Bot protection & human verification
Protect your forms from bots and automated abuse. Generate and verify CAPTCHAs, invisible bot detection, and proof-of-work challenges.
Generate classic image CAPTCHAs. Distorted text that humans can read but bots can't.
POST /api/v1/captcha/generate
{ "type": "image",
"difficulty": "medium" }
// Response
{ "captcha_id": "cap_abc123",
"image_url": "data:image/png;base64,...",
"expires_at": "2024-01-19T12:05:00Z" }Verify user CAPTCHA responses. Secure server-side validation with attempt limiting.
POST /api/v1/captcha/verify
{ "captcha_id": "cap_abc123",
"response": "A7X9K" }
// Response
{ "valid": true,
"solved_at": "2024-01-19T12:03:00Z" }Detect bots without user interaction. Analyze behavior, timing, and browser fingerprints.
POST /api/v1/captcha/invisible
{ "session_data": {...},
"browser_fingerprint": {...} }
// Response
{ "is_bot": false,
"bot_score": 0.05,
"signals": [],
"action": "allow" }Get your API key and start protecting forms in minutes.