Keyo website screenshot

Keyo

Keyo is a palm-based biometric identification platform offering a complete suite of touchless identity SaaS for payments, access control, ticketing, and time & attendance. Its palm-print and palm-vein (near-infrared) technology lets people verify their identity with a wave of the hand. Keyo exposes a REST API (developers.keyo.co) for managing biometric Identities and driving palm enrollment on Keyo devices, secured with the OAuth 2.0 client-credentials flow, plus real-time webhooks for enrollment and identification events. Keyo is backed by 500 Global and Obvious Ventures.

Keyo publishes 2 APIs on the APIs.io network: Authentication API and Identities API. Tagged areas include Company, Biometrics, Identity, Authentication, and Palm Recognition.

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

Keyo’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub
53.1/100 developing ▬ flat Agent 71/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
2 APIs 1 MCP Servers
CompanyBiometricsIdentityAuthenticationPalm RecognitionAccess ControlPaymentsIdentity Verification

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 53.1/100 · developing
Contract Quality 16.2 / 25
Developer Ergonomics 13.5 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 3.4 / 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/keyo: 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.

Keyo Authentication API

Exchange client credentials for an access token.

Keyo Identities API

Manage biometric identities and palm enrollment.

Arazzo Workflows 2

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

Keyo - enroll a palm biometric identity

Authenticate, create a Keyo Identity, and start palm biometric enrollment on a device. Grounded in the reconstructed Keyo OpenAPI operationIds.

ARAZZO

MCP Servers 1

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

keyo-mcp.yml

MCP SERVER

Event Specifications 1

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

Keyo Webhooks

Keyo delivers real-time notifications about palm biometric events within an organization by sending HTTP POST requests to a webhook endpoint URL registered in the organization d...

ASYNCAPI

Security Posture 4

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

Keyo Authentication

http · 2 schemes

SECURITY

Keyo Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Keyo Vulnerability Disclosure

Hackerone · contact published

SECURITY

Keyo Trust Center

SOC 2, GDPR, CCPA, BIPA

SECURITY

Agentic Access 1

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

Keyo Agentic Access

7 operations · 5 acting

7 operations · 5 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill
 AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel
 Lifecycle
Lifecycle
 Conformance
Conformance

Access & Security 6

Authentication, authorization, and security posture

Compliance
Compliance
 Security
Security
 TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: keyo
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/keyo.png
name: Keyo
description: Keyo is a palm-based biometric identification platform offering a complete suite of touchless identity SaaS for
  payments, access control, ticketing, and time & attendance. Its palm-print and palm-vein (near-infrared) technology lets
  people verify their identity with a wave of the hand. Keyo exposes a REST API (developers.keyo.co) for managing biometric
  Identities and driving palm enrollment on Keyo devices, secured with the OAuth 2.0 client-credentials flow, plus real-time
  webhooks for enrollment and identification events. Keyo is backed by 500 Global and Obvious Ventures.
url: https://raw.githubusercontent.com/api-evangelist/keyo/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- obvious-ventures
x-tier: enriched
x-tier-reason: developer-surface-found
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Biometrics
- Identity
- Authentication
- Palm Recognition
- Access Control
- Payments
- Identity Verification
apis:
- aid: keyo:keyo-authentication-api
  name: Keyo Authentication API
  description: Exchange client credentials for an access token.
  humanURL: https://developers.keyo.co
  baseURL: https://api.keyo.co/v1
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/keyo-authentication-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/keyo-webhooks-asyncapi.yml
  - type: Webhooks
    url: asyncapi/keyo-webhooks-asyncapi.yml
  - type: Arazzo
    url: arazzo/keyo-enroll-identity.yml
- aid: keyo:keyo-identities-api
  name: Keyo Identities API
  description: Manage biometric identities and palm enrollment.
  humanURL: https://developers.keyo.co
  baseURL: https://api.keyo.co/v1
  tags:
  - Identities
  properties:
  - type: OpenAPI
    url: openapi/keyo-identities-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/keyo-webhooks-asyncapi.yml
  - type: Webhooks
    url: asyncapi/keyo-webhooks-asyncapi.yml
  - type: Arazzo
    url: arazzo/keyo-enroll-identity.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DeveloperPortal
  url: https://developers.keyo.co
- type: Documentation
  url: https://developers.keyo.co
- type: APIReference
  url: https://developers.keyo.co/rest-api/identities
- type: GettingStarted
  url: https://developers.keyo.co/getting-started/overview
- type: Support
  url: https://developers.keyo.co/resources/support
- type: Blog
  url: https://keyo.com/newsroom
- type: SignUp
  url: https://keyo.com/get-keyo
- type: PrivacyPolicy
  url: https://keyo.com/privacy
- type: LLMsTxt
  url: llms/keyo-llms.txt
- type: MCPServer
  url: mcp/keyo-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/keyo-conventions.yml
- type: ErrorCatalog
  url: errors/keyo-problem-types.yml
- type: DataModel
  url: data-model/keyo-data-model.yml
- type: Lifecycle
  url: lifecycle/keyo-lifecycle.yml
- type: StatusPage
  url: https://status.keyo.co
- type: Conformance
  url: conformance/keyo-conformance.yml
- type: Compliance
  url: https://keyo.com/security
- type: Security
  url: https://keyo.com/security
- type: AgenticAccess
  url: agentic-access/keyo-agentic-access.yml
- type: TrustCenter
  url: security/keyo-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/keyo-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/keyo-domain-security.yml
- type: Authentication
  url: authentication/keyo-authentication.yml
- type: Website
  url: https://keyo.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence