databuddy

Apps & Automation

Integrate Databuddy analytics using the SDK, REST API, or MCP. Use when implementing analytics tracking, feature flags, custom events, Web Vitals, error tracking, LLM observability, MCP agents, or querying analytics data programmatically.

QUICK START

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Source SKILL.md: https://github.com/databuddy-analytics/Databuddy/blob/HEAD/.cursor/skills/databuddy/SKILL.md

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Databuddy

Databuddy is a privacy-first analytics platform. This skill covers both the SDK (@databuddy/sdk) and the REST API.

External Documentation

For the most up-to-date documentation, fetch: https://databuddy.cc/llms.txt

When to Use This Skill

Use this skill when:

Setting up analytics in React/Next.js/Vue applications
Implementing server-side tracking in Node.js
Adding feature flags to an application
Tracking custom events, errors, or Web Vitals
Integrating LLM observability with Vercel AI SDK
Querying analytics data via the REST API or MCP
Building MCP agents or AI-powered analytics workflows
Building custom dashboards or reports

SDK Entry Points

Import Path	Environment	Description
`@databuddy/sdk`	Browser (Core)	Core tracking utilities and types
`@databuddy/sdk/react`	React/Next.js	React component and hooks
`@databuddy/sdk/node`	Node.js/Server	Server-side tracking with batching
`@databuddy/sdk/vue`	Vue.js	Vue plugin and composables
`@databuddy/sdk/ai/vercel`	AI/LLM	Vercel AI SDK middleware for LLM analytics

Quick Start

React/Next.js

import { Databuddy } from "@databuddy/sdk/react";

export default function RootLayout({ children }) {
  return (
    <html>
      <body>
        {children}
        <Databuddy
          clientId={process.env.NEXT_PUBLIC_DATABUDDY_CLIENT_ID}
          trackWebVitals
          trackErrors
          trackPerformance
        />
      </body>
    </html>
  );
}

Node.js Server-Side

import { Databuddy } from "@databuddy/sdk/node";

const client = new Databuddy({
  clientId: process.env.DATABUDDY_CLIENT_ID,
  enableBatching: true,
});

await client.track({
  name: "api_call",
  properties: { endpoint: "/users", method: "GET" },
});

// Important: flush before process exit in serverless
await client.flush();

Feature Flags

import { FlagsProvider, useFlag, useFeature } from "@databuddy/sdk/react";

// Wrap your app
<FlagsProvider clientId="..." user={{ userId: "123" }}>
  <App />
</FlagsProvider>

// In components
function MyComponent() {
  const { on, loading } = useFeature("dark-mode");
  if (loading) return <Skeleton />;
  return on ? <DarkTheme /> : <LightTheme />;
}

LLM Analytics

import { databuddyLLM } from "@databuddy/sdk/ai/vercel";
import { openai } from "@ai-sdk/openai";

const { track } = databuddyLLM({
  apiKey: process.env.DATABUDDY_API_KEY,
});

const model = track(openai("gpt-4o"));
// All LLM calls are now automatically tracked

Key Configuration Options

Option	Type	Default	Description
`clientId`	`string`	Auto-detect	Project client ID
`disabled`	`boolean`	`false`	Disable all tracking
`trackWebVitals`	`boolean`	`false`	Track Web Vitals metrics
`trackErrors`	`boolean`	`false`	Track JavaScript errors
`trackPerformance`	`boolean`	`true`	Track performance metrics
`enableBatching`	`boolean`	`true`	Enable event batching
`samplingRate`	`number`	`1.0`	Sampling rate (0.0-1.0)
`skipPatterns`	`string[]`	—	Glob patterns to skip tracking

Common Patterns

Disable in Development

<Databuddy
  disabled={process.env.NODE_ENV === "development"}
  clientId="..."
/>

Skip Sensitive Paths

<Databuddy
  clientId="..."
  skipPatterns={["/admin/**", "/internal/**"]}
  maskPatterns={["/users/*", "/orders/*"]}
/>

Custom Event Tracking

// Browser
import { track } from "@databuddy/sdk/react";

track("purchase", {
  product_id: "sku-123",
  amount: 99.99,
  currency: "USD",
});

// Node.js
await client.track({
  name: "subscription_renewed",
  properties: { plan: "pro", amount: 29.99 },
});

Global Properties

// Browser
window.databuddy?.setGlobalProperties({
  plan: "enterprise",
  abVariant: "checkout-v2",
});

// Node.js
client.setGlobalProperties({
  environment: "production",
  version: "1.0.0",
});

REST API

Base URLs

Service	URL	Purpose
Analytics API	`https://api.databuddy.cc/v1`	Query analytics data
Event Tracking	`https://basket.databuddy.cc`	Send custom events

Authentication

Use API key in the x-api-key header:

curl -H "x-api-key: dbdy_your_api_key" \
  https://api.databuddy.cc/v1/query/websites

Get API keys from: Dashboard → Organization Settings → API Keys

Query Analytics Data

curl -X POST -H "x-api-key: dbdy_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "parameters": ["summary", "pages"],
    "preset": "last_30d"
  }' \
  "https://api.databuddy.cc/v1/query?website_id=web_123"

Available Query Types:

Type	Description
`summary`	Overall website metrics and KPIs
`pages`	Page views and performance by URL
`traffic`	Traffic sources and referrers
`browser_name`	Browser usage breakdown
`device_types`	Device category breakdown
`countries`	Visitors by country
`errors`	JavaScript errors
`performance`	Web vitals and load times
`custom_events`	Custom event data

Date Presets: today, yesterday, last_7d, last_30d, last_90d, this_month, last_month

MCP (Model Context Protocol)

Databuddy exposes an MCP server for AI agents (Cursor, Claude Desktop, etc.) to query analytics. Use for natural-language questions, automated reports, or structured data extraction.

Endpoint: POST https://api.databuddy.cc/v1/mcp (local: http://localhost:3001/v1/mcp)

Auth: API key with read:data scope via x-api-key or Authorization: Bearer <key>

Tools:

ask – Natural-language analytics questions (e.g. "top 5 pages last week")
list_websites – List accessible website IDs
get_data – Pre-built query with websiteId, type, and preset or from/to
get_schema – ClickHouse schema docs (tables, columns)
capabilities – Query types with descriptions, date presets, hints

Date presets for get_data: last_7d, last_30d, last_90d, today, yesterday, this_week, this_month, etc.

Cursor setup (mcp.json): Add a Databuddy MCP entry with the API URL and your API key.

Send Events via API

curl -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "type": "custom",
    "name": "purchase",
    "properties": {
      "value": 99.99,
      "currency": "USD"
    }
  }' \
  "https://basket.databuddy.cc/?client_id=web_123"

Batch Events

curl -X POST \
  -H "Content-Type: application/json" \
  -d '[
    {"type": "custom", "name": "event1", "properties": {...}},
    {"type": "custom", "name": "event2", "properties": {...}}
  ]' \
  "https://basket.databuddy.cc/batch?client_id=web_123"

Reference Documentation

For detailed documentation, see:

Core SDK Reference - Browser tracking utilities and types
React Integration - React/Next.js component and hooks
Node.js Integration - Server-side tracking with batching
Feature Flags - Feature flags for all platforms
AI/LLM Tracking - Vercel AI SDK integration
REST API Reference - Full REST API documentation

Source Code

SDK: packages/sdk/
API: apps/api/
API Docs: apps/docs/content/docs/api/