Open-API Fast OpenAPI 3.1 server and client. The document is compiled once - every parameter, header, cookie and body schema through JSON::Schema::Fast's C ABI - and each request is routed and validated on a C hot path before the handler runs. The same compiled spec drives Open::API::Client, a spec-driven HTTP client on Fetch's C ABI. On the bundled bench the whole OpenAPI layer costs about half a percent of a bare hand-rolled PSGI app. INSTALLATION To install this module, run the following commands: perl Makefile.PL make make test make install SUPPORT AND DOCUMENTATION After installing, you can find documentation for this module with the perldoc command. perldoc Open::API perldoc Open::API::Client LICENSE AND COPYRIGHT This software is Copyright (c) 2026 by LNATION . This is free software, licensed under: The Artistic License 2.0 (GPL Compatible)