@langfuse/browser

Browser SDK for sending Langfuse scores from public-key environments.

import { LangfuseBrowserClient } from "@langfuse/browser";

const langfuse = new LangfuseBrowserClient({
  publicKey: "pk-lf-...",
  baseUrl: "https://cloud.langfuse.com",
});

await langfuse.score({
  traceId: "trace-id",
  name: "user_feedback",
  value: 1,
});
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This package only supports score ingestion and uses public-key Bearer auth. Do not pass Langfuse secret keys to browser code.

Documentation

• Docs: https://langfuse.com/docs/sdk/typescript
• Reference: https://js.reference.langfuse.com

License

MIT