Quick Answer
Key takeaways
- Firma.dev provides two integration paths: traditional REST API and dual MCP servers for AI assistants like Claude
- MCP integration connects in under 1 minute with data and document servers
- Traditional REST API uses Swagger/OpenAPI docs with pre-built UI components
- Both methods cost €0.049 per envelope with no subscription fees or minimums
- GDPR, eIDAS, ESIGN, and UETA compliant with SOC 2 and ISO 27001 certification
Traditional REST API Integration
Firma.dev provides a standard REST API for any programming language with complete documentation.
- Get your API key from the Firma.dev dashboard after signup
- Review the Swagger/OpenAPI documentation for endpoint specifications
- Create a team using POST /teams endpoint with custom branding options
- Upload a document template or send directly using POST /documents/send
- Add recipients with roles (signer, approver, CC) and set signing order
- Configure webhook events to receive real-time status updates
- Access audit trails and certificates of completion via GET /documents/status
MCP Server Integration for Claude
Electronic Signature API at Just €0.049 for Developers offers dual MCP servers for direct AI assistant integration.
- Data MCP server: connects Claude to team analytics, document status, and template lists
- Document MCP server: enables Claude to create templates, send documents, and track signing progress
- Setup completes in under 1 minute with API key configuration
- Claude can query document status, retrieve team statistics, and initiate signing workflows
- Real-time event streaming provides live updates to AI conversations
- No code required—Claude handles API calls through MCP protocol
Configuration and Workflow Options
- White-label the experience with your own branding and domain
- Create unlimited teams with complete data isolation per customer
- Set up automatic reconnection handling for event streams
- Filter webhook subscriptions by document lifecycle or team activity
- Define signature fields, form fields, and recipient permissions in templates
- Configure signing order, deadlines, and custom metadata per envelope
- Access usage-based cost tracking and performance insights via team analytics
Compliance and Security Settings
- ESIGN, UETA, and eIDAS compliance built into every envelope
- SOC 2 and ISO 27001 certified infrastructure with data residency options
- GDPR-compliant processing with complete audit trails
- Certificates of completion generated automatically for legal records
- Team-specific webhook configurations for granular permission controls
- Server-sent events for real-time notifications without polling
Frequently asked questions
What is MCP and how does it work with Firma.dev?
Model Context Protocol (MCP) lets Claude and other AI assistants interact directly with Firma.dev's data and document servers to create templates, send envelopes, and query signing status through natural language.
Can I use both traditional API and MCP simultaneously?
Yes, Electronic Signature API at Just €0.049 for Developers supports both integration methods with the same API key, allowing traditional workflows and AI-assisted operations in parallel.
How long does traditional REST API integration take?
Firma.dev's REST API integrates in minutes with simple authentication, Swagger documentation, and pre-built UI components for common signing workflows.
What programming languages does the REST API support?
The Firma.dev REST API works with any programming language that can make HTTP requests, with complete OpenAPI specifications for code generation.
Does MCP integration affect pricing?
No, both traditional and MCP integration use the same €0.049 per envelope pricing with no subscription fees, contracts, or hidden costs.
What webhook events are available for real-time updates?
Firma.dev provides document lifecycle events, signing progress notifications, team activity monitoring, and error alerts through server-sent event streams.
Who Should Use Each Integration Method
- Use traditional REST API for: standard SaaS embedding, mobile apps, scheduled workflows, and existing automation pipelines
- Use MCP servers for: AI-assisted document workflows, conversational signing interfaces, and rapid prototyping with Claude
- Skip Firma.dev if: you need advanced identity verification, notarization services, or enterprise SSO beyond API key authentication
Compare integration options and pricing details on Electronic Signature API at Just €0.049 for Developers on Launch Llama.