Certifaction

Certifaction is a privacy-first digital signature platform built around a Zero Document Knowledge model: documents are hashed and end-to-end encrypted on the client so they can be signed and verified without Certifaction ever seeing their content. It offers Simple, Advanced, and Qualified Electronic Signatures (SES/AES/QES) compliant with eIDAS, ZertES, UETA and ESIGN, delivered through a client-hosted CLI and Local API plus an Admin API for organization, user, role and team-space management, with EU / Switzerland / on-premises data residency and ISO/IEC 27001:2022 certification.

Certifaction publishes 6 API contracts indexed on the APIs.io network, including Account API, Documents API, Organization API, and 3 more. Tagged areas include Company, Ai Enterprise Software, E-Signature, Digital Signature, and Qualified Electronic Signature.

The Certifaction catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Certifaction’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, authentication, and 27 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.6/100 developing ▬ flat Agent 25/100 agent aware Front door AI 2/6 trace saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

AccessSelf serve

2 published contracts

Company Ai Enterprise Software E-Signature Digital SignatureQualified Electronic SignatureeIDAS Privacy Compliance Identity Verification Switzerland

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Cybersecurity Management

BC-620

Organization

POST /organization/{id}/user POST /organization/{organization_id}/role

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 51.6/100 · developing

Contract Quality 9.6 / 19

Developer Ergonomics 10.3 / 15

Access Clarity 8.1 / 15

Operational Transparency 2.6 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 4.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/certifaction: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Legal and E-Signature	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

Certifaction Account API

Access your user account data

Certifaction Documents API

Download your documents or remove {{ .ProductName }}'s access to them

Certifaction Organization API

Manage your organization, users, and roles.

Certifaction Server API

Check the server's status

Certifaction Signing API

Sign files and request signatures

Certifaction Teamspace API

Manage teamspaces and their members.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

{{ .ProductName }} Admin Account API

OPEN COLLECTION

{{ .ProductName }} Admin Account Documents API

OPEN COLLECTION

{{ .ProductName }} Admin Account Organization API

OPEN COLLECTION

{{ .ProductName }} Admin Account Server API

OPEN COLLECTION

{{ .ProductName }} Admin Account Signing API

OPEN COLLECTION

{{ .ProductName }} Admin Account Teamspace API

OPEN COLLECTION

Scroll for all 7

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Certifaction Webhooks

ASYNCAPI

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Certifaction Admin Api Overlay

2 actions · update · certifaction-admin-api-openapi.yml

UNRECORDED

Certifaction Local Api Overlay

2 actions · update · certifaction-local-api-openapi.yml

UNRECORDED

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Certifaction Authentication

apiKey/oauth2 · 2 schemes

SECURITY

Certifaction Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Certifaction Trust Center

ISO/IEC 27001:2022, eIDAS, ZertES, GDPR, revFADP, UETA, ESIGN

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Certifaction Agentic Access

22 operations · 14 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Components

