KOMOJU

KOMOJU is a Japan-focused global payment gateway operated by Degica. Its REST API lets web and e-commerce merchants accept a wide range of local and international payment methods through one interface - credit cards, convenience store (konbini) cash payments, bank transfer, Pay-easy (ATM), and e-money / mobile wallets such as PayPay, Merpay, au PAY, Rakuten Pay, LINE Pay, Alipay, and WeChat Pay - plus a hosted checkout (Sessions), tokenization, saved customers, subscriptions, and webhook events. Base URL is https://komoju.com/api/v1 with HTTP Basic authentication using a secret or publishable API key.

KOMOJU publishes 8 API contracts indexed on the APIs.io network, including Barcodes API, Customers API, Events API, and 5 more. Tagged areas include Payments, Payment Gateway, Japan, Konbini, and Cards.

KOMOJU’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.1/100 emerging ▬ flat Agent 21/100 agent aware Front door AI 3/6 light saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessPaidOpen

1 published contract

Payments Payment Gateway JapanKonbiniCardsPayPayBank Transfers E-Money Checkout Fintech

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Subscription Billing & Revenue Management

BC-4250

PaymentsSessions

POST /payments POST /payments/{id}/capture POST /payments/{id}/refund POST /sessions

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 26.1/100 · emerging

Contract Quality 9.8 / 19

Developer Ergonomics 4.1 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.0 / 10

Contract Governance 0.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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 0 / 5

Distinct Operations 3 / 3

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/komoju/"><img src="https://apis.io/badge/komoju/card.svg" alt="KOMOJU on APIs.io — Kin Score by API Evangelist"></a>

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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 github.com/api-evangelist/komoju: open an issue to ask a question, or submit a pull request to add artifacts. 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
Japan FSA Registered Fintech (crypto exchanges, stablecoin intermediaries, funds transfer, bank-API agents, prepaid)	undeclared	-	-	-
EU/EEA Payment and E-Money Institutions (PSD2 passports)	undeclared	-	-	-
E-commerce Extension Marketplaces (Adobe Commerce / Magento, Shopware)	undeclared	-	-	-

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 8

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

KOMOJU Barcodes API

Konbini payment barcodes for compatible convenience-store payments.

KOMOJU Customers API

Store and manage customers with saved payment details for reuse.

KOMOJU Events API

Webhook events emitted by KOMOJU, queryable after the fact.

KOMOJU Payment Methods API

List the payment methods available to the authenticated merchant.

KOMOJU Payments API

Create, capture, refund, cancel, and query payments across all payment methods.

KOMOJU Sessions API

Hosted checkout sessions that collect payment or customer details.

KOMOJU Subscriptions API

Recurring payments charged against a saved customer.

KOMOJU Tokens API

Tokenize payment details (short-term tokens and 3DS secure tokens).

Scroll for all 8

Open Collections 9

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

KOMOJU Barcodes API

OPEN COLLECTION

KOMOJU Barcodes Customers API

OPEN COLLECTION

KOMOJU Barcodes Events API

OPEN COLLECTION

KOMOJU Barcodes Payment Methods API

OPEN COLLECTION

KOMOJU Barcodes Payments API

OPEN COLLECTION

KOMOJU Barcodes Sessions API

OPEN COLLECTION

KOMOJU Barcodes Subscriptions API

OPEN COLLECTION

KOMOJU Barcodes Tokens API

OPEN COLLECTION

KOMOJU API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Komoju Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Komoju Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Komoju Finops

