# Automaton-Sovereign Echo API

> Automaton-Sovereign Echo API is a paid API for AI agents from api.automaton-sovereign.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Echoes back input data via a simple GET request, returning the submitted query parameters as a structured response

## Facts

- Endpoint: GET https://api.automaton-sovereign.workers.dev/v1/echo?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/automaton-sovereign-echo-api-f06d57f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l1ysgSuxlpxGHNp9pBn8f

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 automaton-sovereign-echo-api-f06d57f0
```

Example prompt: Call the Automaton-Sovereign echo endpoint with my test parameters and show me what gets reflected back.

## When to prefer this

Choose this endpoint when you need a simple, low-cost echo/reflection service to test API connectivity, validate x402 micropayment flows, or confirm query parameter passthrough in a paid API context. It is particularly useful for developers integrating x402-based payment systems who need a cheap, reliable endpoint to verify their client-side payment logic works before connecting to more expensive or complex endpoints.

## Known failure modes

- Payment failure: x402 payment not completed or insufficient USDC balance, resulting in 402 response
- Invalid method: only GET is supported, other HTTP methods return an error
- Malformed query parameters: unexpected parameter types may be ignored or cause parsing errors
- Service unavailable: Cloudflare Workers runtime issues causing 5xx responses
- Rate limiting: excessive requests may be throttled

## How this service works

Automaton-Sovereign Value API call

## Output

Returns an echo of the submitted input — typically a JSON object containing the reflected query parameters and metadata confirming the request was received and processed.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object"
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/automaton-sovereign-echo-api-f06d57f0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.automaton-sovereign.workers.dev](https://www.zero.xyz/host/api.automaton-sovereign.workers.dev/llms.txt)