# SilverbackDeFi Top Coins

> SilverbackDeFi Top Coins is a paid API for AI agents from x402.silverbackdefi.app, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).

Returns a ranked list of top-performing or trending cryptocurrency coins with market data

## Facts

- Endpoint: POST https://x402.silverbackdefi.app/api/v1/top-coins
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-silverbackdefi-app-55003292
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wjTPbXzpzS-C1Dh58EfjP

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 x402-silverbackdefi-app-55003292 -d '<json body>'
```

Example prompt: What are the top 10 trending cryptocurrencies right now by market cap, including their price and 24-hour change?

## When to prefer this

Use this endpoint when you need a current snapshot of top-ranked or trending crypto coins with market metrics. Prefer this over individual coin lookups when the user wants a leaderboard-style view of the market. Pairs well with the technical analysis and whale monitoring endpoints on the same platform for deeper DeFi research on Base chain.

## Known failure modes

- Invalid filter parameters return 400 error
- Payment of 0.005 USDC not received returns 402 Payment Required
- Downstream market data source unavailable returns 503
- Rate limiting if called too frequently returns 429
- Invalid JSON body returns 400

## Output

A ranked list of top cryptocurrencies including coin names, symbols, current prices, market capitalizations, trading volumes, and price change percentages over recent periods.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-silverbackdefi-app-55003292/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.silverbackdefi.app](https://www.zero.xyz/host/x402.silverbackdefi.app/llms.txt)