Google reCAPTCHA website screenshot

Google reCAPTCHA

Google reCAPTCHA is a security service that protects websites and applications from spam and abuse by verifying that interactions are from real humans rather than bots, offering Enterprise and standard APIs for site verification and risk assessment.

Google reCAPTCHA publishes 2 APIs on the APIs.io network: Assessments API and Keys API. Tagged areas include Abuse Prevention, Bot Detection, CAPTCHA, Fraud Prevention, and Google Cloud.

The Google reCAPTCHA catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Google reCAPTCHA’s developer surface includes authentication, getting-started guide, pricing, developer console, support, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
57.3/100 strong ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
3 APIs
Abuse PreventionBot DetectionCAPTCHAFraud PreventionGoogle CloudSecurity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 57.3/100 · strong
Contract Quality 17.4 / 25
Developer Ergonomics 8.7 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 6.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/google-recaptcha: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

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

reCAPTCHA Site Verify API

The reCAPTCHA Site Verify API is the standard verification endpoint for reCAPTCHA v2 and v3 tokens. After a user completes a reCAPTCHA challenge on the frontend, the backend sen...

Google reCAPTCHA Assessments API

Create and annotate risk assessments

Google reCAPTCHA Keys API

Manage reCAPTCHA site keys

Postman Collections 2

Ready-to-run Postman collections for exercising this provider's APIs.

Google reCAPTCHA reCAPTCHA Enterprise Assessments API

POSTMAN

Google reCAPTCHA reCAPTCHA Enterprise Assessments Keys API

POSTMAN

Open Collections 1

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

Google reCAPTCHA reCAPTCHA Enterprise API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Google Recaptcha Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Google Recaptcha Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Google Recaptcha Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Google Recaptcha Context

0 classes · 3 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Google reCAPTCHA API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

reCAPTCHA Enterprise Assessment

4 properties

JSON SCHEMA

Security Posture 3

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

Google Recaptcha Authentication

oauth2 · 1 scheme

SECURITY

Google Recaptcha Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Google Recaptcha Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Google Recaptcha Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Agentic Access 1

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

Google Recaptcha Agentic Access

6 operations · 4 acting

6 operations · 4 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 Console
Console

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD
JSONLD

Build 3

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 GitHubOrganization
GitHubOrganization
 SDKs
SDKs

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Source (apis.yml)

apis.yml Raw ↑ 
aid: google-recaptcha
name: Google reCAPTCHA
description: Google reCAPTCHA is a security service that protects websites and applications from spam and abuse by verifying
  that interactions are from real humans rather than bots, offering Enterprise and standard APIs for site verification and
  risk assessment.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-recaptcha.png
url: https://raw.githubusercontent.com/api-evangelist/google-recaptcha/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-05-19'
specificationVersion: '0.19'
type: Index
tags:
- Abuse Prevention
- Bot Detection
- CAPTCHA
- Fraud Prevention
- Google Cloud
- Security
apis:
- name: reCAPTCHA Site Verify API
  description: The reCAPTCHA Site Verify API is the standard verification endpoint for reCAPTCHA v2 and v3 tokens. After a
    user completes a reCAPTCHA challenge on the frontend, the backend sends the response token to this API to verify the interaction.
    The API returns whether the verification succeeded, a score (for v3), the action name, and the hostname.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.google.com/recaptcha/docs/verify
  baseURL: https://www.google.com/recaptcha/api
  tags:
  - reCAPTCHA V3
  - Token Validation
  - Verification
  properties:
  - type: Documentation
    url: https://developers.google.com/recaptcha/docs/verify
- aid: google-recaptcha:google-recaptcha-assessments-api
  name: Google reCAPTCHA Assessments API
  description: Create and annotate risk assessments
  humanURL: https://cloud.google.com/recaptcha-enterprise/docs
  baseURL: https://recaptchaenterprise.googleapis.com
  tags:
  - Assessments
  properties:
  - type: OpenAPI
    url: openapi/google-recaptcha-assessments-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/recaptcha-enterprise/docs/reference/rest
  - type: JSONSchema
    url: json-schema/google-recaptcha-assessment-schema.json
- aid: google-recaptcha:google-recaptcha-keys-api
  name: Google reCAPTCHA Keys API
  description: Manage reCAPTCHA site keys
  humanURL: https://cloud.google.com/recaptcha-enterprise/docs
  baseURL: https://recaptchaenterprise.googleapis.com
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/google-recaptcha-keys-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/recaptcha-enterprise/docs/reference/rest
  - type: JSONSchema
    url: json-schema/google-recaptcha-assessment-schema.json
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/google-recaptcha/overview
- type: AgenticAccess
  url: agentic-access/google-recaptcha-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-recaptcha-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-recaptcha-domain-security.yml
- type: Authentication
  url: authentication/google-recaptcha-authentication.yml
- type: OAuthScopes
  url: scopes/google-recaptcha-scopes.yml
- type: GitHubOrganization
  url: https://github.com/google
- type: GettingStarted
  url: https://cloud.google.com/recaptcha-enterprise/docs/getting-started
- type: Pricing
  url: https://cloud.google.com/recaptcha-enterprise/pricing
- type: Authentication
  url: https://cloud.google.com/recaptcha-enterprise/docs/authentication
- type: Console
  url: https://console.cloud.google.com/security/recaptcha
- type: SDKs
  url: https://cloud.google.com/recaptcha-enterprise/docs/libraries
- type: Support
  url: https://cloud.google.com/recaptcha-enterprise/docs/support
- type: StatusPage
  url: https://status.cloud.google.com
- type: JSONLD
  url: json-ld/google-recaptcha-context.jsonld
- type: Integrations
  url: https://cloud.google.com/marketplace
integrations:
- name: Become a Partner
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com