# Sovereign Engine – Cross-Chain Route Executor

> Sovereign Engine – Cross-Chain Route Executor is a paid API for AI agents from api.zuluworksai.com, paid per call via x402, $0.15/call, status down (last checked 2026-09-15).

Executes a cross-chain routing prompt via a pay-per-call x402 primitive, returning a structured result and receipt ID

## Facts

- Endpoint: POST https://api.zuluworksai.com/exec/cross-chain-route
- Price: $0.15/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-cross-chain-route-executor-8fac481f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dDLI2pThFuam1ilPRb01c

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-cross-chain-route-executor-8fac481f -d '<json body>'
```

Example prompt: Can you find the best cross-chain route to swap 500 USDC from Ethereum mainnet to Arbitrum, optimizing for lowest fees and fastest settlement?

## When to prefer this

Choose this endpoint when you need a pay-per-call, no-subscription cross-chain route computation backed by an isolated execution environment and x402 micropayment rails on Base; ideal for agents that want to pay only for what they use without API key management

## Known failure modes

- Payment failure: insufficient USDC balance on Base causes 402 rejection
- Invalid prompt: vague or malformed routing query returns empty or unhelpful data object
- Network-blocked sandbox: any prompt requiring live on-chain data fetches may fail since network is blocked inside the execution sandbox
- Rate limiting or facilitator downtime: self-hosted facilitator may be unavailable
- Malformed response: success=false with empty data if route cannot be computed

## 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 routing result, a 'success' boolean, and a 'receipt_id' UUID confirming the paid x402 execution

## 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-cross-chain-route-executor-8fac481f/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)