ErrorExtensionServer

Python SDK Reference / A2A Extensions / UI Extensions / ErrorExtensionServer

from agentstack_sdk.a2a.extensions.ui import ErrorExtensionServer

Bases: BaseExtensionServer[ErrorExtensionSpec, NoneType]

Class Attributes

Attribute	Type	Default
context	JsonValue	—

Methods

Constructor · __init__

Parameters

Name	Type	Default
args	Any	()
kwargs	Any	{}

Returns: None

async lifespan

Set up request-scoped error context using ContextVar

Set up request-scoped error context using ContextVar. Returns: AsyncIterator[None]

error_metadata

Create metadata for an error

Create metadata for an error.

Args: error: The exception to convert to metadata

Returns: Metadata dictionary with error information Parameters

Name	Type	Default
error	BaseException	—

Returns: Metadata

message

Create an AgentMessage with error metadata and serialized text representation

Create an AgentMessage with error metadata and serialized text representation.

Args: error: The exception to include in the message

Returns: AgentMessage with error metadata and markdown-formatted text Parameters

Name	Type	Default
error	BaseException	—

Returns: AgentMessage