The relay can't read what it carries

The client's new developer needs the production credentials file. Chat attachments live forever in someone's export. Drive links keep permissions you'll forget to revoke.

Hoody Pipe stores nothing: the server brokers the connection and the bytes stream through, sender to receiver, gone when the transfer ends. For a secret, add the layer the pipe's own help page documents: pipe it through OpenSSL. You encrypt on your side and stream the ciphertext with curl -T -; they receive with curl and decrypt with the passphrase you share on another channel. The relay carries ciphertext for the seconds it's in flight, holds no copy, and has nothing to read.

No file at rest, no ACL to clean up later.

The secret crosses the wire encrypted and never lands anywhere.