Debug HTTP Message Signatures

Validate key directories and inspect signature inputs.

This page collects debugging tools for Web Bot Auth implementations. Start by validating the key directory.

Validate key directory #

Paste the full HTTPS URL for a /.well-known/http-message-signatures-directory endpoint to check whether it returns a usable directory.

URL path must end with /.well-known/http-message-signatures-directory.

Get JWK keyid #

Paste a JWK to compute its RFC 7638 SHA-256 thumbprint for use as keyid.

Verify request headers #

Paste the signed request target, verification JWK, and HTTP Message Signature headers here.

Accepted forms: "<url>" or <label>="<url>".