{
  "title": "Thanos API Resource Structures",
  "description": "Documents the data structures used by Thanos Query, Store, Ruler, Receive, and Compact HTTP APIs.",
  "version": "0.35.0",
  "structures": {
    "QueryResponse": {
      "description": "Standard response envelope for Prometheus-compatible query results.",
      "fields": {
        "status": "enum: success | error — query outcome",
        "data.resultType": "enum: matrix | vector | scalar | string — result format",
        "data.result": "array — result items (structure depends on resultType)",
        "warnings": "array<string> — non-fatal warnings from partial responses or store issues",
        "errorType": "string — error category (only present on error)",
        "error": "string — human-readable error message (only present on error)"
      }
    },
    "VectorResult": {
      "description": "A single time series value at an instant (from instant query).",
      "fields": {
        "metric": "map<string,string> — label set identifying the time series",
        "value": "array[timestamp, string_value] — single [timestamp, value] pair"
      }
    },
    "MatrixResult": {
      "description": "A time series with multiple values over a range (from range query).",
      "fields": {
        "metric": "map<string,string> — label set identifying the time series",
        "values": "array of [timestamp, string_value] pairs"
      }
    },
    "StoreInfo": {
      "description": "Information about a connected Thanos store endpoint.",
      "fields": {
        "name": "string — store endpoint address or name",
        "lastCheck": "datetime — last health check timestamp",
        "lastError": "string|null — last error from this store",
        "labelSets": "array of map<string,string> — external labels advertised by the store",
        "minTime": "int64 (milliseconds) — oldest data available",
        "maxTime": "int64 (milliseconds) — newest data available",
        "storeType": "enum: sidecar | store | rule | receive | debug | unknown"
      }
    },
    "AlertingRule": {
      "description": "A Prometheus alerting rule evaluated by Thanos Ruler.",
      "fields": {
        "type": "literal: alerting",
        "name": "string — rule name",
        "query": "string — PromQL expression",
        "duration": "float — pending duration in seconds",
        "labels": "map<string,string> — extra labels",
        "annotations": "map<string,string> — annotation key-values",
        "alerts": "array<Alert> — currently firing/pending alerts",
        "health": "string — rule health status",
        "state": "enum: firing | pending | inactive"
      }
    },
    "RecordingRule": {
      "description": "A Prometheus recording rule evaluated by Thanos Ruler.",
      "fields": {
        "type": "literal: recording",
        "name": "string — metric name for recorded series",
        "query": "string — PromQL expression",
        "labels": "map<string,string> — extra labels",
        "health": "string — rule health status"
      }
    },
    "Alert": {
      "description": "A currently active alert instance.",
      "fields": {
        "labels": "map<string,string> — alert labels",
        "annotations": "map<string,string> — annotation values",
        "state": "enum: firing | pending",
        "activeAt": "datetime — when alert became active",
        "value": "string — current metric value"
      }
    },
    "ActiveTarget": {
      "description": "A Prometheus scrape target discovered and tracked by Thanos.",
      "fields": {
        "discoveredLabels": "map<string,string> — labels from service discovery",
        "labels": "map<string,string> — labels after relabeling",
        "scrapePool": "string — scrape configuration pool name",
        "scrapeUrl": "string — URL being scraped",
        "globalUrl": "string — global URL exposed externally",
        "lastError": "string — last scrape error",
        "lastScrape": "datetime — last successful scrape",
        "lastScrapeDuration": "float — duration in seconds",
        "health": "enum: up | down | unknown"
      }
    }
  }
}