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MadeOnSol — eenmanszaak, Hulshout, Belgium · KBO/BTW BE 1039.535.538 (art. 56bis, no VAT charged)

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ToolsSDKs & Librariessol4k

SDKs & Libraries · Solana

sol4k logo — Solana SDKs & Libraries tool

sol4k

Kotlin client for Solana

SDKs & Libraries
Healthy

Rating

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Health

85/100

Checked 12d ago

Pricing

Free

See pricing section

Updated

Aug 2026

SDKs & Libraries

Froglabs Bundler — Trade. Launch. Snipe. 7 days free with code MADEONSOLSponsored

Overview

What sol4k actually does.

sol4k is a Kotlin client for Solana that lets JVM and Android developers talk to the chain without leaving their language ecosystem. It works with Kotlin, Java and other JVM languages, and runs on Android and JavaScript, filling a gap for teams not on JavaScript or Rust. The library connects via RPC nodes and exposes APIs to query state, create and read accounts, check balances, simulate transactions, fetch a blockhash and submit transactions. It handles key pairs and public keys, supports versioned and legacy transaction formats, and can build, sign, serialize and deserialize transactions with single or multiple instructions. Pre-built instruction classes cover SOL transfers and token account creation, plus a base class for custom programs and SPL tokens. For Android and backend Java/Kotlin teams, this avoids bridging to JavaScript. It is aimed at JVM and Android developers integrating Solana into apps and wallets. Caveat: as a community client it tracks a smaller surface than official web3.js, so new program features may lag.

Live health

Uptime, SSL, response time.

Health & Activity

Uptime 30d

100.0%

Website
Online
SSL
Valid
Social Activity
Dormant(572d ago)
Last checked: 12d ago

Latest from @_sol4k

March 22, 2025

How to Develop on Solana using Kotlin https://t.co/ZYHbs5LQdB #solana #kotlin

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Key features

What's in the box.

  • Kotlin client usable from Java and any JVM language
  • Runs on Android and JavaScript targets
  • Account queries, balances, blockhash and transaction simulation
  • Build, sign, serialize and submit versioned or legacy transactions
  • Pre-built SOL transfer and SPL token instruction classes

Verdict

The honest tradeoffs.

Pros

  • Native Solana access for JVM and Android stacks
  • Avoids bridging to a JavaScript SDK
  • Supports both versioned and legacy transactions
  • Includes ready-made instructions plus a custom-program base class

Cons

  • Community library, not an official Solana SDK
  • Smaller feature surface than web3.js may lag new program features
  • Niche to JVM/Android developers

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Top 10 Best SDKs & LibrariesAll SDKs & Libraries Tools

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Track KOL trades & rug-check any token by API

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