# thereef.ink — llms.txt > The Reef is the open-source cooperative ecosystem behind the Claw-family > clients. This file is for LLMs and agents inspecting the site to understand > what it is, what's downloadable, and how to engage. ## What it is - **The Reef** is a cooperative ecosystem, not a product. It defines a skill admission gate (Pincers), a manifest format (`.claw`), a governance layer (Carapace), and a narrative record (Lobster King Chronicle). - **The Reef's commercial steward** is The Dark Factory Ltd (Company No. 17050402, England & Wales). The steward sells production capability; the Reef itself is open by design. - The Reef is a **separate brand** from The Dark Factory. Reef materials live at thereef.ink; factory materials live at thedarkfactory.co.uk. ## Claw-family clients - **Grapple** — macOS Apple Silicon, uses on-device Apple Foundation Models for inference. Downloadable now at `/downloads/GrappleHello-macOS-arm64.tar.gz`. - **SteelClaw** — SPARK-Ada-verified admission gate, for classified or regulated deployments. Commercial. Coming soon. - **OpenClaw** — the cross-platform Go reference implementation. Open source. Public release pending. All three speak the same `.claw` manifest and connect to the same Reef. ## How to engage - Inspect a `.claw` skill manifest? The format is signed JSON with a `carapace_alignment` block from Pincers admission. - Want SteelClaw interest list? mailto:tony.gair@thedarkfactory.co.uk - Build your own Claw-family client? The protocol and admission policy are documented in the open-source repositories (links pending public release).