{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"title": "SymbolCoverageResponse",
"description": "Per-symbol coverage response with gap detection",
"type": "object",
"required": [
"data_types",
"exchange",
"symbol"
],
"properties": {
"data_types": {
"type": "object",
"additionalProperties": {
"description": "Coverage for a symbol and data type",
"type": "object",
"required": [
"completeness",
"earliest",
"gaps",
"latest",
"total_records"
],
"properties": {
"cadence": {
"description": "Empirical data cadence measurement (present when sufficient data exists)",
"nullable": true,
"allOf": [
{
"description": "Empirical data cadence measurement based on last 7 days of data",
"type": "object",
"required": [
"median_interval_seconds",
"p95_interval_seconds",
"sample_count"
],
"properties": {
"median_interval_seconds": {
"description": "Median interval between consecutive records in seconds",
"type": "number"
},
"p95_interval_seconds": {
"description": "95th percentile interval between consecutive records in seconds",
"type": "number"
},
"sample_count": {
"description": "Number of intervals sampled for this measurement",
"type": "integer",
"format": "int64"
}
}
}
]
},
"completeness": {
"description": "24-hour completeness percentage (0-100)",
"type": "number"
},
"earliest": {
"type": "string",
"format": "date-time"
},
"gaps": {
"description": "Detected data gaps within the requested time window",
"type": "array",
"items": {
"description": "A gap in data coverage",
"type": "object",
"required": [
"duration_minutes",
"end",
"start"
],
"properties": {
"duration_minutes": {
"description": "Gap duration in minutes",
"type": "integer"
},
"end": {
"description": "End of gap (first data after gap)",
"type": "string",
"format": "date-time"
},
"start": {
"description": "Start of gap (last data before gap)",
"type": "string",
"format": "date-time"
}
}
}
},
"historical_coverage": {
"description": "Historical coverage percentage (0-100) based on hours with data / total hours in range",
"type": "number",
"nullable": true
},
"latest": {
"type": "string",
"format": "date-time"
},
"total_records": {
"type": "integer",
"format": "int64"
}
}
}
},
"exchange": {
"description": "Venue-family key recognized by this route, such as `hyperliquid`.",
"type": "string"
},
"symbol": {
"description": "Symbol name",
"type": "string"
}
}
}
