free-code: Recompiled Claude Code with Guardrails Removed, Works with Codex

Melvin Vivas · X post · 2026-04-02 · Open on X

Topics: AI Dev Tools & Productivity, AI Agents, Tool Use & MCP, AI Safety, Security & Guardrails · Level: advanced

Summary

This post shares 'free-code', a recompiled build of Claude Code's source with telemetry and security-guardrail prompts removed and experimental features turned on. One of those features is 'ultraplan', an async multi-agent planning mode. The creator notes that it works with Codex. Treat it with caution: it is an unofficial build with its safety prompts stripped out.

Key points

• free-code is a recompiled build of Claude Code's source code, not an official release.
• Telemetry and the security-guardrail prompts have been removed.
• All experimental features are enabled, including 'ultraplan' mode.
• Ultraplan is an async agentic planning mode that starts a multi-agent research session.
• According to the creator, it works with OpenAI Codex.
• Security caution: unofficial builds without guardrails carry security and licensing risks.

Resources mentioned

• free-code · tool · free
  A recompiled Claude Code build with telemetry and guardrail prompts removed and experimental features turned on.
• Claude Code · tool · code.claude.com · paid · recommended by both Bashiri Smith & Melvin Vivas
  Build agents and pipelines from the terminal; the guide's main agentic coding tool.
  Also in: Create Claude Code Plugins with /plugin-authoring (Melvin Vivas on X · notes), Claude Code mods: customize behavior and UI with plugins (Melvin Vivas on X · notes), AI Engineer Roadmap Overview: From ML Foundations to RAG, Agents & Ops (Bashiri Smith on Facebook · notes), SkillsBento: Free Plugin Marketplace for Codex and Claude Code (Melvin Vivas on X · notes) and 101 more
• OpenAI Codex · tool · openai.com · paid
  OpenAI's coding agent. In the diagram it writes code, fixes review findings and drives the build loop. The creator also used it to make this video.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Sign in with ChatGPT: Setting Usage Limits for Each App (Melvin Vivas on X · notes), Codex Cloud Environments Must Be Saved & Published Before Use (Melvin Vivas on X · notes) and 240 more