Friendly Captcha

aid: friendly-captcha
name: Friendly Captcha
description: |
  Friendly Captcha is a privacy-first, GDPR-compliant bot protection
  service from Germany that uses proof-of-work cryptographic puzzles
  instead of image-labeling challenges. The widget solves a puzzle in
  the background while a user fills out a form, then submits a token
  the server validates against the Friendly Captcha siteverify endpoint.
  The result includes a risk verdict and additional signal intelligence
  (IP, bot detection, browser identification, anonymization detection).
  Friendly Captcha publishes open-source widgets and framework
  integrations for React, Vue, and Angular, plus pre-built plugins for
  WordPress, Magento, and other CMS platforms.
type: Index
position: Provider
access: Public
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
  - CAPTCHA
  - Bot Defense
  - Privacy
  - Proof of Work
  - GDPR
  - European Hosting
  - Accessibility
url: https://raw.githubusercontent.com/api-evangelist/friendly-captcha/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.20'
apis:
  - aid: friendly-captcha:siteverify
    name: Friendly Captcha Siteverify API
    description: |
      The siteverify endpoint validates a Friendly Captcha solution
      token. The server POSTs the token and API key (with optional
      sitekey) and receives a JSON response indicating success, risk
      score, IP intelligence, bot detection signals, and any error
      codes. This is the canonical server-side check for protected
      form submissions and API calls.
    humanURL: https://developer.friendlycaptcha.com/docs/v2/getting-started/verify
    baseURL: https://global.frcapi.com/api/v2/captcha/siteverify
    tags:
      - Siteverify
      - Token Verification
      - Risk Signals
    properties:
      - type: Documentation
        url: https://developer.friendlycaptcha.com/docs/v2/getting-started/verify
      - type: APIReference
        url: https://developer.friendlycaptcha.com/docs/v2/api-reference
      - type: EndpointURL
        url: https://global.frcapi.com/api/v2/captcha/siteverify
  - aid: friendly-captcha:widget
    name: Friendly Captcha Widget
    description: |
      The Friendly Captcha widget is the JavaScript component that runs
      the proof-of-work puzzle in the browser and produces a solution
      token. It is configured via a script tag and a div with the
      sitekey and API endpoint, and can run automatically or on demand.
    humanURL: https://developer.friendlycaptcha.com/docs/v2/getting-started/widget
    baseURL: https://developer.friendlycaptcha.com/docs/v2/getting-started/widget
    tags:
      - JavaScript
      - Widget
      - Proof of Work
      - Frontend
    properties:
      - type: Documentation
        url: https://developer.friendlycaptcha.com/docs/v2/getting-started/widget
      - type: Repository
        url: https://github.com/FriendlyCaptcha/friendly-challenge
      - type: Package
        url: https://www.npmjs.com/package/friendly-challenge
  - aid: friendly-captcha:framework-sdks
    name: Friendly Captcha Framework SDKs
    description: |
      Friendly Captcha publishes open-source wrappers for React, Vue,
      and Angular that expose the widget as an idiomatic component in
      each framework, handling lifecycle, callbacks, and token flow.
    humanURL: https://developer.friendlycaptcha.com/docs/v2/integrations
    baseURL: https://developer.friendlycaptcha.com/docs/v2/integrations
    tags:
      - React
      - Vue
      - Angular
      - SDK
    properties:
      - type: Documentation
        url: https://developer.friendlycaptcha.com/docs/v2/integrations
      - type: SDKReact
        url: https://github.com/FriendlyCaptcha/friendly-captcha-react
      - type: SDKVue
        url: https://github.com/FriendlyCaptcha/friendly-captcha-vue
      - type: SDKAngular
        url: https://github.com/FriendlyCaptcha/friendly-captcha-angular
      - type: GitHubOrganization
        url: https://github.com/FriendlyCaptcha
  - aid: friendly-captcha:plugins
    name: Friendly Captcha CMS Plugins
    description: |
      Pre-built plugins integrate Friendly Captcha into WordPress,
      Magento, and other CMS platforms, letting non-developers add
      privacy-preserving bot defense to common forms without writing
      code.
    humanURL: https://friendlycaptcha.com/integrations/
    baseURL: https://friendlycaptcha.com
    tags:
      - WordPress
      - Magento
      - CMS Plugin
    properties:
      - type: IntegrationsPage
        url: https://friendlycaptcha.com/integrations/
features:
  - name: Proof-of-Work Verification
    description: Cryptographic puzzles run silently in the background instead of asking users to label images.
  - name: Privacy-First Design
    description: No tracking cookies, GDPR-compliant by default, and EU-hosted endpoints available.
  - name: Open-Source Widget
    description: The friendly-challenge widget is published as open source.
  - name: Framework SDKs
    description: First-party React, Vue, and Angular integrations.
  - name: Accessibility
    description: Verification requires no user gesture, removing accessibility barriers from image CAPTCHAs.
  - name: Risk Signal API
    description: Siteverify responses include risk scores, IP intelligence, and bot signals.
useCases:
  - name: Form Protection
    description: Gate signup, contact, and login forms behind a proof-of-work challenge.
  - name: API Abuse Prevention
    description: Require a Friendly Captcha token before accepting unauthenticated API requests.
  - name: GDPR-Sensitive Deployments
    description: Replace third-country CAPTCHA services with an EU-hosted, privacy-first alternative.
  - name: Accessibility-First Forms
    description: Protect forms without imposing image-labeling challenges that exclude some users.
  - name: CMS Site Protection
    description: Add bot defense to WordPress, Magento, and other CMS sites via prebuilt plugins.
integrations:
  - name: React
  - name: Vue
  - name: Angular
  - name: WordPress
  - name: Magento
  - name: HubSpot
  - name: Drupal
authentication:
  - type: SiteKey
    description: Public sitekey embedded in the widget identifies the protected property.
  - type: APIKey
    description: Server-side API key used to call the siteverify endpoint.
common:
  - type: Website
    url: https://friendlycaptcha.com/
  - type: Documentation
    url: https://developer.friendlycaptcha.com/
  - type: APIReference
    url: https://developer.friendlycaptcha.com/docs/v2/api-reference
  - type: Pricing
    url: https://friendlycaptcha.com/pricing/
  - type: Integrations
    url: https://friendlycaptcha.com/integrations/
  - type: GitHubOrganization
    url: https://github.com/FriendlyCaptcha
  - type: Blog
    url: https://friendlycaptcha.com/insights/
  - type: Privacy
    url: https://friendlycaptcha.com/legal/privacy-end-users/
  - type: Contact
    url: https://friendlycaptcha.com/contact/
  - type: LLMsTxt
    url: https://developer.friendlycaptcha.com/llms.txt
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com