Firma

Firma

Cheapest e-signature API for developers—white-label, no minimums

firma.dev is a developer‑focused e‑signature platform that provides a low‑cost, fully white‑labelled API for embedding electronic signing directly into applications. With a simple REST interface, Swagger/OpenAPI docs, and pre‑built UI components, developers can add signing workflows in minutes without redirects or extra user accounts. The service charges only €0.029 per envelope, offers unlimited team isolation, real‑time event streaming, and compliance with ESIGN, UETA, eIDAS, SOC 2, ISO 27001, GDPR, and eIDAS standards. It supports custom branding, reselling, and detailed analytics, making it ideal for SaaS companies looking to integrate secure, scalable e‑signatures as a native feature or revenue stream.