Project rules

Repos increasingly ship instructions for coding agents — but each tool reads a different file. C2 loads all of them and prepends them to every compiled prompt, so your conventions travel with the session no matter which provider runs it.

Files it looks for

Searched in the session's working directory, in this order:

File	Convention from
AGENTS.md	Codex
CLAUDE.md	Claude Code
.cursorrules	Cursor (classic)
.github/copilot-instructions.md	GitHub Copilot
.codetwo/rules.md	C2
.cursor/rules/*.md / *.mdc	Cursor (current)

Every file that exists is included. Empty files are skipped, and each is capped so an enormous rules file can't swamp the prompt.

What it looks like

The loaded rules become a section at the top of the compiled prompt:

## Project rules

### AGENTS.md
Use tabs. Prefer small functions.

### .cursor/rules/style.md
No `unwrap()` in production code.

Seeing exactly what's sent

Hit Preview (or the command palette → “Preview compiled prompt”) to see the fully compiled prompt — rules included, skills expanded, macros substituted, and @-mentioned files inlined. That's byte-for-byte what goes to the agent.

TIP

Because rules are applied at compile time by the core, the TUI and remote sessions get them too — not just the desktop app.