{
  "name": "The Santiago Index",
  "description": "Weekly readings of Builder Momentum and Dependency Creep (0 to 100), each the weighted average of six category scores (1 to 10) assessed by the AETHER Council.",
  "url": "https://aethercouncil.com/santiago-index",
  "creator": "AETHER Council",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "AETHER Council. The Santiago Index [Data set]. https://aethercouncil.com/santiago-index",
  "dateModified": "2026-10-19",
  "temporalCoverage": "2026-03-09/2026-10-19",
  "weights": {
    "labor": 25,
    "education": 20,
    "platform": 20,
    "builder": 15,
    "policy": 10,
    "sentiment": 10
  },
  "formula": "meter = sum(category_score x weight) / 10, category scores 1 to 10, weights sum to 100",
  "readings": [
    {
      "date": "2026-03-09",
      "week": "2026-W11",
      "builder_momentum": 59,
      "dependency_creep": 48,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 5
        },
        "policy": {
          "builder": 5,
          "dependency": 5
        },
        "builder": {
          "builder": 8,
          "dependency": 3
        },
        "platform": {
          "builder": 7,
          "dependency": 4
        },
        "education": {
          "builder": 4,
          "dependency": 6
        },
        "sentiment": {
          "builder": 5,
          "dependency": 6
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-03-17",
      "week": "2026-W12",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-03-23",
      "week": "2026-W13",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-03-30",
      "week": "2026-W14",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-04-06",
      "week": "2026-W15",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-04-13",
      "week": "2026-W16",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-04-20",
      "week": "2026-W17",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-04-27",
      "week": "2026-W18",
      "builder_momentum": 62,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-05-04",
      "week": "2026-W19",
      "builder_momentum": 62,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
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          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-05-11",
      "week": "2026-W20",
      "builder_momentum": 62,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-05-12",
      "week": "2026-W20",
      "builder_momentum": 62,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-05-13",
      "week": "2026-W20",
      "builder_momentum": 61,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 6,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-05-18",
      "week": "2026-W21",
      "builder_momentum": 50,
      "dependency_creep": 50,
      "scores": {
        "labor": {
          "builder": 5,
          "dependency": 5
        },
        "policy": {
          "builder": 5,
          "dependency": 5
        },
        "builder": {
          "builder": 5,
          "dependency": 5
        },
        "platform": {
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          "dependency": 5
        },
        "education": {
          "builder": 5,
          "dependency": 5
        },
        "sentiment": {
          "builder": 5,
          "dependency": 5
        }
      },
      "methodology_version": "1.0",
      "status": "anomaly",
      "note": "Not a measurement. Every category failed to score that Monday (the run ended in about one second) and the code at the time substituted a neutral 5 for each failed category, giving 50.0 / 50.0. Fixed 2026-10-19: a category that cannot be scored now blocks the reading."
    },
    {
      "date": "2026-05-25",
      "week": "2026-W22",
      "builder_momentum": 61,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
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          "dependency": 7
        },
        "platform": {
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          "dependency": 8
        },
        "education": {
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          "dependency": 5
        },
        "sentiment": {
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          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-06-01",
      "week": "2026-W23",
      "builder_momentum": 61,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 4,
          "dependency": 7
        },
        "builder": {
          "builder": 8,
          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
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          "dependency": 5
        },
        "sentiment": {
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        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-06-08",
      "week": "2026-W24",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
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        },
        "builder": {
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          "dependency": 7
        },
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          "dependency": 8
        },
        "education": {
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        },
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        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-06-15",
      "week": "2026-W25",
      "builder_momentum": 62,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
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          "dependency": 7
        },
        "builder": {
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          "dependency": 7
        },
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          "dependency": 8
        },
        "education": {
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        },
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        }
      },
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    },
    {
      "date": "2026-06-22",
      "week": "2026-W26",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
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        },
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          "dependency": 8
        },
        "education": {
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    },
    {
      "date": "2026-06-29",
      "week": "2026-W27",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
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        },
        "builder": {
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        },
        "platform": {
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        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
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        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-07-06",
      "week": "2026-W28",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
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          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
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        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-07-13",
      "week": "2026-W29",
      "builder_momentum": 63,
      "dependency_creep": 68,
      "scores": {
        "labor": {
          "builder": 6,
          "dependency": 7
        },
        "policy": {
          "builder": 5,
          "dependency": 7
        },
        "builder": {
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          "dependency": 7
        },
        "platform": {
          "builder": 5,
          "dependency": 8
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": ""
    },
    {
      "date": "2026-10-19",
      "week": "2026-W43",
      "builder_momentum": 69.5,
      "dependency_creep": 66,
      "scores": {
        "labor": {
          "builder": 7,
          "dependency": 7
        },
        "policy": {
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          "dependency": 7
        },
        "builder": {
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          "dependency": 7
        },
        "platform": {
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          "dependency": 7
        },
        "education": {
          "builder": 7,
          "dependency": 5
        },
        "sentiment": {
          "builder": 7,
          "dependency": 7
        }
      },
      "methodology_version": "1.0",
      "status": "measurement",
      "note": "First reading after the 13-week outage, on the new council line-up. Published before the needle rule went live."
    }
  ]
}