One canonical deck of skills, agents, and rules, compiled for every AI harness. Claude Code, Codex, Gemini, OpenCode: one source of truth, four native dialects.
Stage a selection from a deck, install it, prove it landed.
$ rune add core --source ~/decks/runedeck staged rune selection 'core' → .rune $ rune install ● 137 deployed $ rune doctor --target . ./.claude/skills/rune (claude) ok 31 · modified 0 · missing 0 · orphan 0
Canonical markdown with Agent Skills frontmatter. Provider variants merge at assembly: argument hints for Claude, TOML agents for Codex, remapped tools for Gemini.
Every deployed file carries SLSA provenance back to its source line.
Third-party skills enter through block-by-block review with injection linting. Every block gets a verdict: keep, adapt, or cut. Nothing lands unverdicted.