Flywire

Flywire is a global payments enablement and software company that operates a proprietary cross-border payment network spanning more than 140 currencies and 240 countries and territories, serving the education, healthcare, travel, and business-to-business verticals. The Flywire Payments API is an HTTP-based REST API (JSON request/response bodies, API-Key authorization) that lets platforms integrate Flywire's payment network directly — creating and capturing one-off, recurring, pre-authorization, refund, and 529 payments, managing payors, recipients, checkout sessions and documents, and receiving real-time payment status callbacks (webhooks) signed with an HMAC-SHA256 shared secret. Flywire also ships client-side JavaScript and React libraries (Flywire Elements, Checkout, Pay-By-Link) for embedding hosted payment experiences.

Flywire publishes 1 API on the APIs.io network. Tagged areas include Company, Payments, Cross-Border Payments, Fintech, and Education Payments.

The Flywire catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Flywire’s developer surface includes engineering blog, documentation, API reference, getting-started guide, sandbox, authentication, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

48.0/100 developing ▬ flat Agent 23/100 agent aware saas Full breakdown ↓
scored 2026-08-30 · rubric v0.17.2

AccessSelf serve

1 APIs 1 MCP Servers

Company Payments Cross-Border Payments FintechEducation PaymentsHealthcare PaymentsTravel PaymentsB2B Payments Checkout Webhook

Kin Score

Kin Score How this is scored →
scored 2026-08-30 · rubric v0.17.2

Composite quality — 48.0/100 · developing

Contract Quality 9.1 / 21

Developer Ergonomics 11.3 / 17

Access Clarity 6.3 / 17

Operational Transparency 1.2 / 11

Contract Governance 1.9 / 10

Discoverability 6.5 / 9

Regulatory Posture 10.3 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 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 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 Surface 0 / 5

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/flywire: 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.

Flywire Payments API

REST API for integrating Flywire's global payment network — one-off, recurring, pre-authorization, refund and 529 payments, checkout sessions, payors, recipients, and documents,...

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

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

MCPServer

MCPServer

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Components

Conventions

ErrorCatalog

Lifecycle

Webhooks

Conformance

DataModel

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 7

Authentication, authorization, and security posture

TrustCenter

Compliance

Security

Authentication

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 7

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Source (apis.yml)

aid: flywire
name: Flywire
description: Flywire is a global payments enablement and software company that operates a proprietary cross-border payment
  network spanning more than 140 currencies and 240 countries and territories, serving the education, healthcare, travel,
  and business-to-business verticals. The Flywire Payments API is an HTTP-based REST API (JSON request/response bodies, API-Key
  authorization) that lets platforms integrate Flywire's payment network directly — creating and capturing one-off, recurring,
  pre-authorization, refund, and 529 payments, managing payors, recipients, checkout sessions and documents, and receiving
  real-time payment status callbacks (webhooks) signed with an HMAC-SHA256 shared secret. Flywire also ships client-side JavaScript
  and React libraries (Flywire Elements, Checkout, Pay-By-Link) for embedding hosted payment experiences.
url: https://raw.githubusercontent.com/api-evangelist/flywire/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- accel
- bain-capital-ventures
- balderton-capital
- qed-investors
x-tier: stub
x-tier-reason: portfolio-lead
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: 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
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Payments
- Cross-Border Payments
- Fintech
- Education Payments
- Healthcare Payments
- Travel Payments
- B2B Payments
- Checkout
- Webhook
tags_raw:
- Company
- Payments
- Cross-Border Payments
- FinTech
- Education Payments
- Healthcare Payments
- Travel Payments
- B2B Payments
- Checkout
- Webhooks
image: https://www.flywire.com/favicon.ico
apis:
- name: Flywire Payments API
  description: REST API for integrating Flywire's global payment network — one-off, recurring, pre-authorization, refund and
    529 payments, checkout sessions, payors, recipients, and documents, with real-time payment-status callbacks.
  humanURL: https://developers.flywire.com/education/Content/api-landing-page.htm
  baseURL: https://api-platform.flywire.com/payments/v1/
  tags:
  - Payments
  - Cross-Border Payments
  - Refunds
  properties:
  - type: Documentation
    url: https://developers.flywire.com/education/Content/api-basics.htm
  - type: APIReference
    url: https://developers.flywire.com/education/Content/api-reference.htm
  - type: Sandbox
    url: sandbox/flywire-sandbox.yml
  - type: Authentication
    url: authentication/flywire-authentication.yml
  - type: ErrorCatalog
    url: errors/flywire-problem-types.yml
  - type: Webhooks
    url: asyncapi/flywire-payments-webhooks.yml
  - type: Conventions
    url: conventions/flywire-conventions.yml
  - type: DataModel
    url: data-model/flywire-data-model.yml
  - type: MCPServer
    url: mcp/flywire-mcp.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Blog
  url: https://www.flywire.com/company/news
- type: TrustCenter
  url: security/flywire-trust-center.yml
- type: Website
  url: https://www.flywire.com
- type: DeveloperPortal
  url: https://developers.flywire.com/
- type: Documentation
  url: https://developers.flywire.com/education/Content/home.htm
- type: APIReference
  url: https://developers.flywire.com/education/Content/api-reference.htm
- type: GettingStarted
  url: https://developers.flywire.com/education/Content/api-basics.htm
- type: StatusPage
  url: https://status.flywire.com/
- type: TermsOfService
  url: https://www.flywire.com/legal/terms-of-use
- type: PrivacyPolicy
  url: https://www.flywire.com/legal/privacy-policy
- type: GitHubOrganization
  url: https://github.com/peertransfer
- type: Compliance
  url: https://www.flywire.com/company/security
- type: Security
  url: https://app.intigriti.com/programs/flywire/flywirevulnerabilitydiscloseprogram/
- type: Packages
  url: packages/flywire-packages.yml
- type: SDKs
  url: packages/flywire-packages.yml
- type: Components
  url: components/flywire-components.yml
- type: Sandbox
  url: sandbox/flywire-sandbox.yml
- type: Authentication
  url: authentication/flywire-authentication.yml
- type: Conventions
  url: conventions/flywire-conventions.yml
- type: ErrorCatalog
  url: errors/flywire-problem-types.yml
- type: Lifecycle
  url: lifecycle/flywire-lifecycle.yml
- type: Webhooks
  url: asyncapi/flywire-payments-webhooks.yml
- type: Conformance
  url: conformance/flywire-conformance.yml
- type: DataModel
  url: data-model/flywire-data-model.yml
- type: WellKnown
  url: well-known/flywire-well-known.yml
- type: SecurityTxt
  url: well-known/flywire-security.txt
- type: VulnerabilityDisclosure
  url: security/flywire-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/flywire-domain-security.yml
- type: MCPServer
  url: mcp/flywire-mcp.yml
- type: LLMsTxt
  url: llms/flywire-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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Flywire

Kin Score

APIs 1

Flywire Payments API

MCP Servers 1

Flywire MCP Server

Event Specifications 1

Flywire Payments Webhooks

Security Posture 4

Flywire Authentication

Flywire Domain Security

Flywire Vulnerability Disclosure

Flywire Trust Center

Resources