Reusable Financial Infrastructure for Every App

Mezzanine provides a shared, programmable treasury and banking layer that all applications—first-party or third-party—can rely on. This common foundation makes financial workflows consistent, secure, and composable across the platform. Developers no longer need to rebuild financial plumbing for each new application. Instead, they build once, plug in, and deploy with full access to enterprise-grade financial primitives.

1. Unified Treasury Integration

• Every organization on Mezzanine has a native treasury that is visible, auditable, and governed by a multi-signature wallet (Safe).
• Incoming funds (from users, customers, or donors) are received via public wallet addresses or through fiat rails (ACH, wire, card) connected by Mezzanine’s banking integrations.
• Outgoing funds (for payments, payroll, reimbursements, grants, etc.) are proposed by applications and routed through the organization's Safe for approval and execution.

2. Built-in Multi-Sig Control (Self-Custodial)

• All treasury actions are gated by customizable multisig logic, giving organizations full control over asset movement and access policies.
• Mezzanine abstracts away the complexity of Safe setup and operation while allowing complete signer configurability (e.g. 2-of-3, 3-of-5, 5-of-7).
• Organizations can add or remove Safe signers directly through the interface, maintaining total control without reliance on a third partyMezzanine Labs - Full F….

3. Onchain + Offchain Banking

• Mezzanine integrates with fiat banking infrastructure, enabling money to flow in and out via ACH, wires, and cards—without apps having to manage bank relationships or compliance.
• Through Bridge and partner APIs, Mezzanine supports seamless on- and off-ramping between stablecoins and fiat—allowing organizations to treat their crypto and bank accounts as interchangeable as checking and savingsMezzanine Labs - Full D….
• This lets applications support both onchain-native users and offchain financial flows without adding friction.

4. Reusable SDK & Authorization Layer

• Developers don’t need to rebuild treasury logic, wallets, or transaction authorization. With our SDK, apps can propose transactions that automatically integrate with the organization’s treasury and authorization logic
• Each proposed transaction flows through Mezzanine’s access control and approval system. Organizations configure rules, thresholds, and roles once, and every app respects those rules out-of-the-box.

5. Universal Receipt Handling

• Treasury APIs are symmetric—applications that send money and those that receive money all rely on the same infrastructure.
  • Example: A donation app knows where to send funds (the org treasury), and a payroll app knows how to propose a transfer out (to employees).
• All receipts and transactions are logged in the organization's unified transaction history, accessible in both summary and granular form