Firma.dev

Key Features

• •Effortless Integration: Add signing workflows in minutes with just a few lines of code using the simple REST API. Works with any programming language. Drop-in iFrame solution with responsive design and white-label branding automatically applied. Most teams integrate in under an hour.
• •Ultra-Low Pricing: At just €0.029 per envelope, Firma.dev is the most affordable e-signature API. No monthly fees, no contracts, no hidden costs – you only pay when you send documents. This pay-as-you-go model is up to 10x cheaper than traditional providers.
• •Fully White-Labeled: Embed e-signatures seamlessly with your own branding and UX. Rebrand the entire signing experience, including email notifications and the signing interface. This white-label capability allows SaaS companies to offer e-signatures as a native feature without third-party branding. Resell-ready with unlimited teams and complete data isolation.
• •Regulated & Secure: Firma.dev is compliant with ESIGN, UETA, and eIDAS standards, ensuring legal enforceability. It holds SOC 2 and ISO 27001 certifications, uses bank-grade encryption, and provides audit trails and certificates of completion for every signed document. GDPR compliance and data residency options are also available.
• •Developer-first Toolkit: Comprehensive REST API with Swagger/OpenAPI documentation, pre-built UI components, webhook events, and sample apps for quick start. Supports JavaScript, React, Vue.js, Angular, and mobile apps. Real-time event streaming via server-sent events enables live dashboards and automated workflows.
• •Resell-ready: Create unlimited teams with complete data isolation, custom branding, and team-specific webhook configurations. Turn e-signatures into a revenue stream by bundling them as a premium feature for your customers while managing their data separately.

Use Cases

• •A SaaS founder integrates Firma.dev's REST API into their platform, enabling users to sign documents without leaving the app. In under an hour, they add a white-label signing flow. The result is a frictionless user experience that boosts retention and reduces churn.
• •A legal tech startup replaces a self-hosted DocuSEAL solution with Firma.dev's white-label API. Integration takes just two days, and costs drop significantly. Clients can now sign documents directly within the legal platform, streamlining the workflow and improving client satisfaction.
• •A fintech company uses Firma.dev's webhooks to receive real-time notifications when documents are signed. They set up an automated workflow that updates loan status in their system upon signature. This eliminates manual checks, speeds up processing, and improves operational efficiency.
• •A bootstrapped startup integrates Firma.dev with zero upfront cost. They only pay €0.029 per envelope when they send documents. This allows them to offer e-signatures as a premium feature without financial risk, scaling their costs directly with customer usage.
• •An enterprise SaaS platform uses Firma.dev to create unlimited teams for each customer, each with isolated data and custom branding. They resell e-signatures as a premium add-on, generating a new revenue stream while ensuring each customer's data remains separate and secure.

Who is this for?

Firma.dev is built for developers and product teams at SaaS companies who need to embed compliant, white-label e-signatures into their applications. It is ideal for startup founders, bootstrapped teams, and engineers working with JavaScript, React, Vue.js, Angular, or mobile frameworks. Legal tech, fintech, and property tech startups will benefit from its affordable pricing and eIDAS compliance. Additionally, it suits enterprise SaaS teams looking to resell e-signatures as a feature, with unlimited team management and data isolation.