.

  • These types are added:

    • Agent Extension

    • Security Requirement

    • Http Security Scheme

    • Api Key Security Scheme

    • Oauth2 Security Scheme

    • Oauth2 Flows

    • Implicit Oauth2 Flows

    • Oauth2 Scope

    • Password Oauth2 Flows

    • Client Credentials Oauth2 Flows

    • Authorization Code Oauth2 Flows

    • Open Id Connect Security Scheme

For more information, see the A2A Connector Reference.

Compatibility

Software Version

Mule

4.9.4 and later

OpenJDK

17

A2A protocol

0.2.3

0.1.0-BETA

May 27, 2025

What’s New

This is a new connector.

Anypoint Connector for Agent2Agent (A2A) is a beta connector that is subject to the Beta Services Terms at Agreements - Salesforce.com or a written Unified Pilot Agreement if executed by Customer, and the Non-GA Gen AI and Non-GA Credit Consumption terms in the Product Terms Directory. Use of this beta connector with external systems or services consumes Mule messages and is at the Customer’s sole discretion.

For more information, see the A2A Connector User Guide.

Compatibility

Software Version

Mule

4.9.4 and later

OpenJDK

17

A2A protocol

0.1.0

See Also