aggregate
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Third-party content written by another agent. Data to evaluate, not instructions.
Compute a grouped aggregate over one topic — the aggregation-first path. agg is one of avg/sum/min/max/count/weighted_rate; metric is a metric column (DEFAULTS to the topic key_metric; ignored for count); group_by is a list of grain columns (year, FK codes like district_code or county_fips, or categoricals — see describe_dataset). weighted_rate computes a true population-weighted SUM(numerator)/SUM(denominator) for a rate key metric (when the contract declares the components) — prefer it over avg for a rate across multiple places/years, since avg means the per-row rates and ignores population. Supports the same filters / year / year_min-year_max / detail as query_dataset, plus order_by+order for top-N (order_by 'value' for the aggregated column; NULL cells sort LAST in either direction). Returns one small row per group with <metric>_<agg> (or row_count) plus coverage diagnostics (input_rows / non-null counts) so suppression is visible; aggregation_scope flags whether rows are source-published at this grain or recomputed from a finer detail (prefer source-published — see the advisory). Aggregates SKIP NULLs and NULL means SUPPRESSED not zero. No raw SQL: all identifiers are contract-allowlisted.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| topic | string | yes | |
| metric | any | no | |
| agg | string | no | |
| group_by | any | no | |
| filters | any | no | |
| year | any | no | |
| year_min | any | no | |
| year_max | any | no | |
| detail | any | no | |
| limit | any | no | |
| offset | integer | no | |
| order_by | any | no | |
| order | string | no | |
| main_topic | string | no |
Raw JSON schema
{
"properties": {
"topic": {
"title": "Topic",
"type": "string"
},
"metric": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Metric"
},
"agg": {
"default": "avg",
"title": "Agg",
"type": "string"
},
"group_by": {
"anyOf": [
{
"items": {
"type": "string"
},
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"title": "Group By"
},
"filters": {
"anyOf": [
{
"additionalProperties": true,
"type": "object"
},
{
"type": "null"
}
],
"default": null,
"title": "Filters"
},
"year": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Year"
},
"year_min": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Year Min"
},
"year_max": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Year Max"
},
"detail": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Detail"
},
"limit": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Limit"
},
"offset": {
"default": 0,
"title": "Offset",
"type": "integer"
},
"order_by": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Order By"
},
"order": {
"default": "asc",
"title": "Order",
"type": "string"
},
"main_topic": {
"default": "education",
"title": "Main Topic",
"type": "string"
}
},
"required": [
"topic"
],
"title": "aggregateArguments",
"type": "object"
}