# Carbon Cashmere ML Model Performance Leaderboard

> Carbon Cashmere ML Model Performance Leaderboard is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Returns a 180-day shadow-prediction performance overview for the champion ML model (v3_tsfresh) across up to 33 cryptocurrencies, ranked by prediction accuracy and edge over coinflip.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/model-performance
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-2b6e219b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PrPR9W2DbnoO1NnN60EUy

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 api-carbon-cashmere-de-2b6e219b
```

Example prompt: Show me the Carbon Cashmere ML model performance leaderboard — I want to see which coins the v3_tsfresh champion model predicts best over the last 180 days, ranked by accuracy and edge over coinflip.

## When to prefer this

Use this endpoint when you need a high-level benchmark of ML model accuracy across many coins over a long lookback window, particularly to identify which assets are most predictable. Prefer this over live signal endpoints when you want historical model validation data rather than a current trading signal.

## Known failure modes

- Insufficient data: coin excluded if fewer than 30 prediction samples
- Stale or unavailable shadow prediction data may return cached or null results
- Network/service downtime returns a non-200 HTTP error
- Some coins may appear in summary counts but have truncated detail in per-coin performance

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

A JSON object containing: summary stats (average best accuracy, count of coins above/below coinflip), list of models tracked, coins coverage count, and a per-coin breakdown with total prediction samples, accuracy rate, and edge vs coinflip in basis points for each cryptocurrency.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "_meta": {
   "disclaimer": "Informational research data only — not investment advice."
  },
  "lookback_days": 180,
  "summary_stats": {
   "avg_best_accuracy": 0.6123,
   "coins_above_coinflip": 15,
   "coins_below_coinflip": 10
  },
  "coins_coverage": 25,
  "models_tracked": [
   "v3_tsfresh"
  ],
  "per_coin_performance": {
   "BTC": {
    "v3_tsfresh": {
     "total": 753,
     "accuracy": 0.6228,
     "edge_vs_coinflip_bps": 1228
    }
   }
  },
  "top_performing_coins": [
   {
    "coin": "BTC",
    "edge_bps": 1458,
    "best_accuracy": 0.6458
   }
  ],
  "min_samples_per_model": 30
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-2b6e219b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)