Open Arsenal

The Foundation of Connected Lending

LoanSphere is an open source specification designed to establish a common foundation for connected lending systems. It provides a modular framework that enables banks, credit unions, mortgage companies, fintech platforms, brokers, and financial organizations to define, manage, and connect configurable loan programs while maintaining control over their own lending policies and business rules.

The specification separates lending infrastructure from lending decisions. Loan originators determine their own qualification criteria, interest rates, repayment terms, fees, documentation requirements, and approval processes. LoanSphere provides the standardized framework needed to represent these elements consistently, allowing different lending systems and organizations to communicate more effectively without forcing a single lending model.

LoanSphere includes core modules for loan program management, borrower profiles, property and asset information, qualification rules, loan configuration, interest rate structures, repayment and amortization models, fee management, application workflows, documentation requirements, decision transparency, disclosures, compliance tracking, and version management. These modules create a complete foundation for describing and operating modern lending programs across different financial environments.

The specification also supports optional plugin modules that extend LoanSphere with advanced capabilities. Organizations can integrate AI-powered lending assistants, advanced underwriting models, credit and income verification systems, identity verification, fraud detection, property valuation tools, loan marketplaces, federated lending networks, servicing platforms, analytics systems, external integrations, event-driven communication, and governance features.

By providing a flexible, interoperable, and extensible architecture, LoanSphere enables the development of next-generation lending ecosystems where financial organizations can collaborate through shared standards while preserving their independence, innovation, and control over their lending products.

All specifications are released under the GNU Affero General Public License v3.0 or later (AGPL-3.0+) and may be freely used, modified, and distributed with the required attribution provisions outlined in Section 7 of the license. Organizations seeking attribution-free commercial deployment may obtain a Specification Branding License (SBL), with licensing terms and pricing based on the specification category, deployment scope, usage scale, and the size of the network or organization utilizing the specification.