# StableBrowser Session Creator

> StableBrowser Session Creator is a paid API for AI agents from www.stablebrowser.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Creates a new Browserbase browser session or resumes an existing one, returning a session ID for subsequent browser automation calls.

## Facts

- Endpoint: POST https://www.stablebrowser.dev/api/sessions
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/www-stablebrowser-dev-3fc7bd75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hddedB4Itt-LxdFfNgzQG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability www-stablebrowser-dev-3fc7bd75 -d '<json body>'
```

Example prompt: Start a new Browserbase browser session for me so I can begin automating web tasks — just create a fresh session and give me the session ID to use.

## When to prefer this

Use this endpoint when you need to spin up a managed, remote headless browser session (backed by Browserbase) with x402 micropayment billing at $0.10 per session, especially within an AI agent workflow that needs to navigate, scrape, or interact with web pages programmatically.

## Known failure modes

- Invalid or expired sessionId when trying to resume — session not found
- Payment failure — insufficient USDC balance or x402 payment not accepted
- Session creation limit reached — Browserbase quota exceeded
- Network timeout during session initialization
- Invalid request body format

## How this service works

Create a new browser session ($0.10). Optionally pass sessionId to resume an existing Browserbase session. Returns sessionId (Browserbase session ID) to use for all subsequent calls.

## Output

Returns a sessionId (Browserbase session ID string) that the agent uses in all subsequent StableBrowser API calls to interact with the browser session.

## Example request

```json
{
 "sessionId": ""
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "sessionId": {
   "type": "string",
   "description": "Optional session ID to use/reuse. If not provided or invalid, a new session is created."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/www-stablebrowser-dev-3fc7bd75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.stablebrowser.dev](https://www.zero.xyz/host/www.stablebrowser.dev/llms.txt)