API Reference

Authentication

All requests require an API key in the X-Browser-Use-API-Key header:

X-Browser-Use-API-Key: bu_your_key_here

Get a key at cloud.browser-use.com/settings. Keys start with bu_.

Base URL

https://api.browser-use.com/api/v3

OpenAPI spec

The full API surface is published as a machine-readable OpenAPI 3.1 spec — use it to generate typed clients or validate payloads:

https://docs.browser-use.com/openapi.json

Also at /cloud/openapi/v3.json. Legacy v2 spec: /cloud/openapi/v2.json.

Quick example

Create a session

curl -X POST https://api.browser-use.com/api/v3/sessions \
  -H "X-Browser-Use-API-Key: bu_your_key_here" \
  -H "Content-Type: application/json" \
  -d '{"task": "Find the top 3 trending repos on GitHub today"}'

Get session result (replace SESSION_ID)

curl https://api.browser-use.com/api/v3/sessions/SESSION_ID \
  -H "X-Browser-Use-API-Key: bu_your_key_here"

Environment variable

Set the key once so SDKs pick it up automatically:

export BROWSER_USE_API_KEY=bu_your_key_here

Prefer the SDK? See the Agent docs — the SDK has all API endpoints available as methods, including client.browsers.create().

pip install browser-use-sdk

npm install browser-use-sdk

Get Started

Endpoints

Authentication

Base URL

OpenAPI spec

Quick example

Environment variable

​Authentication

​Base URL

​OpenAPI spec

​Quick example

​Environment variable

Authentication

Base URL

OpenAPI spec

Quick example

Environment variable