Count Events

Endpoint

POST /v1/api/query/count/{tenantId}

Get the count of events matching your filters. This endpoint is optimized for aggregations and is much faster than fetching all events just to count them.

Parameters

Path Parameters

Parameter	Type	Description
`tenantId`	string	Your tenant identifier (use the alias shown on your dashboard)

Request Body

Field	Type	Required	Description
`event`	string	No	Filter by specific event name
`after`	string	No	Start date (YYYY-MM-DD format)
`before`	string	No	End date (YYYY-MM-DD format)
`filterSet`	array	No	Array of filter objects

Filter Object

Field	Type	Required	Description
`property`	string	Yes	Property path to filter on
`comparison`	string	Yes	Comparison operator
`value`	any	Yes	Value to compare against

Response

Returns a simple count object:

{
  "count": 15247
}

When to Use Count vs Query

✅ Use Count Endpoint For:

Aggregations: Getting totals, averages, or other metrics
Dashboard widgets: Displaying numbers without needing event details
Performance monitoring: Checking if thresholds are exceeded
Quick checks: Verifying if events exist without fetching them

❌ Use Query Endpoint For:

Event details: When you need the actual event data
User journeys: Analyzing sequences of events
Data export: When you need to process individual events
Debugging: Investigating specific event properties

Examples

Basic Count

Count all page views in a date range:

curl -X POST https://queryapis.grainql.com/v1/api/query/count/your-tenant-id \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_SECRET_KEY" \
  -d '{
    "event": "page_viewed",
    "after": "2024-01-01",
    "before": "2024-01-31"
  }'

Response:

{
  "count": 12543
}

Filtered Count

Count high-value purchases:

curl -X POST https://queryapis.grainql.com/v1/api/query/count/your-tenant-id \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_SECRET_KEY" \
  -d '{
    "event": "purchase_completed",
    "filterSet": [
      {
        "property": "properties.price",
        "comparison": "GREATER_THAN",
        "value": 100
      }
    ]
  }'

Multiple Filters

Count events from specific users on mobile devices:

curl -X POST https://queryapis.grainql.com/v1/api/query/count/your-tenant-id \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_SECRET_KEY" \
  -d '{
    "filterSet": [
      {
        "property": "userId",
        "comparison": "IN",
        "value": ["user_123", "user_456", "user_789"]
      },
      {
        "property": "properties.device",
        "comparison": "EQUALS",
        "value": "mobile"
      }
    ]
  }'

Conversion Rate Calculation

Calculate conversion rates by comparing counts:

# Count signup page views
curl -X POST https://queryapis.grainql.com/v1/api/query/count/your-tenant-id \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_SECRET_KEY" \
  -d '{
    "event": "page_viewed",
    "filterSet": [
      {
        "property": "properties.page",
        "comparison": "EQUALS",
        "value": "/signup"
      }
    ]
  }'

# Count account creations
curl -X POST https://queryapis.grainql.com/v1/api/query/count/your-tenant-id \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_SECRET_KEY" \
  -d '{
    "event": "account_created"
  }'

Code Examples

JavaScript/TypeScript

async function countEvents(tenantId: string, apiKey: string, filters: any): Promise<number> {
  const response = await fetch(`https://queryapis.grainql.com/v1/api/query/count/${tenantId}`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'X-API-Key': apiKey
    },
    body: JSON.stringify(filters)
  });

  if (!response.ok) {
    throw new Error(`Count query failed: ${response.status} ${response.statusText}`);
  }

  const result = await response.json();
  return result.count;
}

// Usage
const pageViews = await countEvents('your-tenant-id', 'your-api-key', {
  event: 'page_viewed',
  after: '2024-01-01',
  before: '2024-01-31'
});

console.log(`Total page views in January: ${pageViews}`);

Python

import requests
from typing import Dict, Any

def count_events(tenant_id: str, api_key: str, filters: Dict[str, Any]) -> int:
    """Count events matching the given filters"""
    
    response = requests.post(
        f'https://queryapis.grainql.com/v1/api/query/count/{tenant_id}',
        headers={
            'Content-Type': 'application/json',
            'X-API-Key': api_key
        },
        json=filters
    )
    
    response.raise_for_status()
    result = response.json()
    return result['count']

# Usage
purchase_count = count_events('your-tenant-id', 'your-api-key', {
    'event': 'purchase_completed',
    'filterSet': [
        {
            'property': 'properties.price',
            'comparison': 'GREATER_THAN',
            'value': 50
        }
    ]
})

print(f'High-value purchases: {purchase_count}')

