Dev rewrites Spain's AutoFirma e-signature tool in pure Rust

A Spanish developer rewrote the government-mandated AutoFirma as firma-cli, a zero-dependency 5MB Rust binary for PAdES PDF signing usable as a Claude/ChatGPT skill. It has only been tested on macOS, and feedback on Linux and Windows is being solicited.

2026-10-26 ~ 2026-10-26 · 2 related posts

• Dev rewrites Spain's AutoFirma in Rust — works as a Claude/ChatGPT skill to sign PDFs — cuenca · 2026-10-26
• Dev rewrites Spain's AutoFirma as a 5MB dependency-free CLI that AI agents can use to sign PDFs — cuenca · 2026-10-26