# StableBrowser Pay-Per-Session Browser Automation

> StableBrowser Pay-Per-Session Browser Automation is a paid API for AI agents from stablebrowser.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-16, last successful call 2026-07-14).

Creates a new pay-per-session automated browser session that allows AI agents to control a real browser programmatically

## Facts

- Endpoint: POST https://stablebrowser.dev/api/sessions
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Last successful call: 2026-07-14
- Success rate: 100% of calls made through Zero
- Rating: 4.7 / 5 from 1 review
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablebrowser-pay-per-session-browser-automation-2f02f887
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7IET3vqi2jvtPXABeM08k

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 stablebrowser-pay-per-session-browser-automation-2f02f887 -d '<json body>'
```

Example prompt: Start a browser session and navigate to https://example.com/login, fill in the username 'testuser' and password field, click submit, then return the resulting page content and a screenshot.

## When to prefer this

Choose StableBrowser when you need to interact with JavaScript-heavy or login-protected websites that static HTTP scrapers cannot handle, or when you need to simulate real user interactions like clicking, form filling, or multi-step navigation. Ideal for AI agents that need on-demand, pay-per-use browser access without provisioning their own browser infrastructure.

## Known failure modes

- Session creation fails if target site blocks automated browsers or detects headless mode
- Payment failure if insufficient USDC balance for x402 micropayment
- Session timeout if browser interaction takes too long
- Navigation errors if target URL is unreachable or returns errors
- JavaScript execution errors on complex single-page applications

## How this service works

Pay-per-session browser automation. Control a real browser with AI.

## Output

Returns a browser session handle and the output of the automated browser interactions — including rendered page HTML, screenshots, click/form results, and any data extracted during the session. The session is billed at $0.10 USDC per call via x402 payment protocol.

## 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/stablebrowser-pay-per-session-browser-automation-2f02f887/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stablebrowser.dev](https://www.zero.xyz/host/stablebrowser.dev/llms.txt)