IPQualityScore

IPQualityScore (IPQS) provides real-time fraud prevention and threat intelligence APIs covering proxy/VPN/Tor and IP reputation scoring, email and phone validation, malicious URL and domain scanning, device fingerprinting, transaction risk scoring, and dark-web leaked-data checks. All endpoints are delivered as a simple REST/JSON interface with the API key passed in the request path.

IPQualityScore publishes 6 API contracts indexed on the APIs.io network, including Device Fingerprint API, Email Validation API, IP Reputation API, and 3 more. Tagged areas include Fraud Prevention, IP Reputation, Proxy Detection, Email Verification, and Threat Intelligence.

The IPQualityScore catalog on APIs.io includes 1 Spectral governance ruleset.

IPQualityScore’s developer surface includes engineering blog, authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.1/100 thin ▬ flat Agent 18/100 agent aware Front door AI 2/6 trace Heartbeat 81/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Fraud Prevention IP Reputation Proxy Detection Email Verification Threat Intelligence

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 27.1/100 · thin

Contract Quality 9.0 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 1.0 / 15

Operational Transparency 1.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →
Contract Quality scores 47.8 — up to +13.1 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/ipqualityscore/apis.yml: open an issue on github.com/api-evangelist/ipqualityscore to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Browser Extension Stores (company-published Firefox add-ons; Chrome Web Store unreadable)	builds-on	43.3	-	-
APIs.guru OpenAPI Directory (API definition directory)	builds-on	43.3	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

IPQualityScore Device Fingerprint API

The Device Fingerprint API from IPQualityScore — 1 operation(s) for device fingerprint.

IPQualityScore Email Validation API

The Email Validation API from IPQualityScore — 1 operation(s) for email validation.

IPQualityScore IP Reputation API

The IP Reputation API from IPQualityScore — 1 operation(s) for ip reputation.

IPQualityScore Leaked Data API

The Leaked Data API from IPQualityScore — 1 operation(s) for leaked data.

IPQualityScore Phone Validation API

The Phone Validation API from IPQualityScore — 1 operation(s) for phone validation.

IPQualityScore URL Scanner API

The URL Scanner API from IPQualityScore — 1 operation(s) for url scanner.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

IPQualityScore Device Fingerprint API

OPEN COLLECTION

IPQualityScore Device Fingerprint Email Validation API

OPEN COLLECTION

IPQualityScore Device Fingerprint IP Reputation API

OPEN COLLECTION

IPQualityScore Device Fingerprint Leaked Data API

OPEN COLLECTION

IPQualityScore Device Fingerprint Phone Validation API

OPEN COLLECTION

IPQualityScore Device Fingerprint URL Scanner API

OPEN COLLECTION

IPQualityScore API

OPEN COLLECTION

Scroll for all 7

IPQualityScore API pricing

Not yet checked against IPQualityScore's own pricing page. Compiled by API Evangelist on 2026-06-25 from www.ipqualityscore.com/plans; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	Free
Startup paid	—
SMB Basic paid	—
SMB+ paid	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Monthly Lookups: varies by plan (1,000 Free to custom Enterprise) lookups
Daily Lookups: varies by plan (35/day Free, 250/day Startup) lookups
Requests Per Second: see provider documentation (e.g., 20/second on SMB Basic) requests

Compiled by API Evangelist, not yet checked against IPQualityScore's documentation. All 4 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

IPQualityScore Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

IPQualityScore Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

IPQualityScore Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

IPQualityScore API Rules

63 rules · 61 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

IPQualityScore Authentication

apiKey · 1 scheme

SECURITY

IPQualityScore Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

IPQualityScore Agentic Access

6 operations · 1 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Source (apis.yml)

