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 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
52.0/100 developing ▬ flat Agent 32/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
2 APIs 1 MCP Servers
CompanyBiometricsIdentityAuthenticationPalm RecognitionAccess ControlPaymentsIdentity Verification

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 52.0/100 · developing
Contract Quality 14.2 / 21
Developer Ergonomics 10.0 / 17
Access Clarity 6.7 / 17
Operational Transparency 2.9 / 11
Contract Governance 1.7 / 10
Discoverability 6.5 / 9
Regulatory Posture 7.5 / 15
Agent readiness — 32/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 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
Regulatory Posture applies to this provider. Its tags matched the Payments 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.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/. 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.

Open Collections 3

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

API Collection

OPEN COLLECTION

Keyo REST Authentication API

OPEN COLLECTION

Keyo REST Authentication Identities API

OPEN COLLECTION

Arazzo Workflows 1

Multi-step API workflows described with the Arazzo specification.

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 Server

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

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

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: '0.23'
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: Overlay
  url: overlays/keyo-openapi-overlay.yaml
- 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