---

name: next-browser description: Use Nextbrowser cloud API to spin up cloud browsers for Openclaw to run autonomous browser tasks. Primary use is creating browser sessions with profiles (persisted logins/cookies) that Openclaw can control to manage social media and other online accounts. Secondary use is running task subagents for fast autonomous browser automation under residential proxy, browser stealth, and CAPTCHA solving capability. Docs at docs.nextbrowser.com.

Nextbrowser

Nextbrowser provides cloud browsers and autonomous browser automation via API.

Docs:

• Cloud API: https://docs.nextbrowser.com/getting-started

Setup

API Key is read from openclaw config at skills.entries.next-browser.apiKey.

If not configured, tell the user:

To use Nextbrowser, you need an API key. Get one at https://app.nextbrowser.com/user-settings (new signups get 2000 free credits). Then configure it:

openclaw config set skills.entries.next-browser.apiKey "nb_your_key_here"

Base URL: https://app.nextbrowser.com/api/v1

All requests need header: Authorization: x-api-key <apiKey>

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1. Profiles

Profiles persist cookies and login state across browser sessions. Create one, log into your accounts in the browser, and reuse it.

# List profiles
curl "https://app.nextbrowser.com/api/v1/browser/profiles" -H "Authorization: x-api-key $API_KEY"

# Create browser profile
curl -X POST "https://app.nextbrowser.com/api/v1/browser/profiles" \
  -H "Authorization: x-api-key $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "<profile-name>", "browser_settings": {"os_type": "<os-type>", "browser_type": "chrome"},
   "proxy_settings":{"protocol":"<http|https|socks5>","country":"<iso-2-country-code>","mode":"built-in"}}'

# Delete profile
curl -X DELETE "https://app.nextbrowser.com/api/v1/browser/profiles/<profile-id>" \
  -H "Authorization: x-api-key $API_KEY"

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2. Credentials Manager

The Credentials Manager securely stores and reuses authentication data across browser runs and autonomous tasks.

# List credentials
curl "https://app.nextbrowser.com/api/v1/users/credentials" -H "Authorization: x-api-key $API_KEY"

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3. Tasks (Subagent)

Run autonomous browser tasks - like a subagent that handles browser interactions for you. Give it a prompt and it completes the task.

Always use fast mode - optimized for browser tasks, 3-5x faster than other models. Always use true for skip_plan_approval - optimized for automated tasks, skips the approval and improve performance.

curl -X POST "https://app.nextbrowser.com/api/v1/chat/tasks" \
  -H "Authorization: x-api-key $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "task_description": "'"\
Go to Reddit.com account, check if the account is logged in (if not, use credentials stored). \
Find 10 relevant posts on the topic of AI Agents, upvote 8 of them and post 3 witty-sounding comments \
that a cynical and funny Reddit user would post. Ensure that the comment is posted, ask for approval \
if you are not sure whether such comment is okay. By the end, you should have at least 10 relevant posts \
viewed, 8 upvotes, and 3 comments."\
"'",
    "mode": "fast",
    "profile_id": "<profile-id>",
    "credentials": ["<credential-id>"],
    "skip_plan_approval": true
  }'

Poll for completion

curl "https://app.nextbrowser.com/api/v1/chat/tasks/<task-id>" -H "Authorization: x-api-key $API_KEY"

Response:

{
    "success": true,
    "payload": {
        "status": "finished",
        "output": "Task completed. 10 relevant posts are viewed, 8 upvotes are done and 3 comments posted.",
        "isSuccess": true
    },
    "errors": {},
    "description": "Task retrieved successfully"
}

Status values: processing, finished, failed

Task options

Option	Description
task_description	Your prompt (required)
mode	Always use fast
profile_id	Use a profile for auth
credentials	List of credential IDs for login
skip_plan_approval	Always use true

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Full API Reference

See references/api.md for all endpoints including Sessions, Files, Skills, and Skills Marketplace.