aid: ravelin
name: Ravelin
description: Ravelin is a London-based fraud detection and prevention platform offering AI-native, real-time
  decisioning APIs for online merchants. Their products cover payment fraud, chargeback recovery, account
  takeover (ATO) protection, refund and policy abuse, marketplace and supplier fraud, and a PSP-agnostic 3D
  Secure server. Ravelin combines per-merchant machine learning models, graph network analysis, and a
  consortium database of identity signals to score every customer interaction across checkout, login,
  registration, and post-transaction events.
type: Index
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
- Fraud Prevention
- Fraud Detection
- Chargeback Prevention
- Account Takeover
- 3D Secure
- Risk Scoring
- Payments
- Machine Learning
url: https://raw.githubusercontent.com/api-evangelist/ravelin/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.19'
apis:
- aid: ravelin:ravelin-merchant-api
  name: Ravelin Merchant API
  description: The Ravelin Merchant API is a REST interface for submitting customer, order, transaction,
    payment, login, registration, voucher, supplier, dispute, refund, payout, and reclaim events to
    Ravelin and receiving back real-time risk decisions (ALLOW / REVIEW / PREVENT) with a 0-100 fraud
    score, the matched rules, and warnings. All endpoints are POST-only under https://api.ravelin.com,
    authenticated with a secret API key in the Authorization header, and respond with a structured
    decision envelope including action, source, score, scoreId, and any triggered rules.
  humanURL: https://developer.ravelin.com/merchant/
  baseURL: https://api.ravelin.com
  tags:
  - Fraud Prevention
  - Fraud Detection
  - Chargeback Prevention
  - Risk Scoring
  - Account Takeover
  properties:
  - type: Documentation
    url: https://developer.ravelin.com/merchant/
  - type: APIReference
    url: https://developer.ravelin.com/merchant/api/
  - type: Authentication
    url: https://developer.ravelin.com/merchant/api/authentication/
  - type: RateLimits
    url: https://developer.ravelin.com/merchant/api/rate-limits/
  - type: Errors
    url: https://developer.ravelin.com/merchant/api/errors/
  - type: Warnings
    url: https://developer.ravelin.com/merchant/api/warnings/
  - type: Guarantees
    url: https://developer.ravelin.com/merchant/api/guarantees/
  - type: TLS
    url: https://developer.ravelin.com/merchant/api/tls/
  - type: LoadTesting
    url: https://developer.ravelin.com/merchant/api/load-testing/
  - type: OpenAPI
    url: openapi/ravelin-merchant-api-openapi.yml
- aid: ravelin:ravelin-3ds-server-api
  name: Ravelin 3D Secure Server API
  description: A PSP-agnostic, PCI 3DS-validated 3D Secure Server API for authenticating cardholders
    under EMV 3DS 2.x. Provides the Authentication Request (AReq), Challenge, Result, and Version Lookup
    operations against 3ds.live.pci.ravelin.com. Supports dynamic exemption routing, card scheme-specific
    fields (CAVV/AAV/AEVV), liability shift signaling, and integration with iOS, Android, and
    browser-side SDKs.
  humanURL: https://developer.ravelin.com/merchant/api/endpoints/3d-secure/authenticate/
  baseURL: https://3ds.live.pci.ravelin.com
  tags:
  - 3D Secure
  - EMV 3DS
  - Strong Customer Authentication
  - PSD2
  - Payments
  properties:
  - type: Documentation
    url: https://developer.ravelin.com/merchant/api/endpoints/3d-secure/authenticate/
  - type: APIReference
    url: https://developer.ravelin.com/merchant/api/endpoints/3d-secure/
  - type: Errors
    url: https://developer.ravelin.com/merchant/api/endpoints/3d-secure/errors/
  - type: TestCards
    url: https://developer.ravelin.com/merchant/api/endpoints/3d-secure/test-cards/
  - type: ReferenceImplementation
    url: https://github.com/unravelin/ravelin-3ds-demo
  - type: OpenAPI
    url: openapi/ravelin-3ds-server-api-openapi.yml
- aid: ravelin:ravelin-psp-api
  name: Ravelin PSP API
  description: A purpose-built API surface for Payment Service Providers (PSPs) embedding Ravelin's
    risk scoring and dispute capture into their own merchant-facing product. Exposes Score,
    Transaction, Dispute, and the full 3D Secure operation set under the same authentication and
    decision envelope as the Merchant API.
