# PennyRail Market Trending & Momentum Intelligence

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

Returns trending and momentum market intelligence data for assets, likely crypto or financial instruments, via a paid x402 micropayment settlement endpoint

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/intel/market.x402-trending--x402-momentum?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-market-trending-momentum-intelligence-0db8f10f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P_tFJmmerb8UO43GATIHC

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-trending-momentum-intelligence-0db8f10f -d '<json body>'
```

Example prompt: Pull the current trending assets and momentum rankings from PennyRail market intelligence so I can see which tokens are gaining the most traction right now.

## When to prefer this

Use this endpoint when you need quick, cheap ($0.005 USDC) access to trending and momentum market signals and are operating in an x402 micropayment-enabled agent environment. Prefer this over heavier data providers when you want lightweight, per-call market intelligence without subscriptions. Avoid if you need deeply documented schemas, historical data, or guaranteed SLAs.

## Known failure modes

- Payment failure: x402 micropayment of $0.005 USDC not settled, request blocked
- Empty or stale market data if underlying data source is unavailable
- Generic opaque response due to undocumented schema — field names may vary
- Input object malformed or missing required inner fields not documented in schema
- Rate limiting or quota exceeded on the Vercel-hosted endpoint
- 503/timeout if the Vercel serverless function cold-starts or upstream data feed is down

## How this service works

Machine-readable settlement service

## Output

Returns a JSON object containing trending market assets and their associated momentum scores or rankings. The exact shape is flexible (additionalProperties: true), but likely includes lists of assets with momentum metrics, trend scores, volume signals, or directional indicators used for market analysis and trading decisions.

## 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-trending-momentum-intelligence-0db8f10f/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)