IYK

IYK provides useful primitives and apps for building digi-physical (phygital) experiences, connecting physical products and merchandise to blockchain tokens, POAPs, and digital content through NFC chips. The IYK API exposes three categories of endpoints - Core (chips, chip groups, items, taps/refs, OTP codes, and phygitals), Modules (POAP Events and Guestbook Events), and Self-Service POAP Devices - letting brands and artists chip physical items, verify authentic taps, gate content and rewards, mint or transfer linked NFTs, and recognize fans who show up. IYK Music applies the same primitives to fan engagement, turning chipped merch and show check-ins into a living fan identity. IYK is backed by a16z.

IYK publishes 1 API on the APIs.io network. Tagged areas include Company, NFC, Phygital, Blockchain, and NFT.

IYK’s developer surface includes documentation, getting-started guide, support, signup flow, authentication, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

26.5/100 emerging ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

1 APIs 1 MCP Servers

CompanyNFCPhygitalBlockchainNFTPOAPChipsAuthenticationFan EngagementWeb3

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 26.5/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 10.4 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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/iyk: 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 1

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

IYK API

The IYK API provides primitives for building digi-physical experiences. Core endpoints manage chips (NFC tags such as NTAG 424, KONG, and ARX HaLo), chip groups, items, taps/ref...

MCP Servers 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

DataModel

DataModel

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: iyk
name: IYK
description: IYK provides useful primitives and apps for building digi-physical (phygital) experiences, connecting physical
  products and merchandise to blockchain tokens, POAPs, and digital content through NFC chips. The IYK API exposes three categories
  of endpoints - Core (chips, chip groups, items, taps/refs, OTP codes, and phygitals), Modules (POAP Events and Guestbook
  Events), and Self-Service POAP Devices - letting brands and artists chip physical items, verify authentic taps, gate content
  and rewards, mint or transfer linked NFTs, and recognize fans who show up. IYK Music applies the same primitives to fan
  engagement, turning chipped merch and show check-ins into a living fan identity. IYK is backed by a16z.
url: https://raw.githubusercontent.com/api-evangelist/iyk/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
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/iyk.png
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- NFC
- Phygital
- Blockchain
- NFT
- POAP
- Chips
- Authentication
- Fan Engagement
- Web3
apis:
- aid: iyk:iyk-api
  name: IYK API
  humanURL: https://docs.iyk.app
  baseURL: https://api.iyk.app
  tags:
  - Chips
  - Chip Groups
  - Items
  - Refs
  - Taps
  - OTP
  - Phygitals
  - POAP
  - Events
  - NFC
  description: The IYK API provides primitives for building digi-physical experiences. Core endpoints manage chips (NFC tags
    such as NTAG 424, KONG, and ARX HaLo), chip groups, items, taps/refs (validated physical interactions with replay protection),
    OTP codes (30-minute one-time passwords for NFT transfers and minting), and phygitals. Module endpoints cover POAP Events
    and Guestbook Events, and a Self-Service surface manages POAP devices. Authentication is via an x-iyk-api-key request
    header.
  properties:
  - type: DeveloperPortal
    url: https://docs.iyk.app
  - type: Documentation
    url: https://docs.iyk.app/api-overview
  - type: APIReference
    url: https://docs.iyk.app/api-core/chips
  - type: GettingStarted
    url: https://docs.iyk.app/api-quickstart
  - type: Authentication
    url: authentication/iyk-authentication.yml
  - type: Conventions
    url: conventions/iyk-conventions.yml
  - type: MCPServer
    url: mcp/iyk-mcp.yml
  - type: DataModel
    url: data-model/iyk-data-model.yml
  - type: WellKnown
    url: well-known/iyk-well-known.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/iyk-domain-security.yml
- type: Website
  url: https://iyk.app
- type: Documentation
  url: https://docs.iyk.app
- type: DeveloperPortal
  url: https://docs.iyk.app
- type: GettingStarted
  url: https://docs.iyk.app/api-quickstart
- type: Support
  url: https://discord.gg/ezppV2nj7w
- type: SignUp
  url: https://studio.iyk.app
- type: TermsOfService
  url: https://assets.iyk.app/iyk-terms-of-service.pdf
- type: PrivacyPolicy
  url: https://assets.iyk.app/iyk-privacy-policy.pdf
- type: LLMsTxt
  url: llms/iyk-llms.txt
- type: Authentication
  url: authentication/iyk-authentication.yml
- type: MCPServer
  url: mcp/iyk-mcp.yml
- type: Conventions
  url: conventions/iyk-conventions.yml
- type: DataModel
  url: data-model/iyk-data-model.yml
- type: WellKnown
  url: well-known/iyk-well-known.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

IYK