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Search HTTP codes with descriptions, common causes, typical fixes, and framework behavior.
OpenGenerate a temporary endpoint and capture incoming requests with headers, query, and body.
OpenCreate configurable mock APIs with conditional responses and live request logs.
OpenInspect certificate issuer, validity, SANs, protocol, and cipher details for a domain.
Accepted input
Accepts tokens, hashes, certificates, encoded strings, or auth-related payloads. Sensitive values stay in the browser unless the tool explicitly calls a user-supplied endpoint.
How to use
Tips
TLS certificate metadata sits below the JavaScript layer in the browser, so inspection requires a minimal server-side handshake.
KalpLabs sends only the sanitized domain name to a Node.js route, returns the presented certificate fields, and keeps the route stateless and log-free.
This makes it practical to verify expiry windows, SAN coverage, and negotiated TLS details without using external certificate tools.
Browsers do not expose certificate details to JavaScript. KalpLabs sends only the domain name to a stateless serverless function to complete the TLS handshake.
No. The route is stateless and does not cache or log the requested domain.