# PennyRail Market Radar – x402 Trending Intelligence

> PennyRail Market Radar – x402 Trending Intelligence is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.005/call, status down (last checked 2026-10-22).

Returns trending market signals and radar data for the x402 ecosystem, delivered as a machine-readable settlement response over a micropayment-gated API.

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/intel/market.x402-trending--x402-market-radar?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-market-radar-x402-trending-intelligence-9eb7ab68
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZW3Y5sJhGhofd5CMgxFb2

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 pennyrail-market-radar-x402-trending-intelligence-9eb7ab68 -d '<json body>'
```

Example prompt: What are the trending markets and top signals in the x402 ecosystem right now — pull the latest market radar for me.

## When to prefer this

Choose this endpoint when you need real-time or near-real-time trending intelligence specifically for the x402 protocol ecosystem, and you are operating in a micropayment-capable agent context (x402 protocol with USDC). Prefer this over generic crypto trend APIs when your use case is scoped to x402 markets and you want machine-readable settlement-ready output at very low per-call cost ($0.005 USDC).

## Known failure modes

- Payment not included or insufficient USDC — 402 Payment Required response
- Malformed input object — 400 Bad Request
- Service unavailable on Vercel cold start — 503 or timeout
- Empty or minimal trending data if x402 market activity is low
- Opaque response schema makes downstream parsing brittle

## How this service works

Machine-readable settlement service

## Output

A JSON object containing trending market signals, ranked assets or market categories, and radar-style intelligence data specific to the x402 ecosystem — exact fields vary but the response is open-schema and may include trend scores, asset identifiers, volume indicators, and momentum metrics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-market-radar-x402-trending-intelligence-9eb7ab68/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)