Security
TLS/SSL API Checker
Inspect HTTPS certificate and TLS configuration.
Advertisement
What is TLS/SSL API Checker?
TLS/SSL API Checker establishes a verified HTTPS connection and inspects certificate and negotiated TLS details for a public API host.
What this tool checks
- Certificate hostname verification
- Certificate validity period
- Certificate issuer and common name
- Subject Alternative Names
- Negotiated TLS protocol
- Cipher and cipher strength
- Certificate-chain length
How to use it
- Enter an HTTPS API URL.
- Run the TLS check.
- Review hostname validity, expiry and negotiated protocol.
- Investigate certificates that are expired, invalid or unexpectedly issued.
Important:
The checker validates the connection from the API For Work server. It does not enumerate every protocol or cipher supported by the remote service.
Frequently asked questions
Does the tool ignore certificate errors?
No. Peer and hostname verification are enabled.
Does it test every TLS version?
No. It reports the verified connection and negotiated TLS information.