aid: ipqualityscore
url: https://raw.githubusercontent.com/api-evangelist/ipqualityscore/refs/heads/main/apis.yml
name: IPQualityScore
kind: company
description: IPQualityScore (IPQS) provides real-time fraud prevention and threat intelligence APIs covering proxy/VPN/Tor
  and IP reputation scoring, email and phone validation, malicious URL and domain scanning, device fingerprinting, transaction
  risk scoring, and dark-web leaked-data checks. All endpoints are delivered as a simple REST/JSON interface with the API
  key passed in the request path.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ipqualityscore.png
tags:
- Fraud Prevention
- IP Reputation
- Proxy Detection
- Email Verification
- Threat Intelligence
tags_raw:
- Fraud Prevention
- IP Reputation
- Proxy Detection
- Email Validation
- Threat Intelligence
created: '2026-06-25'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: ipqualityscore:ipqualityscore-device-fingerprint-api
  name: IPQualityScore Device Fingerprint API
  description: The Device Fingerprint API from IPQualityScore — 1 operation(s) for device fingerprint.
  humanURL: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  baseURL: https://www.ipqualityscore.com/api/json
  tags:
  - Device Fingerprint
  properties:
  - type: OpenAPI
    url: openapi/ipqualityscore-device-fingerprint-api-openapi.yml
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/email-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/email-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/device-fingerprint-api/overview
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/transaction-scoring
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/dark-web-leak-api/overview
- aid: ipqualityscore:ipqualityscore-email-validation-api
  name: IPQualityScore Email Validation API
  description: The Email Validation API from IPQualityScore — 1 operation(s) for email validation.
  humanURL: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  baseURL: https://www.ipqualityscore.com/api/json
  tags:
  - Email Verification
  tags_raw:
  - Email Validation
  properties:
  - type: OpenAPI
    url: openapi/ipqualityscore-email-validation-api-openapi.yml
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/email-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/email-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/device-fingerprint-api/overview
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/transaction-scoring
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/dark-web-leak-api/overview
- aid: ipqualityscore:ipqualityscore-ip-reputation-api
  name: IPQualityScore IP Reputation API
  description: The IP Reputation API from IPQualityScore — 1 operation(s) for ip reputation.
  humanURL: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  baseURL: https://www.ipqualityscore.com/api/json
  tags:
  - IP Reputation
  properties:
  - type: OpenAPI
    url: openapi/ipqualityscore-ip-reputation-api-openapi.yml
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/email-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/email-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/device-fingerprint-api/overview
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/transaction-scoring
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/dark-web-leak-api/overview
- aid: ipqualityscore:ipqualityscore-leaked-data-api
  name: IPQualityScore Leaked Data API
  description: The Leaked Data API from IPQualityScore — 1 operation(s) for leaked data.
  humanURL: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  baseURL: https://www.ipqualityscore.com/api/json
  tags:
  - Leaked Data
  properties:
  - type: OpenAPI
    url: openapi/ipqualityscore-leaked-data-api-openapi.yml
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/email-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/email-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/device-fingerprint-api/overview
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/transaction-scoring
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/dark-web-leak-api/overview
- aid: ipqualityscore:ipqualityscore-phone-validation-api
  name: IPQualityScore Phone Validation API
  description: The Phone Validation API from IPQualityScore — 1 operation(s) for phone validation.
  humanURL: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  baseURL: https://www.ipqualityscore.com/api/json
  tags:
  - Phone Validation
  properties:
  - type: OpenAPI
    url: openapi/ipqualityscore-phone-validation-api-openapi.yml
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/email-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/email-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/device-fingerprint-api/overview
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/transaction-scoring
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/dark-web-leak-api/overview
- aid: ipqualityscore:ipqualityscore-url-scanner-api
  name: IPQualityScore URL Scanner API
  description: The URL Scanner API from IPQualityScore — 1 operation(s) for url scanner.
  humanURL: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  baseURL: https://www.ipqualityscore.com/api/json
  tags:
  - URL Scanner
  properties:
  - type: OpenAPI
    url: openapi/ipqualityscore-url-scanner-api-openapi.yml
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/email-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/email-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/phone-number-validation-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/overview
  - type: APIReference
    url: https://www.ipqualityscore.com/documentation/malicious-url-scanner-api/response-parameters
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/device-fingerprint-api/overview
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/proxy-detection-api/transaction-scoring
  - type: Documentation
    url: https://www.ipqualityscore.com/documentation/dark-web-leak-api/overview
common:
- url: https://www.ipqualityscore.com/articles
  type: Blog
- type: AgenticAccess
  url: agentic-access/ipqualityscore-agentic-access.yml
- type: DomainSecurity
  url: security/ipqualityscore-domain-security.yml
- type: Authentication
  url: authentication/ipqualityscore-authentication.yml
- type: GitHubOrganization
  url: https://github.com/IPQualityScore
- type: LinkedIn
  url: https://www.linkedin.com/company/ipqualityscore
- type: Website
  url: https://www.ipqualityscore.com
- type: Documentation
  url: https://www.ipqualityscore.com/documentation/overview
- type: Plans
  url: plans/ipqualityscore-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ipqualityscore-rate-limits.yml
- type: FinOps
  url: finops/ipqualityscore-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

IPQualityScore API — frequently asked questions

Does IPQualityScore have an API?

Yes. APIs.io lists 6 APIs from IPQualityScore, including IPQualityScore Device Fingerprint API, IPQualityScore Email Validation API and IPQualityScore IP Reputation API, and 3 more.

Is there an OpenAPI specification for the IPQualityScore API?

Yes. APIs.io indexes 6 OpenAPI specifications for IPQualityScore, each linked for download from this page.

How do I authenticate with the IPQualityScore API?

IPQualityScore uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as IPQualityScore Authentication.

How much does the IPQualityScore API cost?

APIs.io lists 5 pricing plans for IPQualityScore, with each plan's price, limits and inclusions under Pricing on this page.

Is the IPQualityScore API ready for AI agents?

IPQualityScore has a Kin Score of 27.1 out of 100 (thin) and an Agent Readiness score of 17.9 (agent-aware), scored by API Evangelist on 2026-11-13.

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