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Finance

Wallet Ledger API (Java)

An HTTP API in Java 21 + Javalin (Gradle) with a double-entry ledger: every transfer writes balanced entries, balances are derived from them, and requests are idempotent.

Web appStandard
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Free to sign up. You approve the plan before anything is built.

A working demo with sample data: add, edit and filter. Your changes stay in your browser.

How it works

  1. Wallet Ledger API (Java): the Endpoints screen

    Step 1 · Endpoints

    Double-entry, immutable entries

  2. Wallet Ledger API (Java): the Try it screen

    Step 2 · Try it

    Idempotent transfers

  3. Wallet Ledger API (Java): the Wallet Ledger API screen

    Step 3 · Wallet Ledger API

    Balances and statements per account

Start in three steps

  1. Step 1

    Start from this template

    Sign up free and open the template in the studio. Change the description to fit your idea if you like.

  2. Step 2

    Approve the plan

    The agent shows you what it will build: screens, data and features. Nothing is built until you agree.

  3. Step 3

    Test and publish

    The app is built, tested in a real browser and ready to publish on your own address.

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