Passbase

Passbase was a developer-first identity verification (KYC) platform founded in Berlin and San Francisco that let companies verify users in seconds through facial comparison, liveness detection, and authenticity checks on government-issued IDs from 190+ countries. It shipped mobile and web client SDKs plus a server-side Verifications API (v2) for reading verified identities, their resources and data points, and project settings, with webhooks for verification lifecycle events. Passbase was acquired by Parallel Markets in March 2023; api.passbase.com and docs.passbase.com are no longer live, and this API Evangelist profile captures the last-published API surface reconstructed from the company's official OpenAPI-generated SDKs. Backed by Cowboy Ventures and Seedcamp.

Passbase publishes 2 APIs on the APIs.io network: Identity API and Project API. Tagged areas include Company, Security, Identity Verification, KYC, and Biometrics.

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

Passbase’s developer surface includes authentication and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

31.8/100 thin ▬ flat Agent 43/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessSelf serve

2 APIs 1 MCP Servers

CompanySecurityIdentity VerificationKYCBiometricsAuthenticationIdentityCompliance

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 31.8/100 · thin

Contract Quality 16.7 / 25

Developer Ergonomics 4.2 / 20

Access Clarity 0.0 / 20

Operational Transparency 1.4 / 13

Contract Governance 2.0 / 12

Discoverability 7.6 / 10

Agent readiness — 43/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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 4 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/passbase: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

AGENTIC

Resources

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

DataModel

Webhooks

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: passbase
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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/passbase.png
name: Passbase
description: Passbase was a developer-first identity verification (KYC) platform founded in Berlin and San Francisco that
  let companies verify users in seconds through facial comparison, liveness detection, and authenticity checks on government-issued
  IDs from 190+ countries. It shipped mobile and web client SDKs plus a server-side Verifications API (v2) for reading verified
  identities, their resources and data points, and project settings, with webhooks for verification lifecycle events. Passbase
  was acquired by Parallel Markets in March 2023; api.passbase.com and docs.passbase.com are no longer live, and this API
  Evangelist profile captures the last-published API surface reconstructed from the company's official OpenAPI-generated SDKs.
  Backed by Cowboy Ventures and Seedcamp.
url: https://raw.githubusercontent.com/api-evangelist/passbase/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- cowboy-ventures
- seedcamp
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-successor: Parallel Markets
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Security
- Identity Verification
- KYC
- Biometrics
- Authentication
- Identity
- Compliance
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: passbase:passbase-identity-api
  name: Passbase Identity API
  description: Access verified identities, their resources and resource files.
  humanURL: https://github.com/passbase/passbase-php
  baseURL: https://api.passbase.com/verification/v2
  tags:
  - Identity
  properties:
  - type: OpenAPI
    url: openapi/passbase-identity-api-openapi.yml
- aid: passbase:passbase-project-api
  name: Passbase Project API
  description: Read project settings and verification configuration.
  humanURL: https://github.com/passbase/passbase-php
  baseURL: https://api.passbase.com/verification/v2
  tags:
  - Project
  properties:
  - type: OpenAPI
    url: openapi/passbase-project-api-openapi.yml
common:
- type: Overlay
  url: overlays/passbase-verification-overlay.yaml
- type: Website
  url: https://www.passbase.com
- type: GitHubOrganization
  url: https://github.com/passbase
- type: Packages
  url: packages/passbase-packages.yml
- type: SDKs
  url: packages/passbase-packages.yml
- type: Authentication
  url: authentication/passbase-authentication.yml
- type: MCPServer
  url: mcp/passbase-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/passbase-llms.txt
- type: Conventions
  url: conventions/passbase-conventions.yml
- type: ErrorCatalog
  url: errors/passbase-problem-types.yml
- type: Conformance
  url: conformance/passbase-conformance.yml
- type: Lifecycle
  url: lifecycle/passbase-lifecycle.yml
- type: DataModel
  url: data-model/passbase-data-model.yml
- type: Webhooks
  url: asyncapi/passbase-webhooks.yml
- type: DomainSecurity
  url: security/passbase-domain-security.yml
- type: AgenticAccess
  url: agentic-access/passbase-agentic-access.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 16
  pass: local-v1

Passbase

Kin Score

APIs 2

Passbase Identity API

Passbase Project API

Open Collections 3

API Collection

Passbase Verifications Identity API

Passbase Verifications Identity Project API

MCP Servers 1

Passbase MCP Server

Event Specifications 1

Passbase Webhooks

Security Posture 2

Passbase Authentication

Passbase Domain Security

Agentic Access 1

Passbase Agentic Access