Crate serdes_ai_ui 

UI protocol adapters for serdesAI.

This crate provides adapters for integrating serdesAI agents with frontend UI frameworks and streaming protocols:

• vercel_ai: Vercel AI SDK Data Stream Protocol (SSE)
• [ag_ui]: AG-UI protocol for rich agent interactions

Feature Flags

• vercel (default): Enable Vercel AI SDK adapter
• ag-ui: Enable AG-UI protocol adapter
• full: Enable all adapters

Example: Vercel AI SDK

use serdes_ai_ui::vercel_ai::{
    VercelAIEventStream, Chunk, VERCEL_AI_DSP_HEADERS, chunks_to_sse
};
use serdes_ai_streaming::AgentStreamEvent;

async fn handle_stream(agent_stream: impl Stream<Item = AgentStreamEvent<()>>) {
    let mut transformer = VercelAIEventStream::new();

    // Emit SSE for start chunks
    let start_sse = chunks_to_sse(&transformer.before_stream());
    send_sse(&start_sse);

    // Transform agent events to SSE
    while let Some(event) = agent_stream.next().await {
        let chunks = transformer.transform_event(event);
        send_sse(&chunks_to_sse(&chunks));
    }

    // Emit SSE for end chunks
    let end_sse = chunks_to_sse(&transformer.after_stream());
    send_sse(&end_sse);
}

Vercel AI Chunk Types

The Vercel AI adapter provides these chunk types:

Category	Chunks
Lifecycle	StartChunk, StartStepChunk, FinishStepChunk, FinishChunk, DoneChunk, AbortChunk
Text	TextStartChunk, TextDeltaChunk, TextEndChunk
Reasoning	ReasoningStartChunk, ReasoningDeltaChunk, ReasoningEndChunk
Tool Input	ToolInputStartChunk, ToolInputDeltaChunk, ToolInputAvailableChunk, ToolInputErrorChunk
Tool Output	ToolOutputAvailableChunk, ToolOutputErrorChunk, ToolOutputDeniedChunk
Sources	SourceUrlChunk, SourceDocumentChunk
Data	DataChunk, FileChunk
Error	ErrorChunk, MessageMetadataChunk

Re-exports

pub use vercel_ai::Chunk;

pub use vercel_ai::FinishReason;

pub use vercel_ai::VercelAIEventStream;

pub use vercel_ai::VERCEL_AI_DSP_HEADERS;

Modules

vercel_ai

Vercel AI SDK adapter for serdesAI.