KakaoPay

KakaoPay is a Korean mobile payment platform and fintech service by Kakao Corp providing REST APIs for payment processing, QR code payments, online checkout, subscription billing, money transfers, and financial product management. The platform enables merchants and developers to integrate KakaoPay's payment infrastructure via secure REST APIs authenticated with admin keys or bearer tokens.

KakaoPay is listed with 4 APIs on the APIs.io network. Tagged areas include Payments, Mobile Payments, QR Code Payments, Subscription Billing, and Money Transfer.

KakaoPay’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

14.0/100 emerging ▬ flat Agent 1/100 human only saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

4 APIs

Payments Mobile Payments QR Code Payments Subscription Billing Money Transfer Fintech Korean REST API

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 14.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 2.7 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.0 / 10

Discoverability 6.1 / 9

Regulatory Posture 0.8 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points
Access Clarity scores 15.8 — up to +16.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/kakaopay/apis.yml: open an issue on github.com/api-evangelist/kakaopay to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
x402 Micropayments & Agentic Pay-per-Call	regulated	36.4 (thin)	-	-
Mobile SDK Publishers (Play SDK Index, CocoaPods, ADA certification)	regulated	36.4 (thin)	-	-
Korea MyData (licensed MyData operators, authentication bodies and information providers)	regulated	36.4 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 4

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

KakaoPay Online Payment API

REST API for integrating KakaoPay online payment functionality into PC and mobile web or app environments. Supports single payments, subscription (recurring) billing, order inqu...

KakaoPay Login API

REST API providing KakaoPay authentication services including token issuance, token refresh, user information retrieval, and consent management. Enables applications to authenti...

KakaoPay Money Transfer API

REST API for code-based money transfers, enabling users to send and receive money via generated links. Supports money transfer link generation, retrieval, deletion, bill-splitti...

KakaoPay Face Recognition API

REST API providing facial detection and comparison capabilities for identity verification and authentication within KakaoPay financial services.

KakaoPay API pricing

Not yet checked against KakaoPay's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure.

Plan	Price
Free Tier	—
Paid API Usage	—

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Kakaopay Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Kakaopay Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Kakaopay Finops

FINOPS

Security Posture 1

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

Kakaopay Domain Security

TLSv1.2 · HSTS

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: kakaopay
name: KakaoPay
description: KakaoPay is a Korean mobile payment platform and fintech service by Kakao Corp providing REST APIs for payment
  processing, QR code payments, online checkout, subscription billing, money transfers, and financial product management.
  The platform enables merchants and developers to integrate KakaoPay's payment infrastructure via secure REST APIs authenticated
  with admin keys or bearer tokens.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kakaopay.png
url: https://raw.githubusercontent.com/api-evangelist/kakaopay/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Payments
- Mobile Payments
- QR Code Payments
- Subscription Billing
- Money Transfer
- Fintech
- Korean
- REST API
apis:
- name: KakaoPay Online Payment API
  description: REST API for integrating KakaoPay online payment functionality into PC and mobile web or app environments.
    Supports single payments, subscription (recurring) billing, order inquiry, and payment cancellation. Uses admin key authentication
    via Authorization header.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.kakaopay.com/docs/payment/online-payment/single-payment
  baseURL: https://open-api.kakaopay.com
  tags:
  - Online Payment
  - Single Payment
  - Subscription
  - Payment Cancellation
  properties:
  - type: Documentation
    url: https://developers.kakaopay.com/docs/payment/online-payment/single-payment
- name: KakaoPay Login API
  description: REST API providing KakaoPay authentication services including token issuance, token refresh, user information
    retrieval, and consent management. Enables applications to authenticate users via their KakaoPay credentials.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.kakaopay.com/docs
  baseURL: https://kapi.kakao.com
  tags:
  - Authentication
  - Login
  - OAuth
  - Tokens
  tags_raw:
  - Authentication
  - Login
  - OAuth
  - Token
  properties:
  - type: Documentation
    url: https://developers.kakaopay.com/docs
- name: KakaoPay Money Transfer API
  description: REST API for code-based money transfers, enabling users to send and receive money via generated links. Supports
    money transfer link generation, retrieval, deletion, bill-splitting settlements, and service deregistration.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.kakaopay.com/docs
  baseURL: https://open-api.kakaopay.com
  tags:
  - Money Transfer
  - Remittances
  - Bill Splitting
  tags_raw:
  - Money Transfer
  - Remittance
  - Bill Splitting
  properties:
  - type: Documentation
    url: https://developers.kakaopay.com/docs
- name: KakaoPay Face Recognition API
  description: REST API providing facial detection and comparison capabilities for identity verification and authentication
    within KakaoPay financial services.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.kakaopay.com/docs
  baseURL: https://open-api.kakaopay.com
  tags:
  - Face Recognition
  - Biometrics
  - Identity Verification
  properties:
  - type: Documentation
    url: https://developers.kakaopay.com/docs
common:
- type: DomainSecurity
  url: security/kakaopay-domain-security.yml
- type: Website
  url: https://www.kakaopay.com
- type: Documentation
  url: https://developers.kakaopay.com/docs
- type: GitHubOrg
  url: https://github.com/kakaopay
- type: LinkedIn
  url: https://www.linkedin.com/company/kakaopay
- type: Blog
  url: https://tech.kakaopay.com
- type: Pricing
  url: https://developers.kakao.com/docs/latest/en/app-setting/paid-api
- type: StatusPage
  url: https://developers.kakaopay.com
- type: X
  url: https://x.com/kakaocorpglobal
- type: Plans
  url: plans/kakaopay-plans-pricing.yml
- type: RateLimits
  url: rate-limits/kakaopay-rate-limits.yml
- type: FinOps
  url: finops/kakaopay-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

KakaoPay API — frequently asked questions

Does KakaoPay have an API?

Yes. APIs.io lists 4 APIs from KakaoPay, including KakaoPay Online Payment API, KakaoPay Login API and KakaoPay Money Transfer API, and 1 more.

How much does the KakaoPay API cost?

APIs.io lists 2 pricing plans for KakaoPay, with each plan's price, limits and inclusions under Pricing on this page.

Is the KakaoPay API ready for AI agents?

KakaoPay has a Kin Score of 14.0 out of 100 (emerging) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-06.

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