lfm

Sell before you build. lfm is an open-source command-line tool and a set of agent skills for selling a product before you build it. Instead of starting with auth, billing and a dashboard, your coding agent first collects what buyers actually write: at least 60 posts from five platforms and 12 competing pages, saved verbatim and dated. From that research it writes concept.md, where every choice about the buyer, the look and the copy is cited to a source, and then builds one landing page from the concept. You add your offer and a Stripe payment link and start selling. The compiler is the strict part. lfm compile turns one HTML template with its config and assets into a standalone static folder, and refuses to write it while the page is broken, slow, inaccessible, hard to find in search or full of generic generated-design defaults. Every finding says how to fix it, and each report ends with the next step, so the agent stays on the process. lfm also flags a checkout link that is missing or hidden. With Chrome installed, lfm compile --release scrolls the page at phone and desktop sizes and saves every frame. If the page sells a file, such as an ebook, printable, spreadsheet, Word document or slide deck, the file is checked too. lfm ships no house style: each project picks its look from its own research. It brings no traffic and hosts nothing; you upload the output folder to any host. It is one Go binary for macOS and Linux (Intel and ARM). Install it with Homebrew (brew install anonyfox/tap/lfm), with a one-line install script that needs no sudo, or with go install, and it works with Claude Code, Codex, Cursor, OpenCode, Gemini CLI and GitHub Copilot. Free, MIT licensed, no account.