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speckit-plan

Generates implementation plans and design artifacts from feature specifications using the spec-kit workflow.

1|Updated Aug 5, 2026
Search Tags:#implementation planning#workflow automation#software design#feature specification#data model#spec-kit#design artifacts
One-click install
npx skills add https://github.com/pieberrykinnie/hapa --skill speckit-plan-pieberrykinnie
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: speckit-plan
Source: https://github.com/pieberrykinnie/hapa/tree/main/.agents/skills/speckit-plan
Command: npx skills add https://github.com/pieberrykinnie/hapa --skill speckit-plan-pieberrykinnie

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Turning a feature specification into a concrete implementation plan requires resolving technical unknowns, designing data models, and defining contracts, which is time-consuming when done manually. ## Core Features & Use Cases - Automated Planning Workflow: Runs the spec-kit plan workflow to fill technical context, evaluate constitution gates, and mark unknowns as NEEDS CLARIFICATION. - Design Artifact Generation: Produces research.md, data-model.md, contracts/, and quickstart.md from the feature specification. - Extension Hook Support: Executes optional and mandatory pre/post hooks defined in .specify/extensions.yml. - Use Case: After writing a feature spec in a spec-kit project, invoke this Skill to automatically research unknowns, design the data model, and generate a validated implementation plan. ## Quick Start Ask the agent to run the speckit plan workflow for the current feature branch to generate the implementation plan and design artifacts.

Frequently Asked Questions about speckit-plan

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate an implementation plan from a feature spec?▼

Run the speckit plan workflow in a spec-kit project. It executes setup-plan.sh, loads the feature spec and constitution, resolves unknowns in research.md, then generates data-model.md, contracts, and quickstart.md.

What artifacts does the spec-kit planning phase produce?▼

The planning phase produces research.md with resolved clarifications, data-model.md with entities and validation rules, a contracts/ directory for external interfaces, and quickstart.md with runnable validation scenarios.

Does speckit-plan require a specific project structure?▼

Yes, it requires a spec-kit project with a .specify/ directory containing scripts/bash/setup-plan.sh and memory/constitution.md. Without this structure the setup step cannot locate the feature spec and plan template.

What are extension hooks in the spec-kit plan workflow?▼

Extension hooks are commands defined under hooks.before_plan and hooks.after_plan in .specify/extensions.yml. Mandatory hooks are executed automatically, while optional hooks are presented for the user to run manually.

Why does the plan workflow stop with a gate failure error?▼

The workflow errors when constitution check violations are unjustified or NEEDS CLARIFICATION items remain unresolved after Phase 0 research. Resolve the unknowns or justify violations in the plan to proceed.

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