  humanURL: https://developer.ravelin.com/
  baseURL: https://api.ravelin.com
  tags:
  - Fraud Prevention
  - Payment Service Provider
  - Risk Scoring
  - Disputes
  properties:
  - type: Documentation
    url: https://developer.ravelin.com/
  - type: Authentication
    url: https://developer.ravelin.com/merchant/api/authentication/
- aid: ravelin:ravelin-callbacks-api
  name: Ravelin Callbacks API
  description: Outbound webhook callbacks delivered by Ravelin to merchant-configured endpoints when
    manual reviews, order decisions, or refund decisions are completed in the Ravelin dashboard.
    Used to keep order-management, fulfillment, and customer-service systems in sync with Ravelin's
    human-in-the-loop review outcomes.
  humanURL: https://developer.ravelin.com/merchant/api/callbacks/order-decisions/
  tags:
  - Webhooks
  - Callbacks
  - Manual Review
  - Order Management
  properties:
  - type: Documentation
    url: https://developer.ravelin.com/merchant/api/callbacks/order-decisions/
  - type: APIReference
    url: https://developer.ravelin.com/merchant/api/callbacks/
  - type: OpenAPI
    url: openapi/ravelin-callbacks-api-openapi.yml
common:
- type: Website
  url: https://www.ravelin.com/
- type: Portal
  url: https://developer.ravelin.com/
- type: Documentation
  url: https://developer.ravelin.com/merchant/
- type: SignUp
  url: https://www.ravelin.com/contact-us
- type: Login
  url: https://dashboard.ravelin.com/
- type: Pricing
  url: https://www.ravelin.com/contact-us
- type: TermsOfService
  url: https://www.ravelin.com/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.ravelin.com/legal/privacy-policy
- type: Support
  url: https://support.ravelin.com/
- type: HelpCenter
  url: https://support.ravelin.com/
- type: Blog
  url: https://www.ravelin.com/blog
- type: ChangeLog
  url: https://updates.ravelin.com/en
- type: ReleaseNotes
  url: https://updates.ravelin.com/en
- type: Careers
  url: https://www.ravelin.com/careers
- type: ContactUs
  url: https://www.ravelin.com/contact-us
- type: GitHubOrganization
  url: https://github.com/unravelin
- type: LinkedIn
  url: https://www.linkedin.com/company/ravelin/
- type: Twitter
  url: https://twitter.com/ravelinhq
- type: SDK
  name: RavelinJS
  url: https://github.com/unravelin/ravelinjs
- type: SDK
  name: Ravelin Ruby
  url: https://github.com/unravelin/ravelin-ruby
- type: SDK
  name: Ravelin iOS Core SDK
  url: https://github.com/unravelin/ravelin-core-ios-xcframework-distribution
- type: SDK
  name: Ravelin iOS Encrypt SDK
  url: https://github.com/unravelin/ravelin-encrypt-ios-xcframework-distribution
- type: SDK
  name: Ravelin iOS 3DS SDK
  url: https://github.com/unravelin/ravelin-3ds-sdk-ios-xcframework-distribution
- type: SDK
  name: Ravelin Android (Core and 3DS)
  url: https://developer.ravelin.com/merchant/libraries-and-sdks/android/core-sdk/android/
- type: ReferenceImplementation
  name: Ravelin 3DS Server Reference Integration
  url: https://github.com/unravelin/ravelin-3ds-demo
- type: Compliance
  name: PCI-DSS
  url: https://www.ravelin.com/
- type: Compliance
  name: PCI 3DS
  url: https://www.ravelin.com/
- type: Compliance
  name: ISO 27001:2022
  url: https://www.ravelin.com/
- name: Features
  type: Features
  data:
  - name: Per-Merchant Machine Learning
    description: Custom ML models trained and tuned to each merchant's traffic, products, and fraud
      patterns rather than a single global model.
