# Cryptyx Asset Metric Health Grades

> Cryptyx Asset Metric Health Grades is a paid API for AI agents from cryptyx.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns per-asset metric health grades for a given crypto symbol, diagnosing which metrics actually work on that specific asset via TS vs CS grade divergence, per-metric information coefficient, and hit rate.

## Facts

- Endpoint: GET https://cryptyx.ai/api/asset/metric-health
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cryptyx-asset-metric-health-grades-fe7509b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4q55O3t4xrk4fCmGKZW2i

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 cryptyx-asset-metric-health-grades-fe7509b9
```

Example prompt: Can you pull the metric health grades for ETH on Cryptyx with a 30-day horizon — I want to see which metrics actually have good IC and hit rates specifically for that asset, not just universe averages?

## When to prefer this

Use this endpoint when you need to diagnose which metrics are genuinely predictive for a specific asset, rather than universe-wide averages. Prefer this over /asset/top-predictors when you want full diagnostic detail (IC, hit rate, TS vs CS grade divergence) rather than a ranked list. Best suited for building asset-specific signal selection logic or validating whether a metric is worth trusting for a particular token.

## Known failure modes

- Missing required 'symbol' parameter returns 400 error
- Invalid or unrecognized symbol returns empty or error response
- Invalid horizon value (not 7d, 14d, or 30d) may return 400 or default to 14d
- Payment not processed (x402) results in 402 Payment Required
- Rate limiting or service unavailability returns 429 or 503

## How this service works

Per-asset metric health grades for one symbol — TS vs. CS grade divergence, per-metric ts_ic, ts_hit_rate. Answers "which metrics actually work on THIS asset", not just the universe average. Companion to /asset/top-predictors which ranks; this endpoint diagnoses. Coverage: pass any asset in the CRYPTYX 200+ tracked universe (BTC, ETH, SOL, top-cap + long-tail).

## Output

Returns a set of per-metric health grades for the requested asset, including TS (time-series) vs CS (cross-sectional) grade divergence, per-metric time-series information coefficient (ts_ic), and per-metric hit rate (ts_hit_rate), diagnosing which metrics are genuinely predictive for this specific symbol.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Asset symbol (uppercased server-side)"
      },
      "horizon": {
       "type": "string",
       "description": "7d, 14d, or 30d (default 14d)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cryptyx-asset-metric-health-grades-fe7509b9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptyx.ai](https://www.zero.xyz/host/cryptyx.ai/llms.txt)