aid: sift url: https://raw.githubusercontent.com/api-evangelist/sift/refs/heads/main/apis.yml name: Sift kind: company description: Sift is a digital trust and safety platform that uses machine learning to detect and prevent online fraud and abuse - payment fraud, account takeover, account abuse, content abuse, and promotion abuse. Applications stream user events to the Sift Events API, retrieve real-time risk Sift Scores (0-100) per abuse type, and act on them through the Decisions API, automated Workflows, verification (OTP), and PSP merchant risk management. Sift exposes a documented public REST API over HTTPS at https://api.sift.com with API-key authentication. image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg tags: - Fraud Detection - Fraud Prevention - Risk - Trust and Safety - Machine Learning - Payment Fraud - Account Takeover - Chargebacks - Digital Trust created: '2026-07-12' modified: '2026-07-12' specificationVersion: '0.19' apis: - aid: sift:sift-events-api name: Sift Events API tags: - Events - Fraud Detection - Machine Learning image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/events-api/overview baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/events-api/overview type: Documentation - url: https://developers.sift.com/docs/curl/apis-overview type: APIReference - url: openapi/sift-openapi.yml type: OpenAPI description: Streams user activity - account creation, logins, orders, transactions, content, chargebacks, and more - to Sift's machine learning models via POST /v205/events. Supports both reserved event types (prefixed with $) and custom events, and can return a real-time Sift Score inline with return_score=true. - aid: sift:sift-score-api name: Sift Score API tags: - Risk - Score - Fraud Detection image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/score-api/overview baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/score-api/overview type: Documentation - url: openapi/sift-openapi.yml type: OpenAPI description: Retrieves a user's real-time Sift Score (0-100, higher is riskier) per abuse type - payment_abuse, account_abuse, account_takeover, content_abuse, and promotion_abuse - along with reason codes. Includes synchronous score endpoints that fetch the latest score or rescore a user on demand. - aid: sift:sift-decisions-api name: Sift Decisions API tags: - Decisions - Trust and Safety - Workflow image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/decisions-api/overview baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/decisions-api/overview type: Documentation - url: openapi/sift-openapi.yml type: OpenAPI description: Applies and retrieves decisions (accept, watch, block) against Sift entities - users, orders, sessions, and content - scoped to an account. Decisions record the outcome of manual or automated review, feed Sift's models, and trigger downstream webhooks. The modern replacement for the legacy Labels API. - aid: sift:sift-workflow-status-api name: Sift Workflow Status API tags: - Workflow - Automation - Decisions image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/workflows-api/workflow-decisions baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/workflows-api/workflow-decisions type: Documentation - url: openapi/sift-openapi.yml type: OpenAPI description: Retrieves the status and results of a Sift Workflow run by run_id, including the decisions a workflow applied to an entity. Workflows automate scoring, routing, and decisioning based on Sift Scores and business rules. - aid: sift:sift-labels-api name: Sift Labels API tags: - Labels - Training - Legacy image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/labels-api/overview baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/labels-api/overview type: Documentation - url: openapi/sift-openapi.yml type: OpenAPI description: Legacy API for labeling a user as good or bad for a given abuse type to train Sift's models via POST and DELETE /v205/users/{user_id}/labels. Sift recommends the Decisions API for new integrations; Labels remain documented for backfilling historical fraud outcomes. - aid: sift:sift-verification-api name: Sift Verification API tags: - Verification - OTP - Account Takeover image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/verification-api/overview baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/verification-api/overview type: Documentation - url: openapi/sift-openapi.yml type: OpenAPI description: Step-up verification for high-risk actions. Sends, resends, and checks one-time passcodes (OTP) via POST /v1/verification/send, /resend, and /check to confirm a user's identity and mitigate account takeover. - aid: sift:sift-psp-merchant-management-api name: Sift PSP Merchant Management API tags: - PSP - Payment Fraud - Merchant Risk image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://developers.sift.com/docs/curl/psp-merchant-management-api/overview baseURL: https://api.sift.com properties: - url: https://developers.sift.com/docs/curl/psp-merchant-management-api/overview type: Documentation - url: openapi/sift-openapi.yml type: OpenAPI description: For payment service providers and marketplaces - create, update, list, and retrieve sub-merchant profiles under an account so Sift can monitor merchant onboarding and transaction risk across a payments portfolio. common: - type: AgenticAccess url: agentic-access/sift-agentic-access.yml - type: DomainSecurity url: security/sift-domain-security.yml - type: Authentication url: authentication/sift-authentication.yml - type: GitHubOrganization url: https://github.com/SiftScience - type: LinkedIn url: https://www.linkedin.com/company/sift-science - type: Website url: https://sift.com - type: Documentation url: https://developers.sift.com/docs - type: Plans url: plans/sift-plans-pricing.yml - type: RateLimits url: rate-limits/sift-rate-limits.yml - type: FinOps url: finops/sift-finops.yml - url: https://sift.com/blog type: Blog maintainers: - FN: Kin Lane email: kin@apievangelist.com