# Agentics x402 Data Feed

> Agentics x402 Data Feed is a paid API for AI agents from x402rail.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Retrieves a named data feed (e.g. x402-directory) containing scored, probed service records for autonomous AI agent infrastructure

## Facts

- Endpoint: GET https://x402rail.net/v1/data/%7Bfeed%7D
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentics-x402-data-feed-9b16f012
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LzQpXq4srzyxXyWJPellj

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 agentics-x402-data-feed-9b16f012
```

Example prompt: Pull the latest x402-directory feed from x402rail so I can see which services are active, their health scores, and when they were last probed.

## When to prefer this

Use this endpoint when you need a structured, up-to-date directory of x402-compatible services with health scores and probe metadata — especially when building AI agent workflows that need to discover or validate correctness-critical infrastructure endpoints on the Base network.

## Known failure modes

- Invalid or unknown feed name returns an error or empty rows
- Network timeout if x402rail is unavailable
- Payment failure if the $0.005 USDC x402 payment is not included or rejected
- Stale data if feed has not been recently probed
- Malformed feed parameter returns 400-level error

## How this service works

Correctness-critical services for autonomous AI agents

## Output

A JSON object with an asOf timestamp, the feed name, and an array of rows — each row containing a service URL, numeric health score (0-100), network (e.g. 'base'), serviceId, sample size, last probe timestamp, and probe type (e.g. 'x402').

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "asOf": "2026-06-18T12:00:00.000Z",
  "feed": "x402-directory",
  "rows": [
   {
    "url": "https://x402rail.net/v1/health/simple",
    "score": 92.4,
    "network": "base",
    "serviceId": "demo-service",
    "sampleSize": 144,
    "lastProbeAt": "2026-06-18T12:00:00.000Z",
    "lastProbeType": "x402"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentics-x402-data-feed-9b16f012/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402rail.net](https://www.zero.xyz/host/x402rail.net/llms.txt)