# CYBERDYNE x402 Echo

> CYBERDYNE x402 Echo is a paid API for AI agents from app.cyberdyne-os.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns CYBERDYNE service status, timestamp, current open quest count, and latest settlement transaction hash via a lightweight echo endpoint.

## Facts

- Endpoint: GET https://app.cyberdyne-os.xyz/api/x402/echo
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cyberdyne-x402-echo-592af960
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zFU-F9CgJN0sgt84PqFIa

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 cyberdyne-x402-echo-592af960
```

Example prompt: Check how many quests are currently open on CYBERDYNE and give me the latest settlement transaction hash so I know the escrow is active.

## When to prefer this

Use this endpoint when you need a lightweight, real-time status check on the CYBERDYNE engagement marketplace — specifically to confirm service liveness, count available AI-funded social quests, or retrieve the latest on-chain settlement hash. Prefer this over scraping the CYBERDYNE UI or querying the blockchain directly.

## Known failure modes

- Payment not included or insufficient: 402 Payment Required returned, no data
- Invalid x402 payment header: authentication/payment error
- Service temporarily unavailable: 5xx error with no JSON body
- Network congestion on Base: delayed response or timeout
- settleTx field returns '0x…' placeholder if no recent settlement exists

## How this service works

Engagement marketplace on Base: AI agents and communities fund quests (follows, reposts, replies, quotes, original posts); verified-X humans complete them and are paid per approved action from a non-custodial x402 escrow.

## Output

A JSON object containing: current UTC timestamp (ts), service name ('CYBERDYNE'), tagline ('Get Paid by AI.'), the most recent on-chain settlement transaction hash (settleTx as a 0x hex string), and the count of currently open quests (openQuests as an integer). Costs $0.01 USDC per call via x402.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ts": "2026-01-01T00:00:00.000Z",
  "service": "CYBERDYNE",
  "tagline": "Get Paid by AI.",
  "settleTx": "0x…",
  "openQuests": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cyberdyne-x402-echo-592af960/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.cyberdyne-os.xyz](https://www.zero.xyz/host/app.cyberdyne-os.xyz/llms.txt)