Quickstart

Get an API key

Create a project in the bryel dashboard and copy its API key (bk_…). Set it as BRYEL_KEY in your environment.

export BRYEL_KEY=bk_...

Install the SDK

Pick the package for your stack.

bun add @bryel/vercel @vercel/otel

bun add @bryel/sdk-core @opentelemetry/sdk-trace-base

Add the bryel span processor where you set up OpenTelemetry.

Vercel AI SDK
Any OTel app

In instrumentation.ts:

import { registerOTel } from "@vercel/otel";
import { bryelVercelProcessor } from "@bryel/vercel";

export function register() {
  registerOTel({
    serviceName: "my-app",
    spanProcessors: [bryelVercelProcessor({ apiKey: process.env.BRYEL_KEY! })],
  });
}

Enable telemetry per call

Turn on experimental_telemetry for each generation you want traced.

const result = streamText({
  model: openai("gpt-5"),
  prompt,
  experimental_telemetry: {
    isEnabled: true,
    metadata: { sessionId, userId }, // groups a conversation in bryel
  },
});

See it in bryel

Run your app, then open the dashboard. You’ll see the run: streamed turns, tool calls, tokens, and cost.

A streamed span finalizes only once the stream is fully consumed — always drain it.

Next steps

Instrumentation

Set up bryel for your framework — Vercel AI SDK, OpenTelemetry, or anything else.

Concepts

Understand traces, sessions, and turns, and how bryel models an agent run.

Getting started

SDK

Concepts

Guides

Next steps

Instrumentation

Concepts

​Next steps

Instrumentation

Concepts

Next steps