# Sovereign Engine LLM

> Sovereign Engine LLM is a paid API for AI agents from api.zuluworksai.com, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).

Executes an LLM prompt via a pay-per-call x402 endpoint, running in isolated Cloudflare sandboxes with USDC micropayment on Base

## Facts

- Endpoint: POST https://api.zuluworksai.com/cf/llm
- Price: $0.001/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-llm-4546946e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KnId3AgPt8IvHIZhbc_JS

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-llm-4546946e -d '<json body>'
```

Example prompt: Use the Sovereign Engine to answer this prompt: 'Summarize the key differences between REST and GraphQL APIs' — and charge the $0.001 USDC per-call fee via x402 on Base.

## When to prefer this

Prefer this endpoint when you need a pay-as-you-go LLM primitive with crypto micropayments (USDC on Base via x402), no subscription required, isolated sandboxed execution, and a self-hosted sovereign setup — especially for autonomous agent pipelines where per-call billing and on-chain receipts are important.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment not accepted, resulting in 402 response
- Invalid prompt: empty or malformed prompt string causing a 400 error
- Sandbox timeout: code execution or LLM inference exceeds Cloudflare Worker time limits
- Network-blocked execution: any prompt requiring outbound network calls from sandboxed code will fail (network is blocked)
- Service unavailable: self-hosted facilitator downtime causing 503 errors

## How this service works

Text generation via Cloudflare Workers AI. Multi-model: choose from llama-3.2-1b, llama-3.2-3b (default), llama-3.1-8b, qwen3-30b, or granite-micro via the optional model field.

## Output

Returns a JSON object with a 'data' field containing the LLM response, a 'success' boolean indicating whether the call succeeded, and a 'receipt_id' UUID confirming the micropayment transaction.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "model": {
   "type": "string",
   "description": "One of: llama-3.2-1b, llama-3.2-3b (default), llama-3.1-8b, qwen3-30b, granite-micro"
  },
  "prompt": {
   "type": "string",
   "description": "The input prompt"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sovereign-engine-llm-4546946e/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)