Aggregate tasks

POST /v1/tasks/aggregate

Count tasks with filtering and grouping. Numeric functions work on numeric task fields and on user fields of suitable types.

Standard fields:

• status — task status (for groupBy; numeric functions make no sense here — it is a categorical code). groupBy: "status" groups by the actual stored status — the status field value in the response, not the virtual meta-axis of filter[status]
• priority — priority (for groupBy)
• responsibleId — responsible person (for groupBy; an identifier)
• groupId — workgroup (for groupBy; an identifier)

All standard aggregatable fields are identifiers or categorical codes, so count and groupBy work on them. For numeric functions (sum/avg/min/max), suitable built-in candidates are timeEstimate (effort estimate in seconds), timeSpentInLogs (time actually spent, in seconds), or user fields. Those two fields are not accepted in groupBy — among the built-in ones, only the four listed above are available there.

Narrowing the result set by status. To count only open/completed tasks, add realStatus (the actual status) to filter: {"filter": {"realStatus": 2}}. filter[status] here is also virtual (the −1/−2/−3 meta-axis), not the number from the response. realStatus itself is filter/sort only — it is not a groupBy dimension: to break down by status use groupBy: "status" (which groups by the actual status, see above).

User fields (UF): UF fields of types integer, double, money — for numeric functions; UF fields of any type — for groupBy. The full list of UF fields for a specific Bitrix24 account is returned in the INVALID_PARAMS error text if you pass a non-existent name.

Request fields (body)

Examples

curl — personal key

curl -X POST "https://vibecode.bitrix24.com/v1/tasks/aggregate" \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "aggregate": [
      { "field": "timeEstimate", "function": "sum" }
    ],
    "groupBy": "status"
  }'

curl — OAuth application

curl -X POST "https://vibecode.bitrix24.com/v1/tasks/aggregate" \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "aggregate": [
      { "field": "timeEstimate", "function": "sum" }
    ],
    "groupBy": "status"
  }'

JavaScript — personal key

const res = await fetch('https://vibecode.bitrix24.com/v1/tasks/aggregate', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    aggregate: [{ field: 'timeEstimate', function: 'sum' }],
    groupBy: 'status',
  }),
})

const { success, data } = await res.json()
console.log('Total tasks:', data.count)
console.log('By status:', data.groups)

JavaScript — OAuth application

const res = await fetch('https://vibecode.bitrix24.com/v1/tasks/aggregate', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    aggregate: [{ field: 'timeEstimate', function: 'sum' }],
    groupBy: 'status',
  }),
})

const { success, data } = await res.json()

To group by several fields, pass an array: "groupBy": ["status", "responsibleId"] (maximum 5).

Other scenarios

Count records — count with field "*", the fastest request without fetching records. Without the aggregate array the result is the same:

{ "aggregate": [{ "field": "*", "function": "count" }] }

How many tasks each responsible person has:

{ "groupBy": "responsibleId" }

Sum over a numeric UF field, broken down by priority:

{
  "aggregate": [{ "field": "UF_CRM_TASK_BUDGET", "function": "sum" }],
  "groupBy": "priority"
}

Response fields

Response example

Response to the main request (aggregate: [{field: "timeEstimate", function: "sum"}] + groupBy: "status"):

{
  "success": true,
  "data": {
    "count": 599,
    "aggregates": {
      "timeEstimate": { "sum": 54000 }
    },
    "groups": [
      { "status": 2, "count": 247, "aggregates": { "timeEstimate": { "sum": 18000 } } },
      { "status": 5, "count": 341, "aggregates": { "timeEstimate": { "sum": 32400 } } },
      { "status": 3, "count": 7,   "aggregates": { "timeEstimate": { "sum": 2400 } } },
      { "status": 4, "count": 4,   "aggregates": { "timeEstimate": { "sum": 1200 } } }
    ],
    "meta": {
      "totalRecords": 599,
      "recordsProcessed": 599,
      "truncated": false,
      "groupTotal": 4,
      "groupsTruncated": false
    }
  }
}

Without groupBy, the data.groups field is absent from the response.

Error response example

400 — non-existent field:

{
  "success": false,
  "error": {
    "code": "INVALID_PARAMS",
    "message": "Unknown field 'noSuchField'. Available: status, priority, responsibleId, groupId, UF_CRM_TASK_BUDGET, …"
  }
}

Errors

The full list of common API errors — Errors.

Known specifics

count vs numeric functions. count is computed in a single call and works at any volume. sum/avg/min/max load records page by page (maximum 5000) and compute on the API side. For result sets over 5000 — meta.truncated: true, aggregation over the first 5000. For exact counters on large result sets, use count or narrow the filter. The ceiling is not the only reason for this marker: it also appears when fewer records were read than data.count promised, and the size of the gap is reported in data.meta.recordsShortfall.

The truncation marker travels with the number itself. When a response arrives with meta.truncated: true, the marker truncated: true sits inside every field object in data.aggregates and on every element of data.groups, and data.meta.warnings gains a warning with the code AGGREGATE_TRUNCATED. A client that reads only the number itself therefore sees that it was computed over only some of the records. None of these markers appear on a complete response. Full details — Aggregation POST — the 5000-record ceiling.

See also

• List tasks
• Search tasks
• Task fields
• Filtering syntax
• Limits and optimization