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Spec Kitty, a tool for Specification Driven Development (SDD) agentic projects, with kanban and git worktree isolation.

Project description

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Spec Kitty

Spec-driven development for AI coding agents.

Spec Kitty is an open-source CLI for turning product intent into a repeatable agent workflow:

spec -> plan -> tasks -> next -> review -> accept -> merge

It keeps the important context in your repository, creates work packages that agents can execute, and uses git worktrees so implementation work can happen without constantly switching branches.

PyPI version License: MIT Python 3.11+

Is It For You?

Use Spec Kitty when:

  • AI coding sessions are losing requirements, decisions, or acceptance criteria.
  • You want specs, plans, tasks, reviews, and merge state stored in the repo.
  • Multiple agents or developers need clear work package boundaries.
  • You want a local workflow first, with optional hosted tracker and sync integrations later.

It is probably overkill for one-off edits, tiny scripts, or teams that do not use Git.

What It Provides

Need Spec Kitty provides
Start from intent Guided specify, plan, and tasks workflows
Keep agents aligned Repository-native mission artifacts under kitty-specs/
Split implementation Work packages with lifecycle lanes such as planned, in_progress, for_review, and done
Avoid branch chaos Isolated git worktrees under .worktrees/
See progress Optional local kanban dashboard with spec-kitty dashboard
Integrate agents Slash commands or skills for common AI coding tools
Learn from missions Every completed mission generates a retrospective by default. Tune via .kittify/config.yaml#retrospective or charter; see how-to.

Quick Start

Install the CLI:

pipx install spec-kitty-cli

pipx is the preferred installer for the CLI because it keeps Spec Kitty in its own virtual environment and avoids the externally-managed-environment errors common on modern Linux distributions.

Other supported install methods:

uv tool install spec-kitty-cli
# or, inside an activated virtual environment
python -m pip install spec-kitty-cli

Create or initialize a project:

spec-kitty init my-project --ai claude
cd my-project
spec-kitty verify-setup

Replace claude with your agent key when needed. Common choices include codex, cursor, gemini, copilot, opencode, qwen, windsurf, kiro, vibe, pi, and letta.

Open your AI coding agent in the project and run the core workflow:

/spec-kitty.charter
/spec-kitty.specify Build a small task list app.
/spec-kitty.plan
/spec-kitty.tasks

Then let the runtime choose the next action until the mission is ready:

spec-kitty next --agent claude --mission <mission-slug>

Review, accept, merge, and close the loop:

/spec-kitty.review
/spec-kitty.accept
/spec-kitty.merge --push

After merge, run /spec-kitty-mission-review. The mission's retrospective.yaml is authored during the runtime terminus (HiC prompt or autonomous facilitator), not by merge. Once it exists, use spec-kitty retrospect summary for the cross-mission view and spec-kitty agent retrospect synthesize --mission <mission-slug> to apply any staged proposals (dry-run by default — pass --apply to mutate).

For the full walkthrough, see Your First Feature.

Everyday Commands

Command Purpose
spec-kitty init . --ai <agent> Add Spec Kitty to the current repo
spec-kitty verify-setup Check local installation and project wiring
spec-kitty dashboard Open the local mission dashboard
spec-kitty next --agent <agent> --mission <slug> Ask Spec Kitty what the agent should do next
spec-kitty upgrade Update an existing project after upgrading the CLI
spec-kitty --help Show available commands

Documentation

Start here:

Deeper topics:

Development

git clone https://github.com/Priivacy-ai/spec-kitty.git
cd spec-kitty
pip install -e ".[test]"

When testing templates from a source checkout:

export SPEC_KITTY_TEMPLATE_ROOT="$(pwd)"
spec-kitty init my-project --ai claude

See CONTRIBUTING.md for contribution guidelines.

Support

License

Spec Kitty is released under the MIT License.

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