Webhooks

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 4

Authentication, authorization, and security posture

Authentication

Compliance

TrustCenter

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: certifaction
name: Certifaction
description: 'Certifaction is a privacy-first digital signature platform built around a Zero Document Knowledge model: documents
  are hashed and end-to-end encrypted on the client so they can be signed and verified without Certifaction ever seeing their
  content. It offers Simple, Advanced, and Qualified Electronic Signatures (SES/AES/QES) compliant with eIDAS, ZertES, UETA
  and ESIGN, delivered through a client-hosted CLI and Local API plus an Admin API for organization, user, role and team-space
  management, with EU / Switzerland / on-premises data residency and ISO/IEC 27001:2022 certification.'
url: https://raw.githubusercontent.com/api-evangelist/certifaction/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- hv-capital
- seedcamp
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
image: https://developers.certifaction.com/themes/certifaction/logo.svg
x-docs-platform: vitepress
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-21
tags:
- Company
- Ai Enterprise Software
- E-Signature
- Digital Signature
- Qualified Electronic Signature
- eIDAS
- Privacy
- Compliance
- Identity Verification
- Switzerland
tags_raw:
- Company
- Ai Enterprise Software
- Electronic Signature
- Digital Signature
- Document Signing
- Qualified Electronic Signature
- eIDAS
- Privacy
- Compliance
- Identity Verification
- Switzerland
apis:
- aid: certifaction:certifaction-account-api
  name: Certifaction Account API
  description: Access your user account data
  humanURL: https://developers.certifaction.com/en/references/api
  baseURL: https://api.certifaction.io
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/certifaction-account-api-openapi.yml
- aid: certifaction:certifaction-documents-api
  name: Certifaction Documents API
  description: Download your documents or remove {{ .ProductName }}'s access to them
  humanURL: https://developers.certifaction.com/en/references/api
  baseURL: https://api.certifaction.io
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/certifaction-documents-api-openapi.yml
- aid: certifaction:certifaction-organization-api
  name: Certifaction Organization API
  description: Manage your organization, users, and roles.
  humanURL: https://developers.certifaction.com/en/references/api
  baseURL: https://api.certifaction.io
  tags:
  - Organization
  properties:
  - type: OpenAPI
    url: openapi/certifaction-organization-api-openapi.yml
- aid: certifaction:certifaction-server-api
  name: Certifaction Server API
  description: Check the server's status
  humanURL: https://developers.certifaction.com/en/references/api
  baseURL: https://api.certifaction.io
  tags:
  - Servers
  tags_raw:
  - Server
  properties:
  - type: OpenAPI
    url: openapi/certifaction-server-api-openapi.yml
- aid: certifaction:certifaction-signing-api
  name: Certifaction Signing API
  description: Sign files and request signatures
  humanURL: https://developers.certifaction.com/en/references/api
  baseURL: https://api.certifaction.io
  tags:
  - Signing
  properties:
  - type: OpenAPI
    url: openapi/certifaction-signing-api-openapi.yml
- aid: certifaction:certifaction-teamspace-api
  name: Certifaction Teamspace API
  description: Manage teamspaces and their members.
  humanURL: https://developers.certifaction.com/en/references/api
  baseURL: https://api.certifaction.io
  tags:
  - Teamspace
  properties:
  - type: OpenAPI
    url: openapi/certifaction-teamspace-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/certifaction-capability-edges.yml
  name: Certifaction Business Capability Map
- type: Overlay
  url: overlays/certifaction-admin-api-overlay.yaml
- type: Website
  url: https://certifaction.com
- type: DeveloperPortal
  url: https://developers.certifaction.com/en/
- type: Documentation
  url: https://developers.certifaction.com/en/guides/about
- type: APIReference
  url: https://developers.certifaction.com/en/references/api
- type: GettingStarted
  url: https://developers.certifaction.com/en/guides/getting-started-api
- type: Blog
  url: https://certifaction.com/content-hub/
- type: GitHubOrganization
  url: https://github.com/certifaction
- type: Pricing
  url: https://certifaction.com/pricing/
- type: SignUp
  url: https://app.certifaction.io/signup/
- type: Login
  url: https://app.certifaction.io/login
- type: TermsOfService
  url: https://certifaction.com/terms-and-conditions/
- type: PrivacyPolicy
  url: https://certifaction.com/privacy-policy/
- type: Authentication
  url: authentication/certifaction-authentication.yml
- type: OpenAPI
  url: openapi/_original/certifaction-local-api-openapi.yml
- type: Packages
  url: packages/certifaction-packages.yml
- type: SDKs
  url: packages/certifaction-packages.yml
- type: CLI
  url: cli/certifaction-cli.yml
- type: Components
  url: components/certifaction-components.yml
- type: X-MCPServerCandidate
  url: mcp/certifaction-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/certifaction-llms.txt
- type: Webhooks
  url: asyncapi/certifaction-webhooks.yml
- type: Conventions
  url: conventions/certifaction-conventions.yml
- type: ErrorCatalog
  url: errors/certifaction-problem-types.yml
- type: Lifecycle
  url: lifecycle/certifaction-lifecycle.yml
- type: ChangeLog
  url: changelog/certifaction-changelog.yml
- type: DataModel
  url: data-model/certifaction-data-model.yml
- type: Conformance
  url: conformance/certifaction-conformance.yml
- type: Compliance
  url: https://certifaction.com/security-esigning-and-data/
- type: TrustCenter
  url: security/certifaction-trust-center.yml
- type: DomainSecurity
  url: security/certifaction-domain-security.yml
- type: AgenticAccess
  url: agentic-access/certifaction-agentic-access.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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