# Mecker Capital Basis Trade Spread-APR History

> Mecker Capital Basis Trade Spread-APR History is a paid API for AI agents from api.meckercapital.com, paid per call via x402, $0.250000/call, status unknown (last checked 2026-09-14).

Returns a historical time series of spread-APR for a single asset's basis trade (Extended Exchange vs Hyperliquid), with hourly or daily aggregation and configurable lookback up to 30 days.

## Facts

- Endpoint: GET https://api.meckercapital.com/v1/basis/signal/:asset/history
- Price: $0.250000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-meckercapital-com-29ad41bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i7UR4VoyKnYrKLBssykjK

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-29ad41bc
```

Example prompt: Show me the hourly spread-APR history for ETH's basis trade between Extended and Hyperliquid over the last 14 days so I can calibrate my funding-rate arbitrage strategy.

## When to prefer this

Use this endpoint when you need historical time-series data of the funding rate spread-APR for a specific asset's basis trade between Extended Exchange and Hyperliquid perpetuals — ideal for charting APR evolution over time, backtesting entry/exit timing, or calibrating a delta-neutral cross-venue funding arbitrage strategy. Prefer this over the current-signal endpoint when you need historical context rather than a single real-time reading.

## Known failure modes

- Invalid or unsupported asset symbol returns an error
- lookback_days outside range 1-30 returns a validation error
- Invalid interval value (not '1h' or '1d') returns a validation error
- Payment not included or insufficient results in HTTP 402 Payment Required
- No data available for the requested asset/interval combination returns empty points array

## How this service works

Historical spread-APR time series for one asset's basis trade (Extended × Hyperliquid). Hourly or daily aggregation, configurable lookback. Use for charting and calibrating your own funding-rate arbitrage strategy on perpetual futures.

## Output

Returns a JSON object containing the asset symbol, interval type (1h or 1d), lookback_days, and an array of time-series data points each representing the spread-APR at that timestamp for the cross-venue basis trade between Extended Exchange and Hyperliquid perpetuals.

## 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"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "asset"
     ],
     "properties": {
      "asset": {
       "type": "string"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "interval": {
       "enum": [
        "1h",
        "1d"
       ],
       "type": "string"
      },
      "lookback_days": {
       "type": "integer",
       "maximum": 30,
       "minimum": 1
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asset": {
       "type": "string"
      },
      "points": {
       "type": "array",
       "items": {
        "type": "object"
       }
      },
      "interval": {
       "type": "string"
      },
      "lookback_days": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-meckercapital-com-29ad41bc/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)