# Mecker Capital Crypto Pair Cointegration Evaluator

> Mecker Capital Crypto Pair Cointegration Evaluator is a paid API for AI agents from api.meckercapital.com, paid per call via x402, $0.100000/call, status unknown (last checked 2026-09-15).

Evaluates a specific crypto perpetual futures pair for cointegration quality and generates a statistical arbitrage trading signal including regime, z-score, signal direction, confidence, and mean-reversion half-life.

## Facts

- Endpoint: GET https://api.meckercapital.com/v1/pairs/evaluate
- Price: $0.100000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-meckercapital-com-3725608e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dz1ne6_DSZg6TqvDcfsbJ

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-meckercapital-com-3725608e
```

Example prompt: Can you evaluate the cointegration quality and trading signal for the SOL-USD and AVAX-USD perpetuals pair — I want to know the regime, z-score, signal direction, and confidence before I put on a stat arb trade?

## When to prefer this

Use this endpoint when you need a deep cointegration quality assessment for a specific crypto pair including regime classification and half-life, rather than just a quick z-score. Prefer this over the bulk signal endpoint when you want focused evaluation and backtest summary for a single pair before committing to a trade.

## Known failure modes

- Invalid or unrecognized ticker symbols — returns error indicating asset not found
- Pair has insufficient cointegration history — returns low-confidence or null regime
- Rate limit or payment failure — returns 402 Payment Required if x402 payment not included
- Network timeout or upstream data unavailability — returns 503 or empty response
- Missing required query parameters asset_a or asset_b — returns 400 validation error

## How this service works

Evaluate a specific crypto pair's cointegration quality and trading signal. Returns regime, z-score, signal direction, and half-life for mean reversion statistical arbitrage on perpetual futures.

## Output

Returns a JSON object containing the pair key, current market regime classification, z-score of the spread, signal direction (long/short/neutral), confidence level, a human-readable recommendation, and optionally a backtest summary with historical performance statistics.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "asset_a",
      "asset_b"
     ],
     "properties": {
      "asset_a": {
       "type": "string",
       "description": "First asset ticker (e.g. SOL-USD)."
      },
      "asset_b": {
       "type": "string",
       "description": "Second asset ticker (e.g. AVAX-USD)."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "regime": {
       "type": "string"
      },
      "signal": {
       "type": "string"
      },
      "z_score": {
       "type": "number"
      },
      "pair_key": {
       "type": "string"
      },
      "confidence": {
       "type": "string"
      },
      "recommendation": {
       "type": "string"
      },
      "backtest_summary": {
       "type": [
        "object",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-meckercapital-com-3725608e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.meckercapital.com](https://www.zero.xyz/host/api.meckercapital.com/llms.txt)