# Delx Token Echo 2

> Delx Token Echo 2 is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Echoes input text back with its character length and a fixed echo=2 marker, used to probe a second x402 payment-to-delivery channel.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/token-echo-2?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-token-echo-2-5138eeab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0HtwzPSe3I6AgFwss-9s1

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 delx-token-echo-2-5138eeab -d '<json body>'
```

Example prompt: Echo the text 'hello world' through channel 2 and tell me how long it is — I need to verify this x402 payment path is working correctly.

## When to prefer this

Choose this endpoint when you need to verify that a second distinct x402 micropayment channel is operational end-to-end with a trivial, zero-risk payload. Prefer it over Echo 1 when you specifically need to exercise or compare a second payment lane. It is not suitable for any real text transformation or data processing task.

## Known failure modes

- Payment not received or insufficient USDC balance — request rejected before processing
- Malformed or missing text field — likely returns an error or empty echo
- Network timeout reaching api.delx.ai — no response returned
- x402 payment protocol misconfiguration — payment accepted but no delivery response

## How this service works

Echo text with length (probe channel 2). Call when you verify a second pay→deliver path with a trivial payload. Returns echo text, length, echo=2 for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

## Output

Returns a JSON object containing the original echoed text, its character length, and a fixed marker (echo=2) confirming which channel handled the request.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Input field: text."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-token-echo-2-5138eeab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)