Node.js

const fetch = require('node-fetch');

async function countEvents(tenantId, apiKey, filters) {
  const response = await fetch(`https://queryapis.grainql.com/v1/api/query/count/${tenantId}`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'X-API-Key': apiKey
    },
    body: JSON.stringify(filters)
  });

  if (!response.ok) {
    throw new Error(`Count query failed: ${response.status} ${response.statusText}`);
  }

  const result = await response.json();
  return result.count;
}

// Usage
const errorCount = await countEvents('your-tenant-id', process.env.GRAIN_API_KEY, {
  event: 'error_occurred',
  after: '2024-01-01',
  before: '2024-01-31'
});

console.log(`Errors in January: ${errorCount}`);

Dashboard Metrics

Use the count endpoint to build dashboard metrics:

async function getDashboardMetrics(tenantId: string, apiKey: string) {
  const [totalUsers, totalEvents, errors, purchases] = await Promise.all([
    // Count unique users
    countEvents(tenantId, apiKey, {
      filterSet: [{ property: 'userId', comparison: 'IS_NOT_NULL', value: null }]
    }),
    
    // Count all events
    countEvents(tenantId, apiKey, {}),
    
    // Count errors
    countEvents(tenantId, apiKey, { event: 'error_occurred' }),
    
    // Count purchases
    countEvents(tenantId, apiKey, { event: 'purchase_completed' })
  ]);

  return {
    totalUsers,
    totalEvents,
    errorRate: errors / totalEvents,
    conversionRate: purchases / totalUsers
  };
}

Performance Monitoring

Monitor system health with count queries:

import time
from datetime import datetime, timedelta

def monitor_system_health(tenant_id: str, api_key: str):
    """Monitor system health using count queries"""
    
    now = datetime.now()
    last_hour = now - timedelta(hours=1)
    
    # Count events in last hour
    total_events = count_events(tenant_id, api_key, {
        'after': last_hour.strftime('%Y-%m-%d'),
        'before': now.strftime('%Y-%m-%d')
    })
    
    # Count errors in last hour
    error_events = count_events(tenant_id, api_key, {
        'event': 'error_occurred',
        'after': last_hour.strftime('%Y-%m-%d'),
        'before': now.strftime('%Y-%m-%d')
    })
    
    error_rate = error_events / total_events if total_events > 0 else 0
    
    if error_rate > 0.05:  # 5% threshold
        print(f"🚨 High error rate: {error_rate:.2%}")
        # Send alert
    else:
        print(f"✅ System healthy: {error_rate:.2%} error rate")

# Run every 5 minutes
while True:
    monitor_system_health('your-tenant-id', 'your-api-key')
    time.sleep(300)

A/B Testing

Use count queries to analyze A/B test results:

async function analyzeABTest(tenantId: string, apiKey: string, testName: string) {
  const [variantA, variantB, conversionsA, conversionsB] = await Promise.all([
    // Count users who saw variant A
    countEvents(tenantId, apiKey, {
      event: 'experiment_viewed',
      filterSet: [
        { property: 'properties.experiment', comparison: 'EQUALS', value: testName },
        { property: 'properties.variant', comparison: 'EQUALS', value: 'A' }
      ]
    }),
    
    // Count users who saw variant B
    countEvents(tenantId, apiKey, {
      event: 'experiment_viewed',
      filterSet: [
        { property: 'properties.experiment', comparison: 'EQUALS', value: testName },
        { property: 'properties.variant', comparison: 'EQUALS', value: 'B' }
      ]
    }),
    
    // Count conversions for variant A
    countEvents(tenantId, apiKey, {
      event: 'conversion_completed',
      filterSet: [
        { property: 'properties.experiment', comparison: 'EQUALS', value: testName },
        { property: 'properties.variant', comparison: 'EQUALS', value: 'A' }
      ]
    }),
    
    // Count conversions for variant B
    countEvents(tenantId, apiKey, {
      event: 'conversion_completed',
      filterSet: [
        { property: 'properties.experiment', comparison: 'EQUALS', value: testName },
        { property: 'properties.variant', comparison: 'EQUALS', value: 'B' }
      ]
    })
  ]);

  const conversionRateA = conversionsA / variantA;
  const conversionRateB = conversionsB / variantB;
  
  return {
    variantA: { views: variantA, conversions: conversionsA, rate: conversionRateA },
    variantB: { views: variantB, conversions: conversionsB, rate: conversionRateB },
    winner: conversionRateA > conversionRateB ? 'A' : 'B'
  };
}

