Every app you use, you rent: you pay monthly, the company owns the code, and the AI is bolted on however they decide. Builder.io just open-sourced Agent-Native — a framework where the agent and the interface are equal citizens of one system you OWN. This playbook is the whole map: the one-action pattern, the rent-vs-own table, the six free apps that replace paid SaaS, and the exact commands to fork your first one.

Get the free Agent-Native Playbook

For fifteen years the deal was simple: rent the software, the vendor owns the code, the vendor controls the AI, and you bend your business to fit their app. Builder.io's Agent-Native (open source, MIT — github.com/BuilderIO/agent-native, 2.4k+ stars) is the first framework built to flip that. The core idea is a reframe: the agent and the interface are equal citizens of one system. Every action works both ways — click it with your mouse, or ask the agent to do it — and the magic is that you define that action ONCE. A schema (the inputs) plus a run function (what it does), and that single definition powers six surfaces: the UI, the agent, a plain HTTP API, an MCP server (so other AI tools can call it), agent-to-agent (so other agents can call it), and the CLI. Write the logic once; every trigger comes free. Because every action is two-way, you get things normal apps can't do: everything syncs from one database, real-time multiplayer between a human and an agent on the same document, context-awareness (the agent knows what you're looking at), agents that call other agents, and software that's self-improving — the agent adds features and fixes bugs over time. And it ships PROOF: six complete, free, open-source apps you fork and own — Clips (a screen recorder that replaces Loom, Granola, Wisprflow), Design (prototyping studio), Content (an Obsidian for MDX), Slides (Google Slides / Pitch), Analytics (Amplitude / Mixpanel), and Plans (visual plan mode for Claude Code and Codex). This free playbook is the whole thing on six pages: the one-action pattern with real code, the rent-vs-own comparison and what 'both ways' unlocks, the six apps and the SaaS each replaces, the exact create command (full template / chat / headless), the lower-friction skill route (npx @agent-native/core@latest skills add visual-plan → /visual-plan and /visual-recap in Claude Code, Codex, Cursor, Copilot), and a first-fork checklist. Honest caveats inside: it's early (v0.79), built for people who write code, and you bring your own database, host, and model. The takeaway: stop renting your software — fork it, own it, and let an agent keep improving it.

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