FINOPS

Security Posture 2

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

Komoju Authentication

http · 1 scheme

SECURITY

Komoju Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Komoju Agentic Access

28 operations · 16 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: komoju
url: https://raw.githubusercontent.com/api-evangelist/komoju/refs/heads/main/apis.yml
name: KOMOJU
kind: company
description: KOMOJU is a Japan-focused global payment gateway operated by Degica. Its REST API lets web and e-commerce merchants
  accept a wide range of local and international payment methods through one interface - credit cards, convenience store (konbini)
  cash payments, bank transfer, Pay-easy (ATM), and e-money / mobile wallets such as PayPay, Merpay, au PAY, Rakuten Pay,
  LINE Pay, Alipay, and WeChat Pay - plus a hosted checkout (Sessions), tokenization, saved customers, subscriptions, and
  webhook events. Base URL is https://komoju.com/api/v1 with HTTP Basic authentication using a secret or publishable API key.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: open
  trial: false
  try_now: false
  public: true
  label: Paid · Open access
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/komoju.png
tags:
- Payments
- Payment Gateway
- Japan
- Konbini
- Cards
- PayPay
- Bank Transfers
- E-Money
- Checkout
- Fintech
tags_raw:
- Payments
- Payment Gateway
- Japan
- Konbini
- Cards
- PayPay
- Bank Transfer
- E-Money
- Checkout
- Fintech
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.23'
apis:
- aid: komoju:komoju-barcodes-api
  name: KOMOJU Barcodes API
  description: Konbini payment barcodes for compatible convenience-store payments.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Barcodes
  properties:
  - type: OpenAPI
    url: openapi/komoju-barcodes-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-customers-api
  name: KOMOJU Customers API
  description: Store and manage customers with saved payment details for reuse.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/komoju-customers-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-events-api
  name: KOMOJU Events API
  description: Webhook events emitted by KOMOJU, queryable after the fact.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/komoju-events-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-payment-methods-api
  name: KOMOJU Payment Methods API
  description: List the payment methods available to the authenticated merchant.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Payment Methods
  properties:
  - type: OpenAPI
    url: openapi/komoju-payment-methods-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-payments-api
  name: KOMOJU Payments API
  description: Create, capture, refund, cancel, and query payments across all payment methods.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/komoju-payments-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-sessions-api
  name: KOMOJU Sessions API
  description: Hosted checkout sessions that collect payment or customer details.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/komoju-sessions-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-subscriptions-api
  name: KOMOJU Subscriptions API
  description: Recurring payments charged against a saved customer.
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Subscription
  tags_raw:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/komoju-subscriptions-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
- aid: komoju:komoju-tokens-api
  name: KOMOJU Tokens API
  description: Tokenize payment details (short-term tokens and 3DS secure tokens).
  humanURL: https://doc.komoju.com/reference/payments
  baseURL: https://komoju.com/api/v1
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/komoju-tokens-api-openapi.yml
  - type: Documentation
    url: https://doc.komoju.com/docs/creating-payments-directly
  - type: APIReference
    url: https://doc.komoju.com/reference/payments
  - type: PostmanCollection
    url: collections/komoju.postman_collection.json
  - type: OpenCollection
    url: collections/komoju.opencollection.json
  - type: Documentation
    url: https://doc.komoju.com/docs/hosted-page-integration-guide
  - type: APIReference
    url: https://doc.komoju.com/reference/sessions
  - type: Documentation
    url: https://doc.komoju.com/docs/tokenizing-payment-details
  - type: APIReference
    url: https://doc.komoju.com/reference/tokens
  - type: Documentation
    url: https://doc.komoju.com/docs/long-term-tokens
  - type: APIReference
    url: https://doc.komoju.com/reference/createcustomer
  - type: APIReference
    url: https://doc.komoju.com/reference/subscriptions
  - type: Documentation
    url: https://doc.komoju.com/supported-payment-methods
  - type: APIReference
    url: https://doc.komoju.com/reference/listpaymentmethods
  - type: Documentation
    url: https://doc.komoju.com/docs/webhooks
  - type: APIReference
    url: https://doc.komoju.com/reference/listevents
common:
- type: CapabilityMap
  url: capabilities/komoju-capability-edges.yml
  name: KOMOJU Business Capability Map
- type: AgenticAccess
  url: agentic-access/komoju-agentic-access.yml
- type: DomainSecurity
  url: security/komoju-domain-security.yml
- type: Authentication
  url: authentication/komoju-authentication.yml
- type: GitHubOrganization
  url: https://github.com/komoju
- type: LinkedIn
  url: https://www.linkedin.com/company/komoju
- type: Website
  url: https://en.komoju.com
- type: Documentation
  url: https://doc.komoju.com
- type: Plans
  url: plans/komoju-plans-pricing.yml
- type: RateLimits
  url: rate-limits/komoju-rate-limits.yml
- type: FinOps
  url: finops/komoju-finops.yml
- url: https://en.komoju.com/blog/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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