Fingerprint

Fingerprint (formerly FingerprintJS) is a device-identification and fraud-prevention platform. Its browser and mobile agents generate a stable visitorId, and the Server API returns detailed identification events enriched with Smart Signals (bot, VPN, proxy, tampering, emulator, and more) for account takeover, payment fraud, and bot-mitigation use cases.

Fingerprint publishes 5 API contracts indexed on the APIs.io network, including Event Search API, Events API, Related Visitors API, and 2 more. Tagged areas include Device Identification, Fraud Prevention, Bot Detection, Smart Signals, and Identity.

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

Fingerprint’s developer surface includes authentication, documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.7/100 thin ▬ flat Agent 25/100 agent aware Front door AI 4/6 moderate Heartbeat 93/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Device IdentificationFraud Prevention Bot DetectionSmart SignalsIdentity

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Cybersecurity Management

BC-620

Event SearchEvents

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 30.7/100 · thin

Contract Quality 9.2 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 2.4 / 15

Operational Transparency 0.8 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · 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 8 / 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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 15.8 — up to +16.8 composite points
Developer Ergonomics scores 32.1 — up to +13.6 composite points
Contract Quality scores 49.3 — up to +12.7 composite points

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.

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/fingerprint/apis.yml: open an issue on github.com/api-evangelist/fingerprint 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 →

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 5

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

Fingerprint Event Search API

Search identification events with filters.

Fingerprint Events API

Get and update individual identification events.

Fingerprint Related Visitors API

Find visitorIds likely belonging to the same person.

Fingerprint Visitors API

Get visit history and delete visitor data.

FingerprintJS Pro

Fraud detection API offering highly accurate browser fingerprinting

Open Collections 5

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

Fingerprint Server Event Search API

OPEN COLLECTION

Fingerprint Server Event Search Events API

OPEN COLLECTION

Fingerprint Server Event Search Related Visitors API

OPEN COLLECTION

Fingerprint Server Event Search Visitors API

OPEN COLLECTION

Fingerprint Server API

OPEN COLLECTION

Fingerprint API pricing

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

Plan	Price
Free free	Free
Pro Plus paid	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Server API Requests Per Second (RPS): see provider documentation requests
Identification Agent Requests: see provider documentation requests

Compiled by API Evangelist, not yet checked against Fingerprint's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Fingerprint Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fingerprint Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Fingerprint

SLA

FinOps 1

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

Fingerprint Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fingerprint API Rules

67 rules · 65 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

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

Fingerprint Authentication

apiKey · 2 schemes

SECURITY

Fingerprint Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Fingerprint Trust Center

SOC 2, ISO 27001, GDPR, CSA STAR

SECURITY

Agentic Access 1

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

Fingerprint Agentic Access

6 operations · 2 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 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

