Spektacular

Spektacular

Spektacular — Spek for short. The specs it produces are called speks.

Agent-agnostic CLI tool for spec-driven development, providing skills and integrations for coding agents (Claude, Bob, Codex, GitHub Copilot CLI, oh-my-pi, Cursor) to plan and implement work from a written spek.
Status: early development — see the releases page for the latest version.

What is Spektacular (Spek)?

Spek is a self-contained Go binary that brings spec-driven development to AI coding agents. You write a markdown spek; Spek turns it into a reviewed implementation plan and then drives a coding agent to implement it — keeping your intent reviewable at every stage.

Its core competencies:

- Self-contained binary plus installed agent skills. A single binary that, on init, installs the skills (and commands) your coding agent needs to run the Spek workflows.
- State-machine-driven workflow. Spec, plan, and implement each run as a stepwise state machine. Spek hands the agent one per-step prompt at a time (new / goto / steps), so every stage is resumable — stop, inspect, edit, and resume without losing work.
- Agent-agnostic, multi-agent support. Works with claude, bob, codex, copilot, oh-my-pi (omp), and cursor; pick the one your team already uses, or register your own.
- Project knowledge base. A searchable, layered store of conventions, architecture, gotchas, and learnings that feeds context into planning.
- Project design documents. The worked design a feature is built to (an API shape, a user-facing flow, a data format) kept wherever your team already keeps it and referenced by the spek that needs it, so speks stay readable and planning is bound to the design that was agreed.

How It Works

Spek follows a three-stage workflow — spec → plan → implement — each driven step by…