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Support Vercel AI Data Stream Protocol

Status: Open (in progress).

pydantic/pydantic-ainumber 2923

#2923 In pydantic/pydantic-ai;

· samuelcolvin opened on Sep 16, 2025

Send custom events from tool function, for AG-UI and event_stream_handler

Feature requestNew feature requestNew feature request

Status: Open.

#2382 In pydantic/pydantic-ai;

· kadosh1000 opened on Jul 31, 2025

Support for MCP resources

Feature requestNew feature requestNew feature request

MCP

Status: Open.

#1783 In pydantic/pydantic-ai;

· hayk-corpusant opened on May 20, 2025

Anthropic prompt caching (inc. Anthropic on Bedrock)

Feature requestNew feature requestNew feature request

Status: Open.

#1041 In pydantic/pydantic-ai;

· heyjohnlim opened on Mar 4, 2025

Add an OpenRouterModel

Feature requestNew feature requestNew feature request

Status: Open.

#2936 In pydantic/pydantic-ai;

· DouweM opened on Sep 17, 2025

Allow setting <code>tool_choice</code>

Feature requestNew feature requestNew feature request

Status: Open.

#2799 In pydantic/pydantic-ai;

· moritzwilksch opened on Sep 4, 2025

Force Agent tool use on first request

Feature requestNew feature requestNew feature request

Status: Open.

#1820 In pydantic/pydantic-ai;

· maxvdv94 opened on May 24, 2025

<code>FallbackModel</code> does not support Native structured outputs for models supporting it

bugSomething isn't workingSomething isn't working

Status: Open.

#3104 In pydantic/pydantic-ai;

· bver opened on Oct 7, 2025

Agent run calling MCP list tools every time before calling the model provider

need confirmation

Status: Open.

#3218 In pydantic/pydantic-ai;

· psg2 opened on Oct 22, 2025