Google reCAPTCHA API
Authentication & Security
Behavioral risk scoring and bot mitigation API protecting signup forms and checkouts without user friction
Google reCAPTCHA API Highlights
Google reCAPTCHA API is best for web applications, fintech checkouts, registration forms, and e-commerce platforms fighting bot fraud
API Key (Site Key for frontend + Secret Key for backend assessment verification)
Free tier: 10,000 assessments per month; scales seamlessly to millions of requests
Nigeria
Ghana
KenyaGoogle reCAPTCHA is an enterprise fraud prevention and bot defense service that protects websites and mobile apps from spam, automated credential stuffing, ticket scalping, and abusive account creation without degrading user experience. 0) indicating the likelihood that an interaction is human versus automated bot traffic, eliminating disruptive puzzle challenges for legitimate users.
In Nigerian tech platforms, reCAPTCHA is integrated across nearly every registration form, OTP verification endpoint, and payment checkout to block automated fraud bots and brute-force login attempts.
Google reCAPTCHA API Core Features & Capabilities
| Feature | Status | Description & Capabilities |
|---|---|---|
| Background Risk Scoring (v3 / Enterprise) | ✓ Supported | Provides native Background Risk Scoring (v3 / Enterprise) capabilities integrated within the API. |
| Interactive Checkbox / Puzzle Fallback (v2) | ✓ Supported | Provides native Interactive Checkbox / Puzzle Fallback (v2) capabilities integrated within the API. |
| Credential-Stuffing Bot Detection | ✓ Supported | Provides native Credential-Stuffing Bot Detection capabilities integrated within the API. |
| Native Android & iOS SDK Support | ✓ Supported | Provides native Native Android & iOS SDK Support capabilities integrated within the API. |
| Backend Assessment Verification REST API | ✓ Supported | Provides native Backend Assessment Verification REST API capabilities integrated within the API. |
| Action-Specific Risk Score Tagging | ✓ Supported | Provides native Action-Specific Risk Score Tagging capabilities integrated within the API. |
- reCAPTCHA Enterprise & v3 offers up to 10,000 assessments per month for free
- Paid tier starts from $1 per 1,000 assessments above the free threshold
Required Access Documents for Google reCAPTCHA API
- Google Cloud / reCAPTCHA Console AccountRequiredRegister your domain in the Google reCAPTCHA console
Different Google reCAPTCHA API use cases
- Securing User Registration Forms:Block automated bot scripts from creating thousands of fake accounts to farm welcome incentives.
- Preventing SMS OTP Resource Exhaustion:Verify that a human is requesting phone verification codes before burning expensive telco SMS credits.
- Checkout Card Testing Defense:Stop automated card testing scripts from testing stolen credit card numbers against payment gateways.