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 3 APIs on the APIs.io network. Tagged areas include Company, Payments, Cross-Border Payments, Fintech, and Education Payments.

The Flywire catalog on APIs.io includes 2 event-driven AsyncAPI specifications.

Flywire’s developer surface includes engineering blog, documentation, API reference, getting-started guide, sandbox, authentication, changelog, and 30 more developer resources.

🌐 Visit website 📡 Source on GitHub

60.1/100 strong ▬ flat Agent 25/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-09-19 · rubric v0.22.0

AccessApproval

3 APIs

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

Kin Score

Kin Score How this is scored →
scored 2026-09-19 · rubric v0.22.0

Composite quality — 60.1/100 · strong

Contract Quality 8.8 / 21

Developer Ergonomics 12.1 / 17

Access Clarity 7.4 / 17

Operational Transparency 6.1 / 11

Contract Governance 1.9 / 10

Discoverability 6.9 / 9

Regulatory Posture 14.1 / 15

Agent readiness — 25/100 · 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 7 / 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 Well-Known Document 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.

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/.

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/flywire: 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 →

APIs 3

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,...

Flywire Invoicing API

REST API for the Flywire Invoicing Platform — contacts, invoices, credit notes and invoice payments for a company, with search, count and export on each resource. Authorized wit...

Flywire Payment Request API

REST API for creating, retrieving, updating and removing payer-facing payment requests for a company, including instalment schedules. Requests are authenticated with an HMAC-SHA...

Pricing Plans 1

Published pricing tiers and plan structures.

Flywire Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Flywire Rate Limits

2 limits

RATE LIMITS

Event Specifications 2

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Flywire Non Payment Webhooks

ASYNCAPI

Flywire Payments Webhooks

ASYNCAPI

Security Posture 4

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

Flywire Authentication

apiKey/oauth2/http-signature · 3 schemes

SECURITY

Flywire Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Flywire Vulnerability Disclosure

Intigriti · security.txt · contact published

SECURITY

Flywire Trust Center

SOC 2, PCI DSS

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Flywire Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Login

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

X-MCPServerCandidate

X-MCPServerCandidate

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 8

Authentication, authorization, and security posture

TrustCenter

Compliance

Security

Authentication

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

OAuthScopes

OAuthScopes

Scroll for all 8

Operate 5

Status, limits, changes, and where to get help

StatusPage

ChangeLog

RateLimits

Support

HelpCenter

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

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: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source:
  - plans
  - authentication
  - scopes
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-09-02'
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: X-MCPServerCandidate
    url: mcp/flywire-mcp.yml
    note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list
      derived from the published API contracts, not an existing server. The scorer already read the manifest and reported
      mcp_server correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
  - type: RateLimits
    url: rate-limits/flywire-rate-limits.yml
- name: Flywire Invoicing API
  description: 'REST API for the Flywire Invoicing Platform — contacts, invoices, credit notes and invoice payments for a
    company, with search, count and export on each resource. Authorized with OAuth 2.0 client credentials and enforced on
    two axes: the token must carry the scope for the resource and operation, and it must be scoped to the company named in
    the URL. Documented on Flywire''s Solutions documentation estate, separately from the Payments API.'
  humanURL: https://solutions.flywire.com/en/invoicing/invoicing-api
  baseURL: https://invoicing.flywire.com
  tags:
  - Invoicing
  - Accounts Receivable
  - B2B Payments
  - Credit Notes
  properties:
  - type: Documentation
    url: https://solutions.flywire.com/en/invoicing/invoicing-api
  - type: APIReference
    url: https://solutions.flywire.com/en/invoicing/invoicing-api
  - type: Authentication
    url: authentication/flywire-authentication.yml
  - type: OAuthScopes
    url: scopes/flywire-scopes.yml
  - type: ErrorCatalog
    url: errors/flywire-problem-types.yml
  - type: Webhooks
    url: asyncapi/flywire-non-payment-webhooks.yml
  - type: ChangeLog
    url: changelog/flywire-changelog.yml
  - type: Conventions
    url: conventions/flywire-conventions.yml
  - type: DataModel
    url: data-model/flywire-data-model.yml
- name: Flywire Payment Request API
  description: REST API for creating, retrieving, updating and removing payer-facing payment requests for a company, including
    instalment schedules. Requests are authenticated with an HMAC-SHA256 digest of the request body sent in the X-Flywire-Digest
    header rather than a bearer token, and the surface has its own invoice/payment-request webhook lifecycle.
  humanURL: https://solutions.flywire.com/en/payment-requests/payment-request-api
  baseURL: https://app.flywire.com/rest/payment-request/public/company/
  tags:
  - Payment Requests
  - Instalments
  - Payments
  properties:
  - type: Documentation
    url: https://solutions.flywire.com/en/payment-requests/payment-request-api
  - type: APIReference
    url: https://solutions.flywire.com/en/payment-requests/payment-request-api
  - type: Authentication
    url: authentication/flywire-authentication.yml
  - type: Webhooks
    url: asyncapi/flywire-non-payment-webhooks.yml
  - type: ChangeLog
    url: changelog/flywire-changelog.yml
  - type: Sandbox
    url: sandbox/flywire-sandbox.yml
  - type: Conventions
    url: conventions/flywire-conventions.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/flywirecorp
- 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: X-MCPServerCandidate
  url: mcp/flywire-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/flywire-llms.txt
- type: ChangeLog
  url: changelog/flywire-changelog.yml
- type: RateLimits
  url: rate-limits/flywire-rate-limits.yml
- type: Plans
  url: plans/flywire-plans-pricing.yml
- type: OAuthScopes
  url: scopes/flywire-scopes.yml
- type: Support
  url: https://www.flywire.com/support
- type: HelpCenter
  url: https://help.flywire.com/
- type: Login
  url: https://app.flywire.com/
x-enrichment:
  date: '2026-09-02'
  status: enriched
  artifacts_added: 5
  pass: local-v1

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