Error Handling

Handle count query errors gracefully:

async function countEventsWithRetry(tenantId: string, apiKey: string, filters: any, maxRetries = 3): Promise<number> {
  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    try {
      const response = await fetch(`https://queryapis.grainql.com/v1/api/query/count/${tenantId}`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'X-API-Key': apiKey
        },
        body: JSON.stringify(filters)
      });

      if (response.status === 429) {
        const retryAfter = response.headers.get('Retry-After');
        const delay = retryAfter ? parseInt(retryAfter) * 1000 : Math.pow(2, attempt) * 1000;
        
        console.log(`Rate limited. Retrying in ${delay}ms...`);
        await new Promise(resolve => setTimeout(resolve, delay));
        continue;
      }

      if (!response.ok) {
        throw new Error(`Count query failed: ${response.status} ${response.statusText}`);
      }

      const result = await response.json();
      return result.count;
    } catch (error) {
      if (attempt === maxRetries) throw error;
      await new Promise(resolve => setTimeout(resolve, Math.pow(2, attempt) * 1000));
    }
  }
  
  throw new Error('Max retries exceeded');
}

Performance Tips

1. Use Date Ranges

Always include date ranges to limit the data scanned:

{
  "after": "2024-01-01",
  "before": "2024-01-31"
}

2. Be Specific with Filters

Use specific filters to reduce the dataset:

{
  "event": "purchase_completed",
  "filterSet": [
    { "property": "properties.price", "comparison": "GREATER_THAN", "value": 100 }
  ]
}

3. Cache Results

Cache count results for frequently accessed metrics:

const cache = new Map();
const CACHE_TTL = 5 * 60 * 1000; // 5 minutes

async function getCachedCount(tenantId: string, apiKey: string, filters: any): Promise<number> {
  const key = JSON.stringify(filters);
  const cached = cache.get(key);
  
  if (cached && Date.now() - cached.timestamp < CACHE_TTL) {
    return cached.count;
  }
  
  const count = await countEvents(tenantId, apiKey, filters);
  cache.set(key, { count, timestamp: Date.now() });
  
  return count;
}

Custom Plans

Need higher rate limits for your count queries? We offer custom plans with:

Higher rate limits: Custom requests per minute/day limits
Dedicated support: Priority support and SLA guarantees
Volume discounts: Competitive pricing for high-volume usage

Next Steps

Query Events

Learn how to query events with filters

List Events

Discover available event types

Filter Reference

Complete guide to all filter operators

Custom Dashboard

Build a custom analytics dashboard

API Documentation

Query API

Endpoint

Parameters

Path Parameters

Request Body

Filter Object

Response

When to Use Count vs Query

✅ Use Count Endpoint For:

❌ Use Query Endpoint For:

Examples

Basic Count

Filtered Count

Multiple Filters

Conversion Rate Calculation

Code Examples

JavaScript/TypeScript

Python

Node.js

Dashboard Metrics

Performance Monitoring

A/B Testing

Error Handling

Performance Tips

1. Use Date Ranges

2. Be Specific with Filters

3. Cache Results

Custom Plans

Next Steps

Query Events

List Events

Filter Reference

Custom Dashboard

​Endpoint

​Parameters

​Path Parameters

​Request Body

​Filter Object

​Response

​When to Use Count vs Query

​✅ Use Count Endpoint For:

​❌ Use Query Endpoint For:

​Examples

​Basic Count

​Filtered Count

​Multiple Filters

​Conversion Rate Calculation

​Code Examples

​JavaScript/TypeScript

​Python

​Node.js

​Dashboard Metrics

​Performance Monitoring

​A/B Testing

​Error Handling

​Performance Tips

​1. Use Date Ranges

​2. Be Specific with Filters

​3. Cache Results

​Custom Plans

​Next Steps

Query Events

List Events

Filter Reference

Custom Dashboard

Endpoint

Parameters

Path Parameters

Request Body

Filter Object

Response

When to Use Count vs Query

✅ Use Count Endpoint For:

❌ Use Query Endpoint For:

Examples

Basic Count

Filtered Count

Multiple Filters

Conversion Rate Calculation

Code Examples

JavaScript/TypeScript

Python

Node.js

Dashboard Metrics

Performance Monitoring

A/B Testing

Error Handling

Performance Tips

1. Use Date Ranges

2. Be Specific with Filters

3. Cache Results

Custom Plans

Next Steps