Afterpay

Afterpay (acquired by Block / Square) is a buy-now-pay-later platform offering Pay-in-4 installments at thousands of merchants. APIs for merchants to integrate via Square or direct.

Afterpay publishes 3 APIs on the APIs.io network. Tagged areas include Fintech, BNPL, Payments, Consumer, and Block.

🌐 Visit website 📡 Source on GitHub

26.4/100 emerging ▲ 7.2 Agent 19/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

3 APIs

FintechBNPLPaymentsConsumerBlock

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 26.4/100 · emerging

Contract Quality 12.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 3.4 / 13

Governance 0.0 / 12

Discoverability 6.5 / 10

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

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

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/afterpay: 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 3

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

Afterpay Checkout API

Create and confirm Afterpay checkouts for merchant integrations.

Afterpay Payments API

Auth, capture, void and refund Afterpay payments.

Afterpay Configuration API

Retrieve merchant-level configuration and supported regions.

GraphQL 1

GraphQL schemas published by this provider.

Afterpay GraphQL Schema

This is a conceptual GraphQL schema for the Afterpay (Clearpay) Buy Now Pay Later (BNPL) API. Afterpay is a payment platform that allows merchants to offer installment-based pay...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Afterpay Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Afterpay Rate Limits

1 limits

RATE LIMITS

FinOps 1

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

Afterpay Finops

FINOPS

Security Posture 2

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

Afterpay Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Afterpay Vulnerability Disclosure

Bugcrowd · security.txt · contact published

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

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 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: afterpay
url: https://raw.githubusercontent.com/api-evangelist/afterpay/refs/heads/main/apis.yml
name: Afterpay
kind: company
description: Afterpay (acquired by Block / Square) is a buy-now-pay-later platform offering Pay-in-4 installments at thousands
  of merchants. APIs for merchants to integrate via Square or direct.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/afterpay.png
tags:
- Fintech
- BNPL
- Payments
- Consumer
- Block
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
apis:
- name: Afterpay Checkout API
  description: Create and confirm Afterpay checkouts for merchant integrations.
  humanURL: https://developers.afterpay.com/afterpay-online/reference
  baseURL: https://api.afterpay.com
  tags:
  - Checkout
  - BNPL
  properties:
  - type: Documentation
    url: https://developers.afterpay.com/afterpay-online/reference
  - url: graphql/afterpay-graphql.md
    type: GraphQL
- name: Afterpay Payments API
  description: Auth, capture, void and refund Afterpay payments.
  humanURL: https://developers.afterpay.com/afterpay-online/reference
  baseURL: https://api.afterpay.com
  tags:
  - Payments
  properties:
  - type: Documentation
    url: https://developers.afterpay.com/afterpay-online/reference
- name: Afterpay Configuration API
  description: Retrieve merchant-level configuration and supported regions.
  humanURL: https://developers.afterpay.com/afterpay-online/reference
  baseURL: https://api.afterpay.com
  tags:
  - Configuration
  properties:
  - type: Documentation
    url: https://developers.afterpay.com/afterpay-online/reference
common:
- type: VulnerabilityDisclosure
  url: security/afterpay-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/afterpay-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/afterpay
- type: LinkedIn
  url: https://www.linkedin.com/company/afterpay-com-au
- type: Website
  url: https://www.afterpay.com/
- type: Plans
  url: plans/afterpay-plans-pricing.yml
- type: RateLimits
  url: rate-limits/afterpay-rate-limits.yml
- type: FinOps
  url: finops/afterpay-finops.yml
- type: LlmsText
  url: https://developers.afterpay.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com