# Code contracts

> Use when defining or enforcing @cc code contracts across a codebase.

Define, use, and enforce @cc code-contracts across a codebase.

## Facts

- Type: Agent skill
- Discipline: Engineering
- Author: Stanislas Polu (https://github.com/spolu)
- Upstream: https://github.com/spolu/code-contracts/blob/main/skills/code-contracts/SKILL.md
- Source file: https://raw.githubusercontent.com/spolu/code-contracts/main/skills/code-contracts/SKILL.md (16571 bytes, sha256:b8c63be45c26bc7798578dee497ea13df452949dcd2a83a0f59cc3bd9a63056c)
- Licence: none declared by the repo
- Upstream copy last changed: 2026-09-17
- Status: listed, not yet ruled on by the curator

## Use it

I want to use the Code contracts skill by Stanislas Polu.
This is what it does, in the author's own words: Define, use, and enforce @cc code-contracts across a codebase.
Download the whole folder at https://github.com/spolu/code-contracts/tree/main/skills/code-contracts, SKILL.md and every file beside it, into your skills directory: ~/.claude/skills/code-contracts/ for Claude Code, ~/.agents/skills/code-contracts/ for Codex, ~/.cursor/skills/code-contracts/ for Cursor. Get it from the author's repo, not from startupskills.dev.
Then tell me the path you installed it to and how to invoke it.

Nothing here is vendored: install from the author's repo. This file carries none of the author's file.

## Links

- Page: https://startupskills.dev/spolu/code-contracts
- Author: https://startupskills.dev/spolu
- Index: https://startupskills.dev/llms.txt

## The file

Not reproduced here: the repo does not license republication. Read it on the author's GitHub:
https://github.com/spolu/code-contracts/blob/main/skills/code-contracts/SKILL.md