Mesa Developer Documentation

Mesa provides drop-in embedded financial features for partner web applications. Integrate Mesa's UI directly into your product with a few lines of code.

Set Up

Create and manage your API Keys and authorized users.

• API Keys — create and manage API Keys
• Authorized Users — add and managed authorized users

Embedded UI

Add Mesa's financial features (e.g., invoice acceleration) to your web app via an <iframe> controlled by the Mesa SDK. This handles authentication, theming, and secure cross-origin messaging out of the box.

• Quickstart — integrate in under 15 minutes
• Auth Flow — understand the JWT-based trust model
• User Flows — CTA, auth, onboarding, and dashboard screens
• SDK Reference — full MesaClient API
• Theming — match your brand
• ThemeConfig — full theme and copy property reference

Partner API

Integrate directly with Mesa's partner API to manage user data, query invoices, and request accelerated funding on behalf of your users.

• Endpoints — all endpoints for the partner API