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 15 more developer resources.

🌐 Visit website 📡 Source on GitHub
34.7/100 thin ▬ flat Agent 71/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
2 APIs 1 MCP Servers
CompanySecurityIdentity VerificationKYCBiometricsAuthenticationIdentityCompliance

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 34.7/100 · thin
Contract Quality 17.3 / 25
Developer Ergonomics 6.5 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 1.7 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 71/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 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
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.

Passbase Identity API

Access verified identities, their resources and resource files.

Passbase Project API

Read project settings and verification configuration.

MCP Servers 1

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

passbase-mcp.yml

MCP SERVER

Event Specifications 1

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

Passbase Webhooks

ASYNCAPI

Security Posture 2

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

Passbase Authentication

apiKey · 1 scheme

SECURITY

Passbase Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Passbase Agentic Access

6 operations

6 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Lifecycle
Lifecycle
 DataModel
DataModel
 Webhooks
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

Source (apis.yml)

apis.yml Raw ↑ 
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: '0.20'
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: 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