Build SDKs Developers Love to Use
We design and develop SDKs that enable seamless integration with your platform. From JavaScript, Python, and mobile SDKs to Web3, Chrome Extensions, and API wrappers — our team delivers well-documented, version-controlled SDKs ready for scale.
Custom SDK Development Services We Offer
Our SDKs are designed for performance, ease of use, and developer trust. Whether it's public APIs, third-party services, or internal systems — Tantrija ensures your SDK is fast, secure, and future-ready.
JavaScript & TypeScript SDK Development
We build lightweight, well-typed SDKs using modern JS/TS standards. These SDKs are ideal for web platforms, SaaS products, and public APIs, with auto-completion, strong typing, and easy integration out-of-the-box.
Mobile SDKs (iOS & Android)
Create native SDKs for Android (Java/Kotlin) and iOS (Swift/Objective-C) that offer fast, stable, and battery-efficient access to your services. Includes sample apps, analytics, and test coverage.
Web3 & Blockchain SDKs
Build SDKs for wallet integration, smart contract interaction, NFT minting, DeFi protocols, and DApp functionality using Ethereum, Solana, EVM, and other blockchain ecosystems.
Chrome Extension SDKs
We build SDK wrappers for Chrome Extensions and browser tools to expose your extension’s features to third-party developers, internal tools, or automation scripts securely.
REST & GraphQL API SDKs
Design SDKs that wrap your API into a user-friendly toolkit. Includes automatic token management, error handling, retry logic, pagination helpers, and intuitive method names.
Analytics & Event SDKs
Develop SDKs that collect real-time user behavior, metrics, and custom events with minimal performance overhead — perfect for SaaS products, games, and marketing tools.
Cross-Platform SDKs (React Native, Flutter)
We create SDKs that work seamlessly across multiple frameworks like React Native, Flutter, Capacitor, and Ionic, enabling consistent experience across mobile and web apps.
Versioned & Auto-Update Enabled SDKs
Maintain backward compatibility and update your SDKs safely with versioning systems, changelogs, and deprecation warnings to keep integrations clean and future-proof.
Architecture Overview
The real technology layers behind a Custom SDK Development engagement.
Core
JavaScript
The SDK or extension's core logic, built for the target runtime.
Distribution
npm
Versioned packaging for developer adoption.
Supporting Services
Node.js
Any backend API the SDK/extension talks to.
Documentation
Next.js
Developer-facing docs sites, where the engagement includes one.
Benefits
Seamless Integration
Built for dev onboarding
Our SDKs reduce friction for developers with simple APIs, strong documentation, and sample code for fast adoption.
Explore More Services In This Category
Every other real, in-production service we offer alongside this one.
/ FAQs
Frequently Asked Questions
What languages and platforms do you build SDKs for?
JavaScript/TypeScript, native mobile (Swift/Objective-C for iOS, Java/Kotlin for Android), and cross-platform frameworks like React Native and Flutter - plus Web3/blockchain SDKs for wallet and smart contract integration.
Do you build SDKs that wrap our existing REST or GraphQL API?
Yes. We design SDKs that wrap your API into a developer-friendly toolkit, including automatic token management, error handling, retry logic, pagination helpers, and clear method naming.
Can you build an SDK that collects analytics or usage events?
Yes, with minimal performance overhead - suited for SaaS products, games, and marketing tools that need real-time behavior and event tracking.
How do you handle SDK versioning so we don't break existing integrations?
We build versioning systems, changelogs, and deprecation warnings from the start, so you can update the SDK safely without breaking developers already integrated against it.
Do you provide sample apps and test coverage with the SDK?
Yes, particularly for mobile SDKs - sample apps, analytics, and test coverage are included so third-party developers have a working reference, not just documentation.
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