---
title: "Cameron Freer (@cameronfreer) skills · skilld"
canonical_url: "https://skilld.dev/gh/cameronfreer"
meta:
  description: "1 agent skill written by Cameron Freer on skilld."
  "og:description": "1 agent skills written by Cameron Freer."
  "og:title": "Cameron Freer on skilld"
---

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![Avatar for Cameron Freer](https://skilld.dev/_img/avatar?url=https%3A%2F%2Fgithub.com%2Fcameronfreer.png)

# **Cameron Freer**

[@cameronfreer](https://github.com/cameronfreer)person

1 skill 453

[GitHub](https://github.com/cameronfreer) [Website](http://cfreer.org/)

## Skills

### [cameronfreer/lean4-skills](https://skilld.dev/gh/cameronfreer/lean4-skills)

Lean 4 theorem proving skill and workflow pack for AI coding agents

1 skill 453

`npx skilld add cameronfreer/lean4-skills`

- [

  **/lean4**453

  Use when editing .lean files, debugging Lean 4 builds (type mismatch, sorry, failed to synthesize instance, axiom warnings, lake build errors), searching mathlib for lemmas, formalizing mathematics in Lean, finding a counterexample to, refuting, or disproving a Lean statement, or learning Lean 4 concepts. Also trigger when the user asks for help with Lean 4, mathlib, or lakefile. Do NOT trigger for Coq/Rocq, Agda, Isabelle, HOL4, Mizar, Idris, Megalodon, or other non-Lean theorem provers. /lean4 by cameronfreer](https://skilld.dev/gh/cameronfreer/lean4-skills)

Curated skills from @cameronfreer. Checked GitHub just now