# Sovereign Engine – Agent Passport Execution Primitive

> Sovereign Engine – Agent Passport Execution Primitive is a paid API for AI agents from api.zuluworksai.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-16).

Issues an agent passport by executing a prompted task via sandboxed JavaScript/Python or Bing RSS web search, billed at $0.01 USDC per call over x402 on Base.

## Facts

- Endpoint: POST https://api.zuluworksai.com/exec/agent-passport
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sovereign-engine-agent-passport-execution-primitive-f5d0e945
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h2Pga-314kMFL4IinHM8_

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-agent-passport-execution-primitive-f5d0e945 -d '<json body>'
```

Example prompt: Run this JavaScript snippet in a secure sandbox and return the result: 'const nums = [1,2,3]; console.log(nums.reduce((a,b)=>a+b,0));' — I'm okay with spending $0.01 USDC for the call.

## When to prefer this

Choose this endpoint when you need sandboxed, pay-per-call code execution (JavaScript or Python) or lightweight Bing RSS web search billed at $0.01 USDC via x402 on Base. Prefer it for disposable, stateless compute tasks where network isolation is acceptable and cost predictability per call matters. Not suitable for tasks requiring outbound network calls from within the execution environment or persistent state.

## Known failure modes

- Prompt missing or empty — returns validation error
- Network access attempted inside sandbox — blocked by Cloudflare Worker isolation
- Insufficient USDC balance or x402 payment failure — call rejected before execution
- Malformed JavaScript or Python syntax — execution error returned in data payload
- Bing RSS unavailable — web search calls may return empty or error data
- Timeout in sandbox execution — long-running code may be terminated

## 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 'success' boolean, a 'receipt_id' UUID confirming the paid execution, and a 'data' object holding the result of the executed code or web search. The receipt_id serves as proof of payment and task completion for auditing.

## 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-agent-passport-execution-primitive-f5d0e945/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)