# Sift

**Canonical:** https://apis.io/providers/sift/  
**Website:** https://sift.com  
**APIs profiled:** 1

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.

## Kin Score — 37.6 / 100 (thin)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.5 from 38.1).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 56.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 31.0 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Payments**: 18.8 (matched via tags).

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Enterprise · Self-serve signup — onboarding: self-serve, pricing: enterprise, trial: no (confidence: high).

## APIs (7)

- **Sift Decisions API** — Apply and retrieve decisions against users, orders, sessions, and content.
- **Sift Events API** — Stream user activity to Sift's machine learning models.
- **Sift Labels API** — Legacy API for labeling users to train models.
- **Sift PSP Merchant Management API** — Manage sub-merchant profiles for payment service providers.
- **Sift Score API** — Retrieve real-time Sift Scores per abuse type.
- **Sift Verification API** — One-time passcode (OTP) step-up verification.
- **Sift Workflows API** — Retrieve the status and results of Sift Workflow runs.

## Agentic access (1)

- **Sift Agentic Access** — 20 operations · 13 acting

## Security (2)

- **Sift Authentication** — http · 1 scheme
- **Sift Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Sift Plans Pricing**

## Tags

Fraud Detection, Fraud Prevention, Risk, Trust and Safety, Machine-Learning, Payment Fraud, Account Takeover, Chargebacks, Digital Trust

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/sift/). Scores are computed from the provider's own public artifacts under a published rubric.