Embedded e-signature workflows
Embed signing directly into your application with a REST API, so users do not need to leave your product or create separate accounts.
Firma.dev
Firma.dev is an electronic signature API for developers and SaaS teams to embed signing flows, with pay-as-you-go pricing, white-label controls, customer workspaces, and API-driven document management.
Electronic signature API for embedded workflows
Firma.dev is an electronic signature API for developers and SaaS teams that want to embed document signing inside their own application. The site positions it as a pay-as-you-go service with no contracts or minimums, priced at €0.029 per envelope.
The product is designed for white-labeled, regulated workflows: teams can create templates, send documents, track signing status, receive event notifications, and manage isolated customer workspaces from the API or dashboard. The site also states support for standards and requirements including ESIGN, UETA, eIDAS, GDPR, HIPAA, SOC 2, encryption in transit and at rest, and data residency.
Core features
Document and template management
Create reusable templates, send documents for signing, track status, and download completed documents through the API.
Webhooks and event stream
Use webhooks and real-time event streaming to react to viewing, signing, completion, team activity, and error events as they happen.
Customer workspace partitioning
Set up isolated customer workspaces with separate templates, documents, branding, and permissions for each customer.
White-label embedding
Add your own branding and UX, with white-label options and embedded editors/forms for signing and template creation.
Developer toolkit
Work with Swagger/OpenAPI docs, pre-built UI components, sample apps, and examples for JS, React, Vue.js, Angular, and mobile apps.
Common use cases
In-app document signing
Add signature capture to a SaaS product without sending users to a separate signing portal. The API and embedded editors are meant to keep the workflow inside your app.
Customer-specific workspaces
Create isolated spaces for each customer when you need separate templates, branding, and document management. This fits platforms that serve multiple client organizations from one account.
Automated signing workflows
Send agreements, collect signatures in order, and track completion from templates or direct PDF uploads. The document status endpoints and event stream support automation around the signing lifecycle.
White-labeled customer experiences
Build a branded signing experience with your own UX, forms, and styling instead of an external vendor look and feel. The site emphasizes white-label controls and embedded UI components.
Event-driven document operations
Use webhook events and real-time notifications to update internal records, trigger follow-up actions, or power dashboards when a document is viewed, signed, or completed.
Pros and Cons
Pros
- Low pay-as-you-go price with no minimums or contracts.
- Supports embedded, white-labeled signing flows inside an app.
- Includes templates, document sending, status tracking, webhooks, and event streaming.
- Provides isolated customer workspaces for SaaS and reseller-style setups.
- Offers a free testing mode API key for trial use with real documents.
Cons
- The public materials do not list every SDK or language-specific integration in detail.
- Pricing is usage-based, so total cost depends on envelope volume.
FAQ
Is there a free way to try the product?
Yes. The pricing page says every account includes a free testing mode API key so you can test with real documents before going live.
Do I need to contact sales to get started?
No. The site says you can sign up, get an API key, and start building without talking to sales.
How is the product priced?
The product is built around a pay-as-you-go model. The pricing page says the listed price is €0.029 per envelope, with no minimums or contracts.
What does an envelope mean?
An envelope is defined as one document sent for signature, regardless of how many signers or pages it contains.
What currency will I be billed in?
The FAQ and pricing pages state that billing is in your local currency, with support for 30+ currencies and no conversion fees from Firma.dev.
Quick Facts
- Category
- Electronic signature API
- Primary users
- Developers and SaaS teams
- Deployment model
- Embedded API and dashboard
- Pricing model
- Pay as you go
- Billing
- Local currency, with euro list pricing
- Source domain
- firma.dev
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