Shared technical contracts

Specifications

Stable specifications for connected embedded systems, written independently of any one implementation.

Our specifications define how products work together without tying them to one library, language, or hardware platform. Each specification has its own public repository. Tagged releases preserve the exact normative text.

Stable Wire v1

Open specification

Portable Frame Protocol

Carry complete messages across constrained links and routed device networks with one small, predictable frame format.

Explore PFP