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Firecrawl

The @mastra/browser-firecrawl package provides browser automation using the Firecrawl Browser Sandbox. It provisions remote browser sessions through the Firecrawl API and drives them with the same deterministic, accessibility-first tools as AgentBrowser.

FirecrawlBrowser extends AgentBrowser, so agents get the same toolset (browser_goto, browser_snapshot, browser_click, and so on) while the browser itself runs in Firecrawl's hosted infrastructure. No local Chromium install is needed.

When to use Firecrawl
When to use Firecrawl的直接链接

Use Firecrawl when you need:

  • Hosted browser sessions without managing local Chromium binaries
  • Browser automation in environments that can't launch a local browser
  • Per-thread sandbox isolation with automatic session cleanup
  • Named Firecrawl profiles that persist cookies and login state between sessions

Quickstart
Quickstart的直接链接

Install the package:

npm install @mastra/browser-firecrawl

Set your Firecrawl API key:

.env
FIRECRAWL_API_KEY=fc-...

Create a browser instance and assign it to an agent:

src/mastra/agents/firecrawl-agent.ts
import { Agent } from '@mastra/core/agent'
import { FirecrawlBrowser } from '@mastra/browser-firecrawl'

const browser = new FirecrawlBrowser({
  apiKey: process.env.FIRECRAWL_API_KEY,
})

export const firecrawlAgent = new Agent({
  id: 'firecrawl-agent',
  name: 'Firecrawl Agent',
  model: 'openai/gpt-5.6-sol',
  browser,
  instructions: `You are a web automation assistant.

When interacting with pages:
1. Use browser_snapshot to get the current page state and element refs
2. Use the refs (like @e1, @e2) to target elements for clicks and typing
3. After actions, take another snapshot to verify the result`,
})

If apiKey is omitted, the provider reads FIRECRAWL_API_KEY from the environment.

Session scope
Session scope的直接链接

FirecrawlBrowser follows the same scope option as AgentBrowser:

  • 'thread' (default): Each conversation thread gets its own Firecrawl sandbox session. Sessions are deleted when the thread's browser closes.
  • 'shared': One Firecrawl sandbox session is shared across all threads and deleted when the browser closes.
const browser = new FirecrawlBrowser({
  scope: 'shared',
})

Session options
Session options的直接链接

Pass Firecrawl-specific session options under the firecrawl key. These map to the Firecrawl browser() API:

const browser = new FirecrawlBrowser({
  firecrawl: {
    ttl: 600,
    activityTtl: 120,
    profile: {
      name: 'my-profile',
      saveChanges: true,
    },
  },
})
  • ttl: Maximum session lifetime in seconds.
  • activityTtl: Idle timeout in seconds before Firecrawl recycles the session.
  • profile: Named Firecrawl profile that persists cookies and login state. Set saveChanges: true to save profile changes when the session ends.
备注

The nested firecrawl.profile option refers to a profile stored in Firecrawl's infrastructure. It's different from the top-level profile option inherited from AgentBrowser, which is a local Playwright user-data directory path.

Self-hosted Firecrawl
Self-hosted Firecrawl的直接链接

To use a self-hosted Firecrawl API, set apiUrl:

const browser = new FirecrawlBrowser({
  apiUrl: 'https://firecrawl.internal.example.com',
})
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