Instant. Private.
Ecash.

Minibits is a Bitcoin Lightning and ecash wallet plus related projects that deliver instant, low-cost, and private value transfers — even when the payer is offline.

Google Play App Store FreedomStore Zapstore

Minibits is an open source project supported by:

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HRF Bitcoin Bounty

Human Rights Foundation

OpenSats Grantee

Open-source Bitcoin funding

Minibits Wallet

Minibits wallet provides you with a free Lightning address, and with Nostr Wallet Connect built in, it's perfect for sending small tips—known as "zaps"—on Nostr social networks. More, Minibits delivers true Tap-to-pay experience to Bitcoin, combining ecash with NFC - even if payer remains offline.

Free Lightning Address

Get a human-readable Lightning address instantly — no sign-up or KYC required.

Learn about Lightning addresses

Nostr Wallet Connect & Zaps

Built-in NWC lets you send tips (called zaps) on Nostr social networks straight from your wallet.

Nostr Wallet Connect spec

Tap-to-Pay with NFC

True tap-to-pay experience using NFC, even between two Minibits devices. Compatible with Numo payment terminal.

Numo terminal

Minibits Mint

Minibits mint issues ecash with SAT unit and serves for testing purposes only. When using ecash, you trust the issuing mint to redeem it back for bitcoin. Use only with small amounts and at your own risk. We encourage communities to set up their own mints for production use.

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Cashu Ecash

Minibits mint implements the Cashu protocel with high privacy guarantees - mint never learns your balance or transactions. Issued tokens are bearer instruments with instant and even offline exchange.

Learn about Cashu

Lightning-backed

The mint is backed by the Bitcoin Lightning Network, enabling seamless in-and-out conversion between ecash and Lightning payments at any time.

Minibits Lightning node

Recovery

Ecash tokens can be recovered if your device is lost or damaged. The mint provides a fast and wallet-independent recovery service that allows you to restore your balance using a seed phrase.

Minibits recovery tool

Minibits Ippon

Minibits Ippon is a minimalistic ecash and Lightning wallet implementing the Cashu protocol — designed from the ground up for AI agents.

AI agents that need to make or receive micropayments can create a wallet via a single HTTP call or a CLI command, fund it with Lightning, and start transacting in seconds. No UI. No seed phrases. No complexity.

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REST API & CLI

Ippon exposes a simple, versioned REST API so AI agents can create wallets, deposit sats, send and receive ecash tokens, and pay Lightning invoices — all over HTTP. A CLI mode with SQLite is also available for local, self-hosted use.

Live Ippon server

Seedless, short-lived wallets

AI agents operate with short-lived wallets and minimal balances. Ippon is designed for exactly this: no seed phrases, no UI, just a lightweight access key per wallet and a clean JSON API.

Ippon Github

MCP server

To facilitate use by AI agents, Ippon includes a built-in MCP (Mint Communication Protocol) server, allowing it to interact with the wallet in network (API) mode.

Ippon MCP server

Ippon REST API — quick reference

POST/v1/wallet— Create new wallet

POST/v1/wallet/deposit— Fund via Lightning invoice

GET/v1/wallet— Get wallet balance and limits

POST/v1/wallet/send— Export ecash token

POST/v1/wallet/pay— Pay Lightning invoice or address

POST/v1/wallet/receive— Receive token to wallet

GET/v1/wallet/decode— Decodes Cashu token or lightning invoice

GET/v1/rate/:currency— Get fiat exchange rate

View on GitHub

Ippon CLI — demo session

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Instant. Private.Ecash.