# Carbon Cashmere Crypto Rotation Metrics

> Carbon Cashmere Crypto Rotation Metrics is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns cross-sectional rotation metrics for crypto assets including top-10 gainers/losers by z-normalized returns, sector-level attribution, and rotation velocity over 7d/30d/90d periods.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/rotation
- Price: $0.01/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-61cee60b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_L8JEBmbL9SJL8JdmXMETW

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-61cee60b
```

Example prompt: Show me the current crypto rotation metrics for all coins over the last 30 days — I want to see which sectors are gaining, the top 10 gainers and losers by z-normalized return, and how fast capital is rotating between sectors.

## When to prefer this

Use this endpoint when you need quantitative cross-sectional rotation analysis across the crypto market — specifically when you want z-score normalized rankings, sector-level attribution, and a velocity metric for how fast rankings are changing. Prefer this over simple price APIs when the question is about relative performance, market rotation dynamics, or sector momentum rather than raw prices.

## Known failure modes

- Invalid period parameter returns error
- Invalid universe parameter returns error
- Payment failure (402) if x402 USDC payment not provided
- Upstream data unavailability may return 503 or stale data
- Rate limiting if too many requests in short window

## How this service works

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

## Output

Returns a JSON object containing: the universe queried (core or all), the period, number of coins analyzed, top-10 gainers and losers arrays ranked by z-normalized returns, a sector_rotation object with attribution across L1/DeFi/Meme/Infrastructure/Privacy/Payments/RWA/Exchange/Other categories, and a rotation_velocity number (mean absolute rank-change over 7 days).

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "period": "30d"
  }
 }
}
```

## 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."
  },
  "period": "30d",
  "n_coins": 32,
  "universe": "core",
  "top_losers": [
   {
    "z": -1.9,
    "coin": "AVAX",
    "rank": 32,
    "return_pct": -18.3
   }
  ],
  "top_gainers": [
   {
    "z": 2.3,
    "coin": "SOL",
    "rank": 1,
    "return_pct": 42.1
   }
  ],
  "sector_rotation": {
   "L1": {
    "avg_return": 12.4,
    "rank_delta_7d": 3
   }
  },
  "rotation_velocity": 4.2
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-61cee60b/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)