# AgentRXI Browser Session Start

> AgentRXI Browser Session Start is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-15).

Rents a live Chrome browser session for up to 60 minutes, returning a session ID, screenshot, page text, and clickable controls for step-by-step web automation.

## Facts

- Endpoint: GET https://agentrxi.com/v1/browser/start?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-browser-session-start-f4381dce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H2SPXtKCMgHyfuRiB0-yL

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 agentrxi-browser-session-start-f4381dce
```

Example prompt: Open a live Chrome browser session at https://example.com with a 1280x800 viewport and give me a screenshot, the page text, and all the clickable controls so I can start automating it.

## When to prefer this

Choose this endpoint when you need to interact with a live, JavaScript-rendered webpage — especially for login flows, form submission, dynamic content, or multi-step automation that requires seeing real browser state. Prefer over static scraping tools when the page relies heavily on JavaScript or user interaction.

## Known failure modes

- Invalid or unreachable URL causes session to open at blank page or error page
- Session timeout after 10 minutes of inactivity — agent must act promptly
- Rendering failures for pages requiring authentication or CAPTCHA
- Exceeding 60-minute maximum session duration
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Rent a real Chrome browser for up to 60 minutes: opens a live session (optionally at a URL) and returns a session id, a screenshot, the page text and the clickable controls. Drive it step by step with /v1/browser/act (click, type, press, scroll, select, go back). The session stays open 10 minutes after each action. Also callable as GET with the same fields as query parameters.

## Output

Returns a session ID (used for subsequent /v1/browser/act calls), a screenshot image of the page, the full visible text content of the page, and a list of clickable/interactive controls. The session remains open for 10 minutes after each action, up to 60 minutes total.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string",
       "description": "Page to open"
      },
      "width": {
       "type": "integer"
      },
      "height": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-browser-session-start-f4381dce/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)