slaunt-install appends them to the files Claude Code and Codex read at startup.
Where it writes
With
--scope project it writes to the Git root instead, which is useful if you want the instructions committed for your team. Codex uses AGENTS.override.md or AGENTS.md. Claude Code uses CLAUDE.md, then .claude/CLAUDE.md, else creates CLAUDE.md.
For Cursor and other clients, paste the raw text from slaunt.ai/api/agent-instructions into the client’s rules, e.g.
.cursor/rules/slaunt.mdc.