Sift
Sift (formerly Sift Science) is the San Francisco-based Digital Trust and Safety platform that protects more than 700 global brands from payment fraud, account takeover, content abuse, promotion abuse, and money movement risk. Sift's APIs ingest user, device, payment, content, and verification events, return real-time risk scores per abuse type, automate decisions through Workflows, ship a Verification API for step-up challenges, and operate a Console for analyst case management. Sift was founded in 2011, processes more than one trillion events per year, and reports a median annual loss prevented of about $4.2M per customer.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Sift the way a machine reads it — 75 machine-readable artifacts across 6 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Sift scores 66.4/100 (strong), with a separate agent-readiness read of 21/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Sift
Each block below is one kind of artifact we hold for Sift. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 6
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Sift Decisions API
Apply and retrieve decisions on Sift entities.
Sift Events API
Send fraud and abuse signals to Sift for scoring.
Sift Labels API
Apply and remove fraud labels on Sift users.
Sift Scores API
Retrieve and recompute Sift risk scores.
Sift Verification API
Send, resend, and check verification challenges.
Sift Workflows API
Inspect Sift Workflow evaluations.
Postman Collections 6
A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.
Ready-to-run Postman collections for exercising this provider's APIs.
Sift Decisions API
POSTMANSift Events API
POSTMANSift Labels API
POSTMANSift Score API
POSTMANSift Verification API
POSTMANSift Workflows API
POSTMANOpen Collections 13
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONSift Decisions API
OPEN COLLECTIONSift Decisions Events API
OPEN COLLECTIONSift Decisions Labels API
OPEN COLLECTIONSift Decisions Scores API
OPEN COLLECTIONSift Decisions Verification API
OPEN COLLECTIONSift Decisions Workflows API
OPEN COLLECTIONSift Decisions API
OPEN COLLECTIONSift Events API
OPEN COLLECTIONSift Labels API
OPEN COLLECTIONSift Score API
OPEN COLLECTIONSift Verification API
OPEN COLLECTIONSift Workflows API
OPEN COLLECTIONScroll within the panel for all 13 ·
Arazzo Workflows 7
Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.
Multi-step API workflows described with the Arazzo specification.
Sift Chargeback Label And Rescore
Record a chargeback, label the user as fraudulent, and force a fresh score.
ARAZZOSift Login Step-Up Verification
Score a login for account takeover and require verification when risk is high.
ARAZZOSift Manual Review And Decide User
Pull a user's score, resolve a valid decision, apply it, and confirm the result.
ARAZZOSift Screen Account Creation
Score a new account on signup and decision the user when risk is high.
ARAZZOSift Screen Order And Transaction
Score an order, confirm payment risk with the user score, and decision the order.
ARAZZOSift Transaction Score And Decide
Score a transaction, read the payment score, and decision the user or session.
ARAZZOSift Workflow Run Evaluation
Trigger a synchronous workflow evaluation, list the user's runs, and inspect one.
ARAZZOScroll within the panel for all 7 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Sift Com Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Sift Com Finops
FINOPSFeatures 8
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Sift Score
Unified 0 to 100 risk score per abuse type powered by Sift's global trust network.
Workflows
Visual rule and ML composition that automates accept, review, and block decisions.
Console
Analyst workbench for case management, queue review, and decisioning.
Device Fingerprinting
JavaScript snippet plus iOS, Android, and React Native SDKs for device telemetry.
Synchronous Scoring
Inline scoring on the Events API via `return_score=true` for real-time decisioning.
Verification
Built-in SMS, email, phone, push, biometric, and security key verification with risk hooks.
Dispute Management
Automated chargeback representment with network-tuned evidence packages.
Sandbox Environment
Sandbox API keys for safe integration and load testing.
Scroll within the panel for all 8 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Sift Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Sift API Rules
SPECTRALSift API Rules
SPECTRALJSON Schema 4
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
Examples 2
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Sift Apply Decision Example
EXAMPLESift Create Order Example
EXAMPLESecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 7
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
Payment Fraud
Stop card-not-present fraud, stolen card use, and high-risk transactions at checkout.
Account Takeover
Detect credential stuffing and ATO at login with device, behavior, and identity signals.
Account Creation Abuse
Block fake account creation, fraud rings, and bot signups.
Promotion Abuse
Detect referral, coupon, and promotion abuse across new and existing users.
Content Scams
Catch spam, scams, and abusive content across messaging, listings, and reviews.
Money Movement
Risk score peer-to-peer transfers, withdrawals, and fintech money movement flows.
Chargeback Dispute Management
Automate dispute representment to recover chargeback revenue.
Scroll within the panel for all 7 ·
Integrations 7
Pre-built integrations with other platforms tell you where this provider already fits in a stack.
Pre-built integrations with other platforms and tools.
Stripe
Card-not-present scoring on Stripe transactions.
Adyen
Risk decisioning integrated with Adyen payment flows.
Braintree
Risk decisioning integrated with Braintree.
Shopify
Sift app for the Shopify ecosystem.
Auth0
Login risk decisioning via Sift signals.
Salesforce
Sift signals surfaced into Salesforce customer records.
Segment
Event piping from Segment into the Sift Events API.
Scroll within the panel for all 7 ·
Solutions 6
Packaged solutions the provider offers on top of the raw API surface.
Packaged solutions this provider offers.
Digital Commerce
Internet And Software
Finance And Fintech
Online Gambling
Travel And Transportation
Food And Delivery
Resources
Every other property we hold for Sift — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 10
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 10 ·
Build 10
SDKs, sample code, and the tooling you integrate with
Scroll within the panel for all 10 ·
Access & Security 3
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 5
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/sift-com · machine-readable index on apis.io
This is an independent, third-party profile of Sift, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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