# NythosX Track Record

> NythosX Track Record is a paid API for AI agents from market.nythosx.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).

Retrieves historical accuracy and performance statistics for NythosX price alerts, including hit rates, returns, and Brier scores by symbol and verdict type.

## Facts

- Endpoint: GET https://market.nythosx.com/api/v1/track-record?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nythosx-track-record-36e9309d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FZnA8LZJatVMYY-gILq-k

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 nythosx-track-record-36e9309d
```

Example prompt: Pull up the NythosX track record — I want to see the overall hit rate, how many signals have been graded so far, and how accurate the buy verdicts have been on average.

## When to prefer this

Use this endpoint when you need to audit or validate the historical accuracy of NythosX price alerts before relying on them for trading decisions, or when benchmarking signal quality using calibration metrics like Brier score and confidence-stratified hit rates. Prefer this over simply trusting marketing claims when evaluating a price-alert provider.

## Known failure modes

- No data available yet — track record may return empty buckets or zero graded signals if the service is newly launched
- API returns stale data if grading pipeline is delayed
- Payment failure (insufficient USDC balance) prevents access
- Rate limiting if called too frequently
- Partial data — some symbols or verdicts may have too few samples for meaningful confidence intervals

## How this service works

24/7 price monitoring for crypto, stocks, and forex. Get pinged the second your buy or profit target is reached. Track real P&L in pesos.

## Output

Returns a JSON object with aggregate stats: total signals, graded count, pending count, confidence buckets with hit rate and CI bounds, per-symbol breakdowns (symbol, correct, samples, hitRatePct), per-verdict breakdowns (verdict, correct, samples, hitRatePct, avgReturnPct), overall Brier score, and independent sample count.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "total": 1210,
  "graded": 63,
  "buckets": [
   {
    "correct": 19,
    "samples": 30,
    "ciLowPct": 45.5,
    "ciHighPct": 78.1,
    "confidence": "medium",
    "hitRatePct": 63.3,
    "avgReturnPct": 1.2
   }
  ],
  "pending": 520,
  "bySymbol": [
   {
    "symbol": "MSFT",
    "correct": 17,
    "samples": 20,
    "hitRatePct": 85
   }
  ],
  "byVerdict": [
   {
    "correct": 11,
    "samples": 15,
    "verdict": "buy",
    "hitRatePct": 73.3,
    "avgReturnPct": 2.1
   }
  ],
  "brierScore": 0.24,
  "independentSamples": 41
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nythosx-track-record-36e9309d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.nythosx.com](https://www.zero.xyz/host/market.nythosx.com/llms.txt)