# Carbon & Cashmere Mantis Track Record API

> Carbon & Cashmere Mantis Track Record API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns aggregate and per-asset track record statistics for ML signal models, including hit rates, predictive edge classification, and prediction counts over a rolling 30-day window.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/mantis-track-record
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-mantis-track-record-api-c443ff25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DW8DwRruwLECa6ThyI3u-

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 carbon-cashmere-mantis-track-record-api-c443ff25
```

Example prompt: Pull the Carbon & Cashmere mantis track record — I want to see which crypto assets are classified as predictive vs anti-predictive and what the overall hit rate looks like across all coins over the last 30 days.

## When to prefer this

Use this endpoint when you need a rolled-up, portfolio-wide view of signal model accuracy across many crypto assets, rather than per-coin or per-model drill-downs. Prefer this over per-asset endpoints when evaluating which coins to trust with signal-driven strategies or screening for edge at a glance.

## Known failure modes

- No assets meet the minimum sample threshold — returns empty by_asset array
- Upstream data pipeline delay causes stale or missing stats
- Payment not attached or insufficient — 402 Payment Required
- Rate limiting if called excessively — 429 Too Many Requests
- Service unavailable during maintenance — 503

## How this service works

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

## Output

Returns a JSON object with aggregate stats (total hits, overall hit rate, count of predictive/anti-predictive/near-baseline assets, total predictions) and a per-asset breakdown including edge classification (predictive, anti-predictive, near-baseline), hit count, hit rate, average absolute return percentage, and number of classifiable predictions. Filtered by minimum sample size of 100 and a 30-day lookback.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "stats": {
   "hits_total": 31480,
   "assets_returned": 28,
   "overall_hit_rate": 0.475,
   "assets_predictive": 4,
   "predictions_total": 66280,
   "assets_near_baseline": 18,
   "assets_anti_predictive": 6
  },
  "filter": {
   "min_samples": 100,
   "lookback_days": 30
  },
  "by_asset": [
   {
    "edge": "predictive",
    "hits": 1256,
    "asset": "AAVE",
    "hit_rate": 0.5322,
    "avg_abs_return_pct": 0.5358,
    "predictions_classifiable": 2360
   },
   {
    "edge": "anti-predictive",
    "hits": 604,
    "asset": "BGB",
    "hit_rate": 0.2547,
    "avg_abs_return_pct": 0.485,
    "predictions_classifiable": 2371
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-mantis-track-record-api-c443ff25/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)