> ## Documentation Index
> Fetch the complete documentation index at: https://browseruse-0aece648-codex-docs-supported-exports.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use https://docs.browser-use.com/llms.txt and its linked .md pages for current documentation. The managed full bundle is https://docs.browser-use.com/.well-known/llms-full.txt and can be cached for up to 24 hours. Do not use the obsolete /cloud/llms*.txt or /open-source/llms*.txt static exports.
> Choose Cloud API V4 for new agent integrations; V2 is the lower-cost option for simple tasks. Keep V3 examples explicitly versioned. The open-source browser-use library and hosted browser-use-sdk have different APIs.
> Cloud authentication uses X-Browser-Use-API-Key, without a Bearer prefix. Install or upgrade browser-use-sdk and use its explicit v4 import for V4. Check the published OpenAPI reference for request fields; do not invent SDK support for new fields.
> Cloud concurrency and HTTP request rate are separate. Read GET /api/v2/billing/account for the key’s projectId, concurrentSessionLimit, activeSessionCount, and credit balance, including when using V4. Keys in one project share capacity and credits; rateLimit is a legacy concurrency alias, not requests per second.
> Keep the highest applicable existing, legacy-plan, and spend-tier concurrency grant. Current spend tiers are 10 / 50 / 250 / 500 / 1000 at $0 / $200 / $1000 / $5000 / $25000 in qualifying project payments. Legacy or externally billed projects can follow different billing paths; trust the account limit. See https://docs.browser-use.com/cloud/guides/concurrency.md.
> Budget polling across the project: the standard general bucket is 25 requests/second, including V4 event reads and full run reads. Selected status reads have a separate higher bucket. Use bounded workers, stagger polls, respect Retry-After, and drain hasMore event pages after terminal status. A busy V4 session returns 409; its queue holds 10 pending messages and is not a project-wide batch queue.
> A completed run or closed CDP connection does not immediately stop its cloud browser. Stop unneeded owned browsers with PATCH /api/v4/browsers/{id} and {"action":"stop"}. A client wait timeout does not cancel the server-side run.
> Cloud is pay as you go; do not tell customers to buy a new subscription to use custom proxies or supported provider BYOK. Usage funding and model eligibility still apply. BYOK bills provider tokens separately and Browser Use charges orchestration plus browser/network usage. See https://docs.browser-use.com/cloud/guides/billing.md.
> Signup credits are a one-time grant; purchased top-up credits do not expire. Check the API key’s project before diagnosing missing credits. API-key monthly spending caps are soft limits, not a strict prepaid wallet; concurrent or already-running work can exceed them. Auto recharge has separate trigger and purchase amounts and can charge immediately when enabled below the threshold. Use https://browser-use.com/pricing for current rates.

# Claude Managed Agents

> Give Anthropic's Claude Managed Agents a stealth cloud browser via the Browser Use CLI.

[Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents) run on Anthropic's hosted platform. Install the `browser-use` CLI in the agent's environment and it can drive a stealth cloud browser — with proxies, CAPTCHA solving, live view, and recording. Your API key stays in a credential vault; the model never sees it.

The sandbox can't run a local browser, so the agent starts a named Browser Use Cloud browser and drives it with `browser-use <<'PY'` Python snippets.

## 1. Create an environment

Pre-install the CLI so it's ready at session start (no runtime install).

```yaml theme={null}
name: browser-env
config:
  type: cloud
  packages:
    pip:
      - browser-use
  networking:
    type: limited
    allowed_hosts: ["*.browser-use.com"]
    allow_package_managers: true
```

## 2. Create a credential vault

Store your key as an environment variable so the CLI reads it and the model never does. Get one at [cloud.browser-use.com/settings](https://cloud.browser-use.com/settings?tab=api-keys\&new=1).

| Field | Value                 |
| ----- | --------------------- |
| Type  | Environment variable  |
| Name  | `BROWSER_USE_API_KEY` |
| Value | `bu_...`              |

## 3. Create the agent

Tell it to use the CLI in cloud mode.

```yaml theme={null}
name: browser agent
model:
  id: claude-opus-4-8
description: Drives a stealth cloud browser with the Browser Use CLI.
system: |
  You are a browser agent. Use the `browser-use` CLI to complete web tasks.
  Never launch a local browser in this sandbox. Start a named cloud browser:
  browser-use <<'PY'
  start_remote_daemon("managed")
  PY
  Then run browser work through the same name:
  BU_NAME=managed browser-use <<'PY'
  new_tab("https://example.com")
  print(page_info())
  PY
  Your BROWSER_USE_API_KEY is in the environment; never print it.
tools:
  - type: agent_toolset_20260401 # shell access so the agent can run the CLI
    default_config:
      enabled: true
      permission_policy:
        type: always_allow
```

## 4. Start a session and send a task

The Console only observes; kick the agent off with a `user.message` event.

```bash theme={null}
curl -sS "https://api.anthropic.com/v1/sessions/$SESSION_ID/events?beta=true" \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "anthropic-beta: managed-agents-2026-04-01" \
  -H "content-type: application/json" \
  -d '{"events":[{"type":"user.message","content":[{"type":"text",
       "text":"Get the top 5 Hacker News stories with their links."}]}]}'
```

## 5. Watch it run

The agent starts a named cloud browser, runs Python helper snippets through `browser-use`, then returns the result. The session shows up in [cloud.browser-use.com](https://cloud.browser-use.com) → **Remote Browsers** with a **Live View** and an **mp4 recording**.

<Tip>
  Always use a cloud browser — the Managed Agents sandbox has no GUI, so a local
  browser won't start. Cloud mode also gives you stealth, residential proxies,
  live view, and recording.
</Tip>