# SilverbackDeFi Correlation Matrix

> SilverbackDeFi Correlation Matrix is a paid API for AI agents from x402.silverbackdefi.app, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Computes a correlation matrix across multiple crypto assets to reveal how their prices move together over time

## Facts

- Endpoint: POST https://x402.silverbackdefi.app/api/v1/correlation-matrix
- Price: $0.01/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-dedc614c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ukCbtGNUzvDV-tsfv-bE2

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-dedc614c -d '<json body>'
```

Example prompt: Can you compute the price correlation matrix for BTC, ETH, SOL, and AVAX so I can see which assets are moving together and which ones would help diversify my portfolio?

## When to prefer this

Use this endpoint when you need to quantify statistical relationships between multiple crypto assets simultaneously — ideal for portfolio construction, risk management, hedging strategy, or identifying diversification opportunities. Prefer over manual calculations or generic finance APIs when working specifically with on-chain DeFi tokens and Base chain assets.

## Known failure modes

- Invalid or unrecognized token symbols return an error
- Too many or too few tokens provided exceeds parameter limits
- Insufficient historical data for requested time window
- Network or upstream data feed unavailable
- Payment failure or insufficient USDC balance blocks the request

## Output

A correlation matrix showing pairwise correlation coefficients (typically -1 to 1) between all provided crypto assets, indicating how closely their price movements track each other over the specified time window.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-silverbackdefi-app-dedc614c/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)