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Firma.dev Review

Firma.dev provides a GDPR-compliant e-signature API for developers, enabling integration in hours without contracts or minimums at €0.029 per envelope.

shipped Jun 13, 2026updated Aug 17, 2026developerpaid
Domain rating21Monthly visits90/moAI-readablestrong
developerapie-signature

Why it matters

1GDPR-compliant e-signature API for developers.
2Integration is achievable in hours, not weeks, via a REST API.
3Pricing is set at €0.029 per envelope, with no minimums or long-term contracts.
4API supports 120 write requests per minute, with higher limits for read operations.

Stork’s verdict on Firma.dev

Firma.dev provides a white-label e-signature API for compliance-heavy needs, but embedding it still requires developer effort.

Firma.dev reviewed by Stork AI · stork.ai/en/firma-dev

About Firma.dev

Business Model
Usage-Based (Pay Per Use)
Usage Pricing
€0.029 per envelope
Founded
2025
Team Size
11-50
Target Audience
Developers

Pricing Plans

Envelope Pricing
€0.049
  • GDPR-compliant
  • No contracts
  • No minimums

Cost Examples

  • Send 1 envelope: €0.029

Specs

API Available

Yes, public API

Screenshots

overview

What is Firma.dev?

Firma.dev is an e-signature API tool developed by Firma.dev that enables developers at startups and SaaS companies to embed document signing functionalities directly into their products. It offers GDPR-compliant electronic signatures at a cost of €0.029 per envelope.

features

Key Features of Firma.dev

Firma.dev provides a comprehensive e-signature API designed for developers, offering functionalities to embed document signing directly into applications. Key features include hosted signing flows, an embeddable template editor, and robust compliance support. The platform emphasizes developer-centric tools for efficient integration and management of electronic signatures.

  • GDPR-compliant e-signature API.
  • Hosted signing flows and embeddable template editor.
  • Programmatic creation, sending, and tracking of signature requests.
  • Full white-labeling capabilities for branding consistency.
  • Customer Workspaces for secure, siloed data per customer in multi-tenant SaaS applications.
  • Support for ESIGN, UETA, eIDAS (SES and AdES levels), HIPAA, SOC 2, and ISO 27001 compliance.
  • API versions (e.g., v1.7) include features like Split PDFs and hand-drawn signature enforcement.
  • One-off signing requests without requiring a template (introduced in v1.2.0).
  • Granular email controls and read-only fields for document customization.

use cases

Who Should Use Firma.dev?

Firma.dev is primarily designed for developers, SaaS companies, startups, and product teams seeking to integrate electronic signature capabilities directly into their applications. Its architecture supports high-volume, automated signature workflows and white-labeled experiences.

  • Developers embedding e-signature capabilities directly into applications.
  • SaaS companies offering white-labeled e-signature experiences to their customers.
  • Startups automating contract generation and management processes.
  • Product teams managing HR paperwork at scale within their platforms.
  • Businesses building efficient SaaS onboarding flows requiring document signing.

pricing

Firma.dev Pricing & Plans

Firma.dev operates on a transparent, usage-based pricing model designed to be cost-effective for developers and businesses of all sizes. It eliminates the need for long-term contracts, minimum commitments, or per-seat fees, offering a pay-as-you-go structure. A free test mode is available for development and integration.

  • Per Envelope: €0.029 per envelope.
  • No minimums or contracts required.
  • No per-seat fees.
  • Free test mode available for development and integration.

Similar Tools

Firma.dev vs Competitors

Firma.dev positions itself as a developer-first, cost-effective, and rapidly integratable alternative to established e-signature providers. It differentiates through its transparent pay-as-you-go pricing and focus on SaaS-specific features like tenant isolation and full white-labeling at its base price.

1
DocuSign API

DocuSign is a market leader offering a highly scalable and robust e-signature API with extensive enterprise-grade features and comprehensive global compliance, including Binding Corporate Rules (BCR) for data transfers.

DocuSign's API plans are subscription-based, starting at approximately $61/month for 40 envelopes, resulting in a significantly higher per-envelope cost (around $1.53) compared to Firma.dev's €0.029. It targets larger enterprises with complex workflows, whereas Firma.dev focuses on a developer-first, low-cost, per-envelope model without contracts or minimums.

2

Adobe Acrobat Sign offers deep integration with the broader Adobe Document Cloud and Creative Cloud ecosystems, providing advanced document generation, management, and analytics capabilities.

Adobe Sign API pricing is typically customized for enterprise clients, with some pay-as-you-go options at $0.75 per live document or subscription plans starting around $1,000 annually for basic API quotas, making it considerably more expensive per transaction than Firma.dev's €0.029. It caters to organizations already invested in the Adobe ecosystem and requiring a broader suite of document services, unlike Firma.dev's specialized e-signature API.

3
Dropbox Sign API (formerly HelloSign)

Dropbox Sign is known for its user-friendly interface and seamless integration within the Dropbox ecosystem, providing a straightforward e-signature solution for various business sizes.

Dropbox Sign API offers a free test mode, with paid plans like the Essentials package starting at $75/month for 50+ signature requests, which translates to a higher per-envelope cost (around $1.50 if exactly 50) than Firma.dev's €0.029. While it emphasizes ease of use and integration with Dropbox, Firma.dev differentiates with a significantly lower per-envelope price and no minimums or contracts.

4
SignNow API

SignNow provides a scalable e-signature API with strong compliance certifications, including GDPR, HIPAA, and SOC 2, designed for embedding into high-volume enterprise workflows.

SignNow offers a free trial with 250 signature invites, and its Professional API plan starts at approximately $146/month for 1,000 invites per year (around $0.146 per invite), which is a higher per-envelope cost compared to Firma.dev's €0.029. SignNow offers volume discounts, but Firma.dev's base pricing is significantly lower and operates without minimums or annual contracts.

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