OpenSpec

openspec

Spec-driven development (SDD) for AI coding assistants.

Runs as openspec|macOS, Linux, Windows|openspec.dev

Open form in Otty otty.toml

Version windows

One manifest for every version

All versions

cbf115b863d04f63b1406c0ceadbebc82a0ef6882be5ec04727307ad58d3d427

dotfilescommandsautocomplete

JSON · TOML

A window holds from its version up to the next one’s. Otty picks the window from the version it finds installed, and a manifest with no window holds for all of them.