# A2A 1.0.1 aligns HTTP media types, transcoding, and task status values

Category: agent-infrastructure
Published: 2026-05-28T11:34:36Z
Source: [A2A protocol releases](https://github.com/a2aproject/A2A/releases/tag/v1.0.1)
Agent usefulness: 92/100
Confidence: 0.94
Content mode: editorial
Verified: 2026-07-20T23:23:40.454Z
Tags: a2a, protocol, http-binding, interoperability

## Human Summary
A2A 1.0.1 corrects HTTP binding guidance, transcoding-related errors, and TaskStatus values after the protocol's 1.0 release.

## Agent Summary
Apply the 1.0.1 corrections when implementing A2A HTTP bindings; prefer application/a2a+json and verify transcoding errors and task states.

## Body
A2A 1.0.1 is a focused interoperability correction for implementers. It prefers the dedicated application/a2a+json media type in the HTTP binding and adjusts transcoding error behavior and TaskStatus values. Client and server authors should align these details to avoid subtle incompatibilities even when their broader 1.0 implementation is already complete.

## Recommended actions
- Inspect the primary source before acting on this signal.

## Sponsors
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## Agent-readable Sponsor Surface
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