Firma.dev
Firma.dev provides an electronic signature API for developers, with pay-as-you-go pricing starting at €0.049 per envelope and no minimums or contracts. It offers embeddable signing with custom branding - template and signing-request editors and the signing experience embed in the customer's own product, with isolated customer workspaces. It is built for ESIGN, UETA and eIDAS with audit trails, supports SOC 2 and ISO/IEC 27001, and addresses GDPR. It offers a REST API described in OpenAPI, webhook events, and sample apps for embedding e-signatures directly into applications.
Firma.dev publishes 12 API contracts indexed on the APIs.io network, including Company API, Custom Fields API, Email Domains API, and 9 more. Tagged areas include Company, E-Signature, Developer Tools, and LowCost.
The Firma.dev catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.
Firma.dev’s developer surface includes authentication, documentation, API reference, getting-started guide, pricing, signup flow, support, and 31 more developer resources.
What this lets a business do 2
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
APIs 12
Individual APIs this provider publishes, each with its own machine-readable definition.
Firma.dev Company API
Company information and settings
Firma.dev Custom Fields API
Custom field definition management for workspaces, templates, and signing requests
Firma.dev Email Domains API
Email domain setup and verification for sending signing request emails from custom domains
Firma.dev Email Templates API
Email template management for workspace and company-level customization of signing request notifications
Firma.dev JWT Management API
JWT token generation and revocation for embedded templates
Firma.dev Organization Seals API
Organization seal management: create, update, revoke, and erase seals applied to signing requests
Firma.dev Signer Terms API
Custom signer terms-of-service / consent statements, company-level with per-language workspace overrides
Firma.dev Signing Requests API
Document signing request operations
Firma.dev Templates API
Template management operations
Firma.dev Webhooks API
Webhook configuration and management
Firma.dev Workspace Settings API
Workspace configuration and settings
Firma.dev Workspaces API
Workspace management operations
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MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Pricing Plans 1
Published pricing tiers and plan structures.
Event Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Firma Dev Webhooks
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Firma Dev Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Firma.dev API Rules
SPECTRALJSON Schema 58
Standalone JSON Schema definitions for this provider's data models.
AnchorTag
JSON SCHEMAApiKeyExpireResponse
JSON SCHEMAApiKeyRegenerateResponse
JSON SCHEMACompanyEmailTemplateListResponse
JSON SCHEMACompany
JSON SCHEMACompanySettings
JSON SCHEMAConditionSet
JSON SCHEMACustomFieldListResponse
JSON SCHEMADomainCreateResponse
JSON SCHEMADomainFinalizeResponse
JSON SCHEMADomainListResponse
JSON SCHEMADomain
JSON SCHEMADomainVerifyDnsResponse
JSON SCHEMADomainVerifyOwnershipResponse
JSON SCHEMAEmailTemplateDefaultsResponse
JSON SCHEMAEmailTemplateDeleteResponse
JSON SCHEMAEmailTemplatePlaceholdersResponse
JSON SCHEMAEmailTemplate
JSON SCHEMAField
JSON SCHEMAGenerateJWTRequest
JSON SCHEMAGenerateSigningRequestJWTRequest
JSON SCHEMAGenerateSigningRequestJWTResponse
JSON SCHEMAGenerateTemplateTokenResponse
JSON SCHEMALogoDeleteResponse
JSON SCHEMALogoUploadResponse
JSON SCHEMAMessageResponse
JSON SCHEMAOrganizationSealCreate
JSON SCHEMAOrganizationSeal
JSON SCHEMARecipient
JSON SCHEMAReminder
JSON SCHEMARevokeJWTResponse
JSON SCHEMARevokeSigningRequestJWTResponse
JSON SCHEMARotateSecretResponse
JSON SCHEMASealAccessLogEntry
JSON SCHEMASealApplication
JSON SCHEMASealImage
JSON SCHEMASealStatement
JSON SCHEMASecretStatusResponse
JSON SCHEMASignerTermsDeleteResponse
JSON SCHEMASignerTermsListResponse
JSON SCHEMASignerTermsUpdateResponse
JSON SCHEMASigningRequestCustomField
JSON SCHEMASigningRequestDetail
JSON SCHEMASigningRequestSettings
JSON SCHEMASigningRequestUpdateResponse
JSON SCHEMATemplateCopyResponse
JSON SCHEMATemplateCustomField
JSON SCHEMATemplateDuplicateResponse
JSON SCHEMATemplatePatchResponse
JSON SCHEMATemplate
JSON SCHEMATestWebhookResponse
JSON SCHEMAWebhookListResponse
JSON SCHEMAWebhook
JSON SCHEMAWorkspaceCustomField
JSON SCHEMAWorkspaceEmailTemplateListResponse
JSON SCHEMAWorkspaceListResponse
JSON SCHEMAWorkspace
JSON SCHEMAWorkspaceSettings
JSON SCHEMAScroll for all 58
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 2
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 9
Pagination, idempotency, versioning, errors, and events
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Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 4
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.