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Sift Score API

Retrieve real-time Sift Scores per abuse type.

Sift Score API is one of 7 APIs that Sift publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Score. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 3 operations across 2 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 2026-07-12.

Requests are made against a single base URL, https://api.sift.com.

3 operations 2 paths 3 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2026-07-12
Base URL
https://api.sift.com
Authentication
HTTP Basic
Resource Areas
1

Authentication & Security 1

Sift Score API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (apiKeyBasic). By default, every request must be authenticated.

  • apiKeyBasic — HTTP Basic authentication using your Sift REST API key as the username and an empty password. Ingestion APIs (Events, Score, Labels) also accept the key as $ap…

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Score 3

Retrieve real-time Sift Scores per abuse type.

GET
/v205/score/{user_id}
Get a user's Sift Score
getScore 3 params → 200401404
GET
/v205/users/{user_id}/score
Get latest score (no recompute)
getUserScore 2 params → 200401404
POST
/v205/users/{user_id}/score
Rescore a user
rescoreUser 2 params → 200401404

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are ScoreResponse (5 properties), ApiError (3 properties), AbuseScore (2 properties). Each schema is shown below with its type and property counts.

AbuseScore
object
2 properties
ScoreResponse
object
Sift Score response (modeled). Scores range 0-100; higher is riskier. The scores object is keyed by abuse type, each carrying a score and reason codes.
5 properties
ApiError
object
Modeled error envelope. Sift returns a numeric status and errormessage.
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

sift-score-api-openapi.yml Raw ↑

Other APIs Sift publishes across the network.

Sift Decisions API
Sift Events API
Sift Labels API
Sift PSP Merchant Management API
Sift Verification API
Sift Workflows API
Where this information came from

This is an independent, third-party profile of Sift Score API, 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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