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title: A2A Schema Validation Policy
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# A2A Schema Validation Policy

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

<table><colgroup><col> <col></colgroup><tbody><tr><td><p><strong>Policy Name</strong></p></td><td><p>A2A Schema Validation</p></td></tr><tr><td><p><strong>Summary</strong></p></td><td><p>Validates Agent requests to ensure they conform to the A2A specification</p></td></tr><tr><td><p><strong>Category</strong></p></td><td><p>A2A</p></td></tr><tr><td><p><strong>First Omni Gateway version available</strong></p></td><td><p>v1.9.3</p></td></tr><tr><td><p><strong>Release Notes</strong></p></td><td><p><a href="https://docs.mulesoft.com/release-notes/gateway/policies/a2a-schema-validation-release-notes">A2A Schema Validation</a></p></td></tr><tr><td><p><strong>Returned Status Codes</strong></p></td><td></td></tr></tbody></table>

> [!NOTE] This policy supports Agent2Agent Protocol (A2A) version v0.3.0. To learn more about A2A
> versions, see [A2A Releases](https://github.com/a2aproject/A2A/releases).

## Summary

The A2A Schema Validation policy validates that every request to the A2A server complies with the
A2A schema. If validation fails it will report a Policy Violation.

There are no configuration parameters for this policy.

### Omni Gateway Local Mode

The A2A Schema Validation policy isn’t supported in Local Mode.