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AgentUI

LLM adapters: provider stream → wire events

import Anthropic from "@anthropic-ai/sdk";
import { fromAnthropic } from "@kibadist/agentui-llm";


const anthropic = new Anthropic();
const stream = anthropic.messages.stream({
  model: "claude-sonnet-4-5",
  messages: [{ role: "user", content: userMessage }],
});


for await (const event of fromAnthropic(stream, { sessionId })) {
  res.write(`data: ${JSON.stringify(event)}\n\n`);
}

fromOpenAI and fromGemini follow the same shape. Each adapter maps:

  • Text → ui.append (first delta creates a text-block node) + ui.replace for subsequent deltas.
  • Tool calls → tool.start + tool.args-delta (host executes the tool and emits tool.result itself).
  • Reasoning (Anthropic extended thinking only) → reasoning.start / .delta / .end.
  • Stream errors → ui.toast with level: "error".

Each provider’s SDK is a peer-dependency of @kibadist/agentui-llm — install only the ones you use.

Section titled “Related”