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Welcome Developers!
Build. Connect. Scale.

Access powerful APIs, tools, and resources to integrate EpsilonLambda's platform with your applications. From tutorials to SDKs, everything you need to build innovative solutions is right here.

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Begin building with our developer resources and support

Getting Started

Follow our step-by-step guides to connect your applications, test your integrations, and deploy scalable solutions.

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Access APIs

Explore our API catalog and find the right integration for your use case.

Browse REST APIs

Test APIs

Use our interactive API sandbox to experiment and validate your integrations.

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API Documentation

Comprehensive reference guides for all our supported APIs and integrations. Updated regularly with code samples, request formats, and authentication methods.

REST API Reference

Detailed documentation for our REST-based APIs with code examples in multiple languages.

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SDKs & Tools

Pre-built SDKs for popular programming languges including JavaScript, Python, and Go.

JavaScript SDK Python SDK

API Sandbox

Test our APIs in a safe environment with real-time feedback. Try out different endpoints and parameters without needing a production account.

POST /api/identify

{
  "external_id": "developer-123",
  "attributes": {
    "email": "test@example.com",
    "first_name": "John",
    "last_name": "Doe"
  }
}

Copy

200 OK

109ms

{
  "status": "success",
  "message": "Identifier processed",
  "timestamp": "2025-09-09T12:34:56.789Z"
}

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Need Help?

Our developer support team is here to help with implementation, troubleshooting, and API best practices.

Developer Help

Get help with integration issues and API best practices.

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Tutorials & Guides

Step-by-step guides for common use cases and API implementations.

Access Code Examples

Welcome Developers! Build. Connect. Scale.