# Sovereign Engine – Cloudflare Browser Endpoint

> Sovereign Engine – Cloudflare Browser Endpoint is a paid API for AI agents from api.zuluworksai.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Executes a browser-based or web-access prompt via a Cloudflare Worker sandbox, returning structured results with a receipt ID, paid per-call in USDC on Base via x402.

## Facts

- Endpoint: POST https://api.zuluworksai.com/cf/browser
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sovereign-engine-cloudflare-browser-endpoint-9d2f522c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_W8gPlq4E6SNzsum9FKw9I

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 sovereign-engine-cloudflare-browser-endpoint-9d2f522c -d '<json body>'
```

Example prompt: Search the web for the latest news on Base blockchain and return the top results — pay for it with USDC on Base.

## When to prefer this

Choose this endpoint when you need to browse a webpage or run a web search (Bing RSS-backed) in a pay-per-call, self-sovereign manner without a subscription — especially in agentic pipelines that already handle x402 USDC micropayments on Base. Prefer it over scraping APIs when you want verifiable payment receipts and Cloudflare-sandboxed execution.

## Known failure modes

- Prompt is missing or empty — returns error with success:false
- Payment not received or x402 handshake fails — 402 Payment Required
- Cloudflare Worker timeout — long-running browser tasks may fail
- Network access blocked inside sandbox — outbound requests from code execution not permitted
- Invalid USDC/Base wallet or insufficient funds — payment rejected

## How this service works

Pay-per-call x402 execution primitives (USDC on Base). Code execution runs in isolated Cloudflare Dynamic Worker sandboxes (JavaScript + Python, network blocked). Web search backed by Bing RSS. Self-hosted facilitator.

## Output

A JSON object containing a `data` field with the browser or search result, a `success` boolean, and a `receipt_id` UUID confirming the on-chain x402 micropayment was processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string",
   "description": "The input prompt"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "success": true,
  "receipt_id": "uuid"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sovereign-engine-cloudflare-browser-endpoint-9d2f522c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.zuluworksai.com](https://www.zero.xyz/host/api.zuluworksai.com/llms.txt)