{
  "tool_id": "pair-trading-tester",
  "slug": "pair-trading-tester",
  "path": "/pair-trading-tester/",
  "mode": "client_side",
  "usage": "Client-side tester. Open https://aifinhub.io/pair-trading-tester/ and paste a two-asset price CSV. Engle-Granger + ADF + OU half-life + z-score all in-browser.",
  "methodology": "https://aifinhub.io/methodology/pair-trading-tester/",
  "sample_input": {
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    "b": [
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    "lags": 1,
    "z_window": 30
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  "input_schema": {
    "type": "object",
    "properties": {
      "tool": {
        "type": "string"
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      "a": {
        "type": "array",
        "items": {
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      "b": {
        "type": "array",
        "items": {
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      "lags": {
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      "z_window": {
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      "a",
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  "output_schema": {
    "type": "object",
    "properties": {
      "hedge_ratio_beta": {
        "type": "number"
      },
      "ols_r2": {
        "type": "number"
      },
      "adf_t_stat": {
        "type": "number"
      },
      "adf_p_value_band": {
        "type": "string"
      },
      "is_stationary_5pct": {
        "type": "boolean"
      },
      "ou_half_life_days": {
        "type": "number"
      },
      "entry_events": {
        "type": "integer"
      },
      "exit_events": {
        "type": "integer"
      },
      "verdict": {
        "type": "string"
      }
    }
  }
}