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 "YOUR_API_KEY"

Important: Nextbrowser API keys can have various formats and prefixes. Do NOT validate the key format yourself - simply use whatever key the user provides. If the key is invalid, the API will return an authentication error, and only then should you ask the user to verify their key.

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

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

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1. 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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2. 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"},
   "credentials": ["<credential-id>"]}'

# 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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3. Locations

The Locations endpoints provide available geolocation metadata for proxy and browser configuration. Use them to dynamically discover supported countries, regions, cities, and ISPs before creating profiles or running tasks under specific network conditions.

# List Countries
curl "https://app.nextbrowser.com/api/v1/location/countries?\
limit=<limit>&\
offset=<offset>&\
name=<name>&\
code=<iso2-code>&\
connection_type=<connection-type>" \
  -H "Authorization: x-api-key $API_KEY"

# List Regions
curl "https://app.nextbrowser.com/api/v1/location/regions?\
country__code=<iso2-country>&\
limit=<limit>&\
offset=<offset>&\
name=<name>&\
code=<region-code>&\
city__code=<city-code>&\
connection_type=<connection-type>" \
  -H "Authorization: x-api-key $API_KEY"

# List Cities
curl "https://app.nextbrowser.com/api/v1/location/cities?\
country__code=<iso2-country>&\
limit=<limit>&\
offset=<offset>&\
name=<name>&\
code=<city-code>&\
region__code=<region-code>&\
connection_type=<connection-type>" \
  -H "Authorization: x-api-key $API_KEY"

# List ISPs
curl "https://app.nextbrowser.com/api/v1/location/isps?\
country__code=<iso2-country>&\
limit=<limit>&\
offset=<offset>&\
name=<name>&\
code=<isp-code>&\
region__code=<region-code>&\
city__code=<city-code>&\
connection_type=<connection-type>" \
  -H "Authorization: x-api-key $API_KEY"

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4. 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>",
    "skip_plan_approval": true
  }'

Endpoint: Poll for completion

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

curl "https://app.nextbrowser.com/api/v1/chat/tasks/<task-id>?from_step=3" \
  -H "Authorization: x-api-key $API_KEY"

• Query params (optional):
  • from_step: integer >= 1. First step index to return. Defaults to 1 if missing/invalid. Use this parameter to poll only new steps.

Response

{
  "success": true,
  "payload": {
    "status": "finished",
    "output": "Task completed. 10 relevant posts are viewed, 8 upvotes are done and 3 comments posted.",
    "isSuccess": true,
    "steps": [
      {
        "created_at": "2025-01-01T10:00:00Z",
        "finished_at": "2025-01-01T10:00:05Z",
        "description": "Opened Reddit search page",
        "status": "completed",
        "step_number": 1
      }
      // ... more steps starting from from_step
    ],
    "total_steps": 5
  },
  "errors": {},
  "description": "Task retrieved successfully"
}

Field semantics

• status: high-level task status: "processing" | "finished" | "failed".
• output: final task output (if available).
• isSuccess: true if task finished successfully, otherwise false.
• steps: list of task steps starting from from_step (or from 1 by default).
• step_number: sequential number of the step within the task, always starting at 1 in this array.
• total_steps: total number of steps the task has, independent of from_step.

Task options

Option	Description
task_description	Your prompt (required)
mode	Always use fast
profile_id	Use a profile for auth
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.