  - name: Graph Network Analysis
    description: Link analysis across customers, devices, payment instruments, and addresses to
      surface hidden fraud rings and shared-identity clusters.
  - name: Consortium Identity Database
    description: A shared identity-signals consortium spanning 9+ billion identity elements used to
      enrich risk scoring across all merchants.
  - name: Real-Time Decisioning
    description: ALLOW / REVIEW / PREVENT decisions returned synchronously on every checkout, login,
      registration, voucher, and transaction event.
  - name: PSP-Agnostic 3D Secure
    description: A 3DS Server that works with any acquirer or PSP, supports dynamic exemption routing,
      and is bundled with native iOS and Android 3DS SDKs.
  - name: Manual Review Workflow
    description: Built-in dashboard for human review of borderline cases with webhook callbacks to
      sync decisions back to the merchant's order management system.
  - name: Rules Engine
    description: Merchant-authored rules layered on top of ML scores, executed in active or passive
      mode so new rules can be safely shadow-tested before going live.
  - name: Per-Customer Rate Limiting
    description: A built-in 50 events-per-minute-per-customer guardrail that returns a PREVENT action
      with source RATE_LIMIT to defend against scripted abuse.
- name: UseCases
  type: UseCases
  data:
  - name: Online Payment Fraud and Chargeback Prevention
    description: Scoring checkout and transaction events to block fraudulent orders before they ship
      and reduce card scheme chargebacks.
  - name: Account Takeover (ATO) Protection
    description: Risk-scoring login events to detect credential stuffing, breach reuse, and session
      hijacking attempts in real time.
  - name: Refund and Policy Abuse
    description: Detecting customers who systematically exploit refund, return, and goodwill policies
      across orders and channels.
  - name: Promo, Voucher, and Loyalty Abuse
    description: Scoring voucher and promo redemption events to stop bonus stacking, multi-accounting,
      and referral fraud.
  - name: Marketplace and Supplier Fraud
    description: Risk-scoring suppliers, drivers, couriers, sellers, and other marketplace participants
      to detect collusion and onboarding fraud.
  - name: 3D Secure and SCA Optimization
    description: Running EMV 3DS 2.x authentication through Ravelin's 3DS Server with dynamic
      exemption routing to maximize approval and shift liability where appropriate.
- name: Integrations
  type: Integrations
  data:
  - name: Payment Service Providers
    description: Integrates with major PSPs and acquirers via the PSP API and the PSP-agnostic 3DS
      Server.
  - name: Order Management Systems
    description: Order, refund, and manual-review decisions are pushed to downstream OMS via webhook
      callbacks.
  - name: iOS Applications
    description: Native iOS Core, Encrypt, and 3DS SDKs distributed as XCFrameworks.
  - name: Android Applications
    description: Native Android Core and 3DS SDKs with bundled ProGuard rules.
  - name: Web Applications
    description: RavelinJS browser SDK for device fingerprinting, encryption, and 3DS browser flows.
- name: Solutions
  type: Solutions
  data:
  - name: Payment Fraud
    description: End-to-end protection of the checkout and transaction surface for online merchants.
  - name: Account Security
    description: Login, registration, and credential-event scoring for ATO prevention.
  - name: Refund Abuse
    description: Detection of refund and return abuse across orders and channels.
  - name: Marketplace Risk
    description: Supplier, courier, and seller risk scoring for marketplaces and gig platforms.
  - name: 3D Secure and Transaction Optimization
    description: PSP-agnostic 3DS Server with exemption routing and native mobile SDKs.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com