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

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: fingerprint
url: https://raw.githubusercontent.com/api-evangelist/fingerprint/refs/heads/main/apis.yml
name: Fingerprint
kind: company
description: Fingerprint (formerly FingerprintJS) is a device-identification and fraud-prevention platform. Its browser and
  mobile agents generate a stable visitorId, and the Server API returns detailed identification events enriched with Smart
  Signals (bot, VPN, proxy, tampering, emulator, and more) for account takeover, payment fraud, and bot-mitigation use cases.
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: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fingerprint.png
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Device Identification
- Fraud Prevention
- Bot Detection
- Smart Signals
- Identity
created: '2026-06-25'
modified: '2026-06-25'
specificationVersion: '0.23'
apis:
- aid: fingerprint:fingerprint-event-search-api
  name: Fingerprint Event Search API
  description: Search identification events with filters.
  humanURL: https://dev.fingerprint.com/reference/getevent
  baseURL: https://api.fpjs.io
  tags:
  - Event Search
  properties:
  - type: OpenAPI
    url: openapi/fingerprint-event-search-api-openapi.yml
  - type: Documentation
    url: https://dev.fingerprint.com/docs/server-api
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getevent
  - type: PostmanCollection
    url: collections/fingerprint.postman_collection.json
  - type: OpenCollection
    url: collections/fingerprint.opencollection.json
  - type: APIReference
    url: https://dev.fingerprint.com/reference/searchevents
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getvisits
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getrelatedvisitors
  - type: Documentation
    url: https://dev.fingerprint.com/docs/smart-signals-overview
  - type: Documentation
    url: https://dev.fingerprint.com/docs/webhooks
  - type: Documentation
    url: https://dev.fingerprint.com/docs/sealed-client-results
- aid: fingerprint:fingerprint-events-api
  name: Fingerprint Events API
  description: Get and update individual identification events.
  humanURL: https://dev.fingerprint.com/reference/getevent
  baseURL: https://api.fpjs.io
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/fingerprint-events-api-openapi.yml
  - type: Documentation
    url: https://dev.fingerprint.com/docs/server-api
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getevent
  - type: PostmanCollection
    url: collections/fingerprint.postman_collection.json
  - type: OpenCollection
    url: collections/fingerprint.opencollection.json
  - type: APIReference
    url: https://dev.fingerprint.com/reference/searchevents
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getvisits
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getrelatedvisitors
  - type: Documentation
    url: https://dev.fingerprint.com/docs/smart-signals-overview
  - type: Documentation
    url: https://dev.fingerprint.com/docs/webhooks
  - type: Documentation
    url: https://dev.fingerprint.com/docs/sealed-client-results
- aid: fingerprint:fingerprint-related-visitors-api
  name: Fingerprint Related Visitors API
  description: Find visitorIds likely belonging to the same person.
  humanURL: https://dev.fingerprint.com/reference/getevent
  baseURL: https://api.fpjs.io
  tags:
  - Related Visitors
  properties:
  - type: OpenAPI
    url: openapi/fingerprint-related-visitors-api-openapi.yml
  - type: Documentation
    url: https://dev.fingerprint.com/docs/server-api
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getevent
  - type: PostmanCollection
    url: collections/fingerprint.postman_collection.json
  - type: OpenCollection
    url: collections/fingerprint.opencollection.json
  - type: APIReference
    url: https://dev.fingerprint.com/reference/searchevents
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getvisits
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getrelatedvisitors
  - type: Documentation
    url: https://dev.fingerprint.com/docs/smart-signals-overview
  - type: Documentation
    url: https://dev.fingerprint.com/docs/webhooks
  - type: Documentation
    url: https://dev.fingerprint.com/docs/sealed-client-results
- aid: fingerprint:fingerprint-visitors-api
  name: Fingerprint Visitors API
  description: Get visit history and delete visitor data.
  humanURL: https://dev.fingerprint.com/reference/getevent
  baseURL: https://api.fpjs.io
  tags:
  - Visitors
  properties:
  - type: OpenAPI
    url: openapi/fingerprint-visitors-api-openapi.yml
  - type: Documentation
    url: https://dev.fingerprint.com/docs/server-api
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getevent
  - type: PostmanCollection
    url: collections/fingerprint.postman_collection.json
  - type: OpenCollection
    url: collections/fingerprint.opencollection.json
  - type: APIReference
    url: https://dev.fingerprint.com/reference/searchevents
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getvisits
  - type: APIReference
    url: https://dev.fingerprint.com/reference/getrelatedvisitors
  - type: Documentation
    url: https://dev.fingerprint.com/docs/smart-signals-overview
  - type: Documentation
    url: https://dev.fingerprint.com/docs/webhooks
  - type: Documentation
    url: https://dev.fingerprint.com/docs/sealed-client-results
- name: FingerprintJS Pro
  description: Fraud detection API offering highly accurate browser fingerprinting
  humanURL: https://dev.fingerprintjs.com/docs
  baseURL: https://dev.fingerprintjs.com/docs
  tags:
  - Security
  properties:
  - type: Documentation
    url: https://dev.fingerprintjs.com/docs
common:
- type: CapabilityMap
  url: capabilities/fingerprint-capability-edges.yml
  name: Fingerprint Business Capability Map
- type: AgenticAccess
  url: agentic-access/fingerprint-agentic-access.yml
- type: TrustCenter
  url: security/fingerprint-trust-center.yml
- type: DomainSecurity
  url: security/fingerprint-domain-security.yml
- type: Authentication
  url: authentication/fingerprint-authentication.yml
- type: GitHubOrganization
  url: https://github.com/fingerprintjs
- type: LinkedIn
  url: https://www.linkedin.com/company/fingerprintjs
- type: Website
  url: https://fingerprint.com
- type: Documentation
  url: https://dev.fingerprint.com/docs
- type: Plans
  url: plans/fingerprint-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fingerprint-rate-limits.yml
- type: FinOps
  url: finops/fingerprint-finops.yml
- url: https://fingerprint.com/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Fingerprint API — frequently asked questions

Does Fingerprint have an API?

Yes. APIs.io lists 5 APIs from Fingerprint, including Fingerprint Event Search API, Fingerprint Events API and Fingerprint Related Visitors API, and 2 more.

Is there an OpenAPI specification for the Fingerprint API?

Yes. APIs.io indexes 4 OpenAPI specifications for Fingerprint, each linked for download from this page.

How do I authenticate with the Fingerprint API?

Fingerprint uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Fingerprint Authentication.

How much does the Fingerprint API cost?

APIs.io lists 3 pricing plans for Fingerprint, with each plan's price, limits and inclusions under Pricing on this page.

Is the Fingerprint API ready for AI agents?

Fingerprint has a Kin Score of 30.7 out of 100 (thin) and an Agent Readiness score of 25.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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