No. All queries via the web app and API are free, with no signup or account required.

Requests are processed entirely client-side: seed hashes are computed via WebCrypto `SubtleCrypto.digest()` (SHA-256) before leaving the browser, so no plaintext mnemonics are logged or stored. This design eliminates the overhead of user management and keeps operating costs low.

A future paid API tier for high-volume B2B use is under consideration, but the free tier will remain fully functional for individual security researchers and wallet owners.