Look things up fast. The Cheat Sheet is a filterable list of core forms and functions, the Error Reference explains every PHEL... compiler error code and how to fix it, Agentic Coding is a single-page brief for AI pair-programming tools, and the API documents every function in every built-in namespace.
Cheat Sheet
Filterable one-page reference of Phel syntax, core functions, and idioms.
Error Reference
Every Phel compiler error code (PHEL001-PHEL310), what it means, and how to fix it.
Agent Setup
Wire an AI coding agent (Claude Code, Cursor, Copilot, Codex, Gemini, Aider) to Phel with one command: phel agent-install.
Agentic Coding
Single-page Phel reference for AI coding agents (Claude Code, Codex, Cursor, Copilot, Aider, Gemini). Self-contained syntax, idioms, interop, gotchas.
API
Browse all built-in Phel namespaces and functions.