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 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.1/100 developing ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Abuse PreventionBot Detection CAPTCHA Fraud Prevention Google Cloud Security

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 41.1/100 · developing

Contract Quality 14.2 / 23

Developer Ergonomics 8.4 / 18

Access Clarity 4.7 / 18

Operational Transparency 3.1 / 12

Contract Governance 1.1 / 11

Discoverability 6.2 / 9

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 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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 github.com/api-evangelist/google-recaptcha: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 4

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

API Collection

OPEN COLLECTION

Google reCAPTCHA reCAPTCHA Enterprise Assessments API

OPEN COLLECTION

Google reCAPTCHA reCAPTCHA Enterprise Assessments Keys API

OPEN COLLECTION

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

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

Authentication

OAuthScopes

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

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

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.
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
  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: '0.23'
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: Website
  url: https://www.google.com/
- 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

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/google-recaptcha"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/google-recaptcha/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/google-recaptcha/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.