Overview - Corsair

Use Browser Use through Corsair: one client, typed API calls, local DB sync. What you get:

8 typed API operations
2 synced entities (browsers, runs) for fast .search() / .list()

Setup

Install

npm install corsair @corsair-dev/browseruse

yarn add corsair @corsair-dev/browseruse

pnpm install corsair @corsair-dev/browseruse

bun add corsair @corsair-dev/browseruse

Add the plugin

corsair.ts

import Database from 'better-sqlite3';
import { createCorsair } from 'corsair';
import { browseruse } from '@corsair-dev/browseruse';

export const corsair = createCorsair({
	plugins: [
		browseruse(),
	],
	database: new Database('corsair.db'),
	kek: process.env.CORSAIR_KEK!,
	multiTenancy: true,
	hub: {
		projectApiKey: process.env.CORSAIR_API_KEY!,
		signingSecret: process.env.CORSAIR_SIGNING_SECRET!,
	},
});

With multiTenancy: true, scope calls with corsair.withTenant(id). See Quick start for KEK + Hub keys, and Multi-tenancy for account isolation.

Choose authentication

API Key (Recommended)

No setup required yet. When you make your first request as a tenant, Corsair prompts for the API key.

browseruse()

More: API Key

Connect a tenant

Mint a connect link and send the tenant to it. Hub hosts the page and delivers the result to your app — see Connect / OAuth.

const { connectUrl } = await corsair.manage.connect.createLink({
	plugin: 'browseruse',
	tenantId: 'acme',
});
// redirect the user's browser to connectUrl

Example API calls

Read an agent run result

const tenant = corsair.withTenant('acme');
await tenant.browseruse.api.runs.get({ id: '00000000-0000-0000-0000-000000000000' });

Start a cloud browser

const tenant = corsair.withTenant('acme');
await tenant.browseruse.api.browsers.create({ timeout: 15 });

See the full list on the API page.

Query synced data

Runs are merged by id. A status poll updates status and leaves the task and result already stored.

const tenant = corsair.withTenant('acme');
const rows = await tenant.browseruse.db.runs.search({
	data: { model: 'gpt-6-luna' },
	limit: 50,
});

Synced entities: browsers, runs. See Database for filters and operators.

What’s next

API reference

Every browseruse.api.* operation with input and output types.

Database

Synced entities, search filters, and operators.

Connect / OAuth

createLink, Hub delivery, and tenant connect flows.

Use with agents

Expose this plugin’s operations as MCP tools.

​Setup

​Example API calls

​Query synced data

​What’s next