Application-specific financial infrastructure

Build the financial chainyour application needs.

Nunchi SDK is a modular framework for composing purpose-built financial chains, powered by Commonware primitives.

Read the SDK View on GitHub Contact our team

ModularOpen sourceBuilt on Commonware

CHAIN.CONFIGCOMMONWARE / RUST

APPLICATION PROFILEMarkets chain

01AuthorityControl
02OracleData
03CLOBMarkets
04MempoolExecution

OUTPUTPurpose-built execution environment

READY

HOW IT FITS TOGETHERChoose financial modules. Compose the runtime. Operate one purpose-built chain.

01 Select only the primitives your product needs.
02 Nunchi assembles the application framework.
03 Commonware powers consensus, networking, and state.

OPEN-SOURCE FINANCIAL INFRASTRUCTURE

Financial primitives, composed around your product.

12SDK MODULES

86+ LIVE COMMITS

2026.7COMMONWARE

RUSTOPEN SOURCE

Compose the stack

Start with primitives.Ship your own system.

Choose only the components your application needs. Nunchi provides the financial building blocks; your product defines the chain.

Blockchain Basics

Core modules for assets, cryptography, data, connectivity, and reusable chain components.

Coins
Crypto
RPC
DKG
Bridge
Oracle
Chat
Factory

Read source

Network Infrastructure

Authority and proof-of-stake components for operating and securing a network.

Authority
PoS

Read source

Financial Primitives

Purpose-built modules for markets, collateral, issuance, and financial state.

Margin
Securities
Vaults
CLOB
Derivatives
Stablecoin

Read source

Chain Examples

Reference implementations that show how modules become working application chains.

Coins chain
Bridge chain
Custom module

Read source

PREVIEW AN APPLICATION CHAINCUSTOM · 4 SELECTED

Select the SDK modules a financial application chain would include. The configuration summary updates immediately. The code example is sourced from the current public repository.

QUICK START

MODULES IN THIS CONFIGURATION4 modules

AuthorityOracleMempoolChain

Data · INCLUDEDOracle

Bring signed external data into application logic.

SELECTED APPLICATION MODULES PREVIEW UPDATES LIVE

01Authority

02Oracle

03Mempool

04Chain

examples/coins/chain/src/application.rs

View source ↗

// Interface-generated configuration previewconst SELECTED_MODULES: &[&str] = &["Authority","Oracle","Mempool","Chain",]; // Source-backed application typeuse nunchi_clob::ClobExtension;use crate::CoinsRuntime; pub type Application =nunchi_chain::Application<CoinsRuntime, ClobExtension>;

Selection comments update with the builder. The application type below them is sourced from the Nunchi SDK coins-chain example and wires CoinsRuntime and ClobExtension into the reusable chain type.

DECISION FRAME

A financial SDK builtaround your application.

Commonware supplies the infrastructure.Nunchi packages the financial framework for application-specific chains.

COMPARE	RAW PRIMITIVES	GENERAL-PURPOSE CHAIN	NUNCHI SDK
Foundation	Commonware primitives	Shared-chain execution	Commonware plus a financial SDK
Financial logic	Build each primitive	Add it at the application layer	Compose purpose-built modules
Control	Maximum control from zero	Shared-chain constraints	An application-specific chain
Best fit	Infrastructure teams	General applications	Purpose-built financial systems

From primitives to product

The chain followsthe application.

A direct path from primitives to an operated financial system. Every layer exists because the application requires it.

01 / Choose

Select the primitives.

Start from the modules your product actually needs, from authority and assets to data, execution, and markets.

AuthorityOracleCLOB

02 / Compose

Define application logic.

Wire the modules together around your product and encode the operating assumptions it requires.

RuntimeStateInterfaces

03 / Operate

Run the system you designed.

Expose your interfaces, observe state, and evolve the chain as the application moves from prototype to production.

P2PSimplexQMDB

Built on Commonware

Batteries required.Financial logic included.

Commonware provides composable primitives for consensus, networking, runtime, and storage. Nunchi turns that foundation into an opinionated SDK for financial applications.

P2PSimplexRuntimeQMDB

Inspect the SDK

Patrick O'Grady highlighting Nunchi SDK as an opinionated SDK built with Commonware — Commonware's Patrick O'Grady on purpose-built, vertical SDKs.

ENGAGE

From repository to production

Use the SDK independently.Bring Nunchi in where it matters.

Start with the open SDK, then add architecture or implementation support where the system demands deeper specialization.

01OPEN SOURCE

Start with the code.

Inspect modules, examples, and compatibility in the SDK overview.

Read the SDK

02ARCHITECTURE

Define the right system.

Map requirements to modules, state, interfaces, and an operating model.

Request a review

03PRODUCTION

Build with the team.

Scope custom modules, integrations, and production support for your application.

Discuss a partnership

One framework, specific systems

Build around the market,from the chain up.

Markets

Compose order books, market data, transaction ordering, and application-specific controls.

Oracle · CLOB · Mempool

Asset networks

Define how assets are issued, moved, authorized, and exposed to connected applications.

Coins · Authority · Bridge

Financial infrastructure

Build a purpose-specific runtime for settlement, risk, or a new financial primitive.

Chain · RPC · Common

THE SDK FOR FINANCIAL APPLICATION CHAINS

Build the systemyour product deserves.

Schedule a call Start with the code