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/v4

The core loop

Create a run, poll its status until terminal, then fetch the full result. status is a cheap indexed lookup — poll it, not the full run.

Create a run

curl -X POST https://api.browser-use.com/api/v4/runs \
  -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"}'

Poll status until completed | failed | cancelled (replace RUN_ID)

curl https://api.browser-use.com/api/v4/runs/RUN_ID/status \
  -H "X-Browser-Use-API-Key: bu_your_key_here"

Fetch the full run once it's terminal

curl https://api.browser-use.com/api/v4/runs/RUN_ID \
  -H "X-Browser-Use-API-Key: bu_your_key_here"

Sessions and follow-ups

A run belongs to a session (a conversation). Send a follow-up message to a session’s queue — it runs as the next turn, or immediately with interrupt: true:

Queue a follow-up (replace SESSION_ID)

curl -X POST https://api.browser-use.com/api/v4/sessions/SESSION_ID/queue \
  -H "X-Browser-Use-API-Key: bu_your_key_here" \
  -H "Content-Type: application/json" \
  -d '{"text": "Now open the top result", "interrupt": false}'

SDKs

The Cloud SDK wraps this loop — runs.create() then runs.waitForCompletion() / runs.wait_for_completion() — for TypeScript and Python.

Get Started

Endpoints

Authentication

Base URL

The core loop

Sessions and follow-ups

SDKs

​Authentication

​Base URL

​The core loop

​Sessions and follow-ups

​SDKs

Authentication

Base URL

The core loop

Sessions and follow-ups

SDKs