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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.

This page provides practical examples of using Blnk’s Filter API. For information about filter syntax, operators, and available fields, see Database Filtering.

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High-value applied transactions

Retrieve all applied transactions above $10,000, sorted by amount: 
curl -X POST "https://YOUR_BLNK_INSTANCE_URL/transactions/filter" \
  -H "X-Blnk-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "filters": [
      { "field": "status", "operator": "eq", "value": "APPLIED" },
      { "field": "amount", "operator": "gte", "value": 10000 }
    ],
    "sort_by": "amount",
    "sort_order": "desc",
    "limit": 50
  }'

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USD balances with positive balance

Find all USD balances with a positive balance and include the total count: 
curl -X POST "https://YOUR_BLNK_INSTANCE_URL/balances/filter" \
  -H "X-Blnk-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "filters": [
      { "field": "currency", "operator": "eq", "value": "USD" },
      { "field": "balance", "operator": "gt", "value": 0 }
    ],
    "include_count": true
  }'

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Transactions in date range

Retrieve transactions from Q1 2024: 
curl -X POST "https://YOUR_BLNK_INSTANCE_URL/transactions/filter" \
  -H "X-Blnk-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "filters": [
      { "field": "created_at", "operator": "gte", "value": "2024-01-01" },
      { "field": "created_at", "operator": "lt", "value": "2024-04-01" }
    ]
  }'
Find all ledgers with “savings” in the name, sorted alphabetically: 
curl -X POST "https://YOUR_BLNK_INSTANCE_URL/ledgers/filter" \
  -H "X-Blnk-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "filters": [
      { "field": "name", "operator": "ilike", "value": "%savings%" }
    ],
    "sort_by": "name",
    "sort_order": "asc"
  }'

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Transactions by balance

Find all transactions for a specific balance with pagination: 
curl -X POST "https://YOUR_BLNK_INSTANCE_URL/transactions/filter" \
  -H "X-Blnk-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "filters": [
      { "field": "balance_id", "operator": "eq", "value": "bln_abc123" }
    ],
    "include_count": true,
    "limit": 100
  }'

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Need help?

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