spec-kit-workflow

spec-kit-workflow is a skill for Claude Code from jmanhype/speckit. It costs 49 tokens per session (907 once invoked), scanned A, original, MIT.

A workflow guide for specification-driven development, where a feature is described and planned before it is implemented. It covers requirements, questions, technical plans, checklists, and tasks.

In plain words
What is it for?
Use it to define new features, clarify open questions, create implementation plans, generate quality checklists, and organize development tasks.
Why use it?
It reduces unclear requirements and missed implementation work by breaking feature development into defined phases. It keeps the written specification, plan, and task list aligned.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the SlashCommand tool.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/jmanhype/speckit/spec-kit-workflow
Any agent
npx skills add jmanhype/speckit --skill spec-kit-workflow
Clone the repo
git clone --depth 1 https://github.com/jmanhype/speckit

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for spec-kit-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/jmanhype/speckit/spec-kit-workflow.svg)](https://agentmods.dev/skills/jmanhype/speckit/spec-kit-workflow)
Your own site
<a href="https://agentmods.dev/skills/jmanhype/speckit/spec-kit-workflow"><img src="https://agentmods.dev/badge/skills/jmanhype/speckit/spec-kit-workflow.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 907 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.00907
Opus 5 $0.00024 $0.00453
Sonnet 5 $0.00010 $0.00181
Haiku 4.5 $0.00005 $0.00091

Measured 4d ago against content hash fe7583a4393d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

spec-kit-workflow scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/spec-kit-workflow/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec Kit Workflow Skill

You are assisting with a project that uses Spec Kit - a specification-driven development framework. This skill ensures proper workflow adherence.

Workflow Phases

The Spec Kit workflow follows this progression:

constitution → specify → clarify → plan → checklist → tasks → analyze → implement

Phase Descriptions

  1. Constitution (/speckit.constitution)

    • Define project-level architectural principles
    • Stored in .specify/memory/constitution.md
    • One-time setup per project
  2. Specify (/speckit.specify <description>)

    • Create user-focused specification (WHAT/WHY)
    • Technology-agnostic requirements
    • Creates specs/###-feature-name/spec.md
  3. Clarify (/speckit.clarify)

    • Resolve ambiguities in the spec
    • Maximum 3 high-impact questions
    • Updates spec.md with answers
  4. Plan (/speckit.plan)

    • Create technical implementation plan (HOW)
    • Architecture, dependencies, file structure
    • Creates plan.md in feature directory
  5. Checklist (/speckit.checklist)

    • Generate domain-specific quality checklists
    • Security, accessibility, performance
    • Creates checklists/ in feature directory
  6. Tasks (/speckit.tasks)

    • Generate executable, dependency-ordered tasks
    • Includes file paths, user story references
    • Creates tasks.md in feature directory
  7. Analyze (/speckit.analyze)

    • Cross-artifact consistency validation
    • Ensures spec → plan → tasks alignment
    • CRITICAL: Run before implementation
  8. Implement (/speckit.implement)

    • Execute tasks following dependencies
    • Run tests for each completed task
    • Update task status in tasks.md

When to Invoke This Skill

Claude should use this skill when the user:

  • Mentions adding a new feature
  • Discusses specifications or requirements
  • Asks about planning implementation
  • Wants to understand the development workflow
  • References spec.md, plan.md, or tasks.md files

Read the full file on GitHub · 124 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 124 lines · 49 tokens per session scan A fe7583a4393d

Subscribe to this mod's changes

spec-kit-workflow is a skill published in the GitHub repository jmanhype/speckit (26 stars, last pushed 5mo ago), licensed MIT. It adds 49 tokens to every session and 907 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.

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