URL Checker API
Verify URL accessibility, detect redirects, and extract SEO metadata instantly.
Validate any URL to check HTTP status codes, response times, and redirect chains. Extract essential SEO metadata like page titles and descriptions while identifying protocol and domain details. No external API calls — 100% server-side.
How it works
Three steps. No complex setup.
Send your request
Make a POST with the data you want to analyze. Include your API key in the Authorization header.
We process server-side
Our engine validates, analyzes and enriches the data in under 200ms. No external APIs, no network latency.
Receive the result
Typed JSON with all documented fields. Clear errors if something fails. Production ready.
Who is it for?
Response example
Real input and output. What you send and what you get back.
// Input
{
"url": "https://github.com"
}// Output
{
"url": "https://github.com",
"is_valid": true,
"is_accessible": true,
"status_code": 200,
"final_url": "https://github.com/",
"redirect_url": "https://github.com/",
"redirected": true,
"redirect_count": 1,
"response_time_ms": 42,
"title": "GitHub · Change is constant. GitHub keeps you ahead.",
"description": "Join the world's most widely adopted, AI-powered developer platform.",
"protocol": "https",
"domain": "github.com",
"server_header": "GitHub.com",
"error": null
}Try it now
// live demo — no account needed to try
Playground
Integrate into your project
Copy and paste. Replace YOUR_API_KEY with your real key.
curl -X POST https://jsnhengine.com/api/trpc/urlChecker.check \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{"json": {"url":"https://github.com"}}'Why choose JSNH Engine Lab
Low latency
Responses in under 200ms
Secure authentication
API keys with per-plan rate limiting
Usage tracking
Every request logged with metrics
Production ready
Input validation and typed errors
Frequently asked questions
Everything you need to know before integrating.
Other modules
Expand your integration with more APIs from the catalogue.
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IP Lookup API
Instant IP geolocation: country, city, timezone, and connection type detection.
1 token / call →
// production ready
Start using URL Checker API
Sign up free and get 1,000 tokens to start. No credit card. No complex setup.