Casey

Today, the @lettercompany is releasing the beta of Letterpress-1, the world’s first coding agent, harness, and IDE purpose-built for growth engineering. tl;dr: check out the 🧵 to see the product in action. Growth is re-emerging as an engineering problem, but today’s coding tools weren’t designed for it. Your website isn’t isolated like your app: it reacts to the outside world (e.g. agent behavior, Google rankings, observed human interactions, and competitor activity). Leading coding agents were built to scale complex codebases, not to autonomously build for outside signals. Letterpress-1 is. Letterpress-1 is designed to tackle growth problems of every size. It’s also proactive: it suggests the nth next thing to build for growth. It'll issue pull requests for de-anonymization, experimental landing pages, warmed emails, blog automations, agent telemetry, etc. The Letterpress IDE is also built into your site. Press ⌘+L, authenticate, and edit text directly on your website. Letterpress-1 automatically opens a pull request with the change. Letterpress-1 ships with readily available infrastructure to stage futuristic growth strategies that win over agents. These include: => Proofs: autonomous evidence chains that verify customer success data for agent visitors => Simulations: staged mirror applications where agents can safely try solutions before buying => Benches: self-hosted, reproducible benchmarks with open-source, independent governance => Phantoms: autonomous websites to sandbox growth strategies Build, automate, and refine your growth process with the Letterpress family of tools. We're proud to count some of the world's most forward-thinking startups as our customers. Sign up today at letter.dev. I’ll share a few examples of Letterpress-1 in action in the thread below.