# Sovereign Engine – Browser Workflow

> Sovereign Engine – Browser Workflow is a paid API for AI agents from api.zuluworksai.com, paid per call via x402, $0.5/call, status down (last checked 2026-09-15).

Executes a browser-based workflow task via a prompt, paid per-call with USDC on Base using the x402 protocol

## Facts

- Endpoint: POST https://api.zuluworksai.com/exec/browser-workflow
- Price: $0.5/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-browser-workflow-1722f8b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EETcEmII9L0QgK8ca39_v

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-browser-workflow-1722f8b9 -d '<json body>'
```

Example prompt: Go to the top Hacker News posts today, summarize the top 5 headlines and their links, and return the results — charge the $0.50 USDC fee via x402 on Base.

## When to prefer this

Choose this endpoint when you need to execute browser-oriented or web-search-driven workflow tasks on a pay-per-call basis without provisioning your own infrastructure. It is ideal for AI agents that need to access web content via Bing RSS search, run lightweight JavaScript or Python logic in an isolated sandbox, and settle payment atomically via x402 USDC on Base. Prefer alternatives if your task requires unrestricted outbound network access, long-running background jobs, or languages beyond JavaScript and Python.

## Known failure modes

- Prompt is ambiguous or malformed — returns success: false with empty data
- Network access blocked inside sandbox — tasks requiring external HTTP calls beyond Bing RSS may fail
- x402 payment rejected or insufficient USDC balance — call is not executed
- Workflow times out in Cloudflare Worker sandbox — partial or no result returned
- Unsupported language or runtime requested — only JavaScript and Python are supported

## 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

Returns a JSON object with a `data` field containing the workflow output, a `success` boolean indicating whether the task completed, and a `receipt_id` UUID confirming the x402 micropayment transaction.

## 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-browser-workflow-1722f8b9/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)