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POST
/
{resource}
/
filter
curl -X POST 'https://api.cloud.blnkfinance.com/transactions/filter?instance_id=YOUR_INSTANCE_ID&page=1&pageSize=20' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
    "filters": [
      { "field": "status", "operator": "eq", "value": "APPLIED" },
      { "field": "currency", "operator": "in", "values": ["USD", "EUR"] }
    ]
  }'

{
  "data": [
    {
      "transaction_id": "txn_c4e70eb8-e4d6-4e04-a2e2-92a43b969e0c",
      "amount": 100.50,
      "currency": "USD",
      "status": "APPLIED",
      "created_at": "2025-01-15T10:00:00.000000000Z"
    }
  ],
  "total": 12,
  "stats": {},
  "total_is_estimate": false,
  "total_source": "exact"
}

Documentation Index

Fetch the complete documentation index at: https://docs.blnkfinance.com/llms.txt

Use this file to discover all available pages before exploring further.

The Filters API lets you retrieve filtered records from a Blnk Core instance through Blnk Cloud. Send a POST request with a JSON filter body to query instance Postgres directly.
Filter endpoints are registered at the Cloud API root (for example, /transactions/filter), not under /data/ or /proxy/. For a step-by-step guide, see Filtering data.

​
Request structure

curl -X POST 'https://api.cloud.blnkfinance.com/transactions/filter?instance_id=YOUR_INSTANCE_ID&page=1&pageSize=20' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
    "filters": [
      { "field": "status", "operator": "eq", "value": "APPLIED" },
      { "field": "currency", "operator": "in", "values": ["USD", "EUR"] }
    ]
  }'
​
Authorization
string
required
Bearer token for an API key or OAuth access token. Requires the data:read scope. Create credentials with the data:read scope in API keys or OAuth clients.
​
instance_id
string
required
Unique identifier of the Blnk Core instance to query. Required on every Filters API request.
​
page
integer
default:"1"
Page number for paginated results.
​
pageSize
integer
Number of records per page. Defaults vary by resource (see endpoints table below).
​
filters
array
required
Array of filter objects. Each object requires field and operator, and optionally value or values.Examples:
  • [{"field": "status", "operator": "eq", "value": "APPLIED"}] — exact match
  • [{"field": "currency", "operator": "in", "values": ["USD", "EUR"]}] — multiple values
  • [{"field": "created_at", "operator": "between", "values": ["2025-01-01T00:00:00Z", "2025-01-31T23:59:59Z"]}]

​
Endpoints

All paths are relative to https://api.cloud.blnkfinance.com.
MethodPathDefault pageSize
POST/ledger/filter30
POST/balances/filter20
POST/transactions/filter20
POST/identities/filter20
POST/reconciliation/filter20
The ledgers endpoint uses /ledger/filter (singular), not /ledgers/filter.
For supported operators and filterable fields, see Filtering data.

​
Response structure

{
  "data": [
    {
      "transaction_id": "txn_c4e70eb8-e4d6-4e04-a2e2-92a43b969e0c",
      "amount": 100.50,
      "currency": "USD",
      "status": "APPLIED",
      "created_at": "2025-01-15T10:00:00.000000000Z"
    }
  ],
  "total": 12,
  "stats": {},
  "total_is_estimate": false,
  "total_source": "exact"
}
​
data
array
required
Array of matching records. Structure varies by resource type.
​
total
integer
required
Total number of matching records.
​
stats
object
Aggregate statistics for the filtered result set. Present on balances, transactions, identities, and reconciliations.
​
total_is_estimate
boolean
Transactions only. When true, the total value is an estimate rather than an exact count.
​
total_source
string
Transactions only. Indicates how the total was computed (for example, "exact" or "estimate").
The Cloud Filters API accepts { "filters": [...] } in the body with pagination via query parameters.This differs from the self-hosted Core Filter API documented in Search via DB, which uses limit, offset, sort_by, and include_count in the body and returns total_count.

​
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