Agent skill

Speckit Checklist

by kunstmusik in kunstmusik/blue

Generate a custom checklist for the current feature based on user requirements.

GPL-3.0Auto-check passedDevelopment

Install Speckit Checklist

skills CLI
$ npx skills add kunstmusik/blue --skill speckit-checklist -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install kunstmusik/blue speckit-checklist --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/kunstmusik/blue.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/speckit-checklist .claude/skills/speckit-checklist && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
speckit-checklist
GitHub stars
154
Used in
18 other repos
Token cost
~5.6k tokens
SKILL.md length
2,575 words
Files
1
Skills in repo
16
Repo updated
First seen
Licence
GPL-3.0

At a glance

Generate a custom checklist for the current feature based on user requirements.

  • Works in 8 steps: Setup: Run… → IF EXISTS: Load… → Clarify intent (dynamic): Derive up to… → …
  • Tasks that involve Spec-driven development
  • SKILL.md covers Checklist Purpose: "Unit Tests…, User Input, Pre-Execution Checks and Execution Steps, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Speckit Checklist is an agent skill from kunstmusik/blue. Generate a custom checklist for the current feature based on user requirements.

Its SKILL.md is about 5.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Requires spec-kit project structure with .specify/ directory

It sits in Development, covering Spec-driven development. The repository describes itself as: Blue - An Integrated Music Environment. The licence is GPL-3.0.

When your agent uses it

  • Tasks that involve Spec-driven development

Example prompts

  • “/speckit-checklist”

Requirements

  • Compatibility (from SKILL.md): Requires spec-kit project structure with .specify/ directory

Workflow steps

8 steps, taken from the first numbered list in SKILL.md.

  1. Setup: Run .specify/scripts/bash/check-prerequisites.sh --json --template checklist-template from repo root and parse JSON for…
  2. IF EXISTS: Load .specify/memory/constitution.md for project principles and governance constraints.
  3. Clarify intent (dynamic): Derive up to THREE initial contextual clarifying questions (no pre-baked catalog). They MUST
  4. Understand user request: Combine $ARGUMENTS + clarifying answers
  5. Load feature context: Read from FEATURE_DIR
  6. Generate checklist - Use TEMPLATE_CONTENT as the structural template and create "Unit Tests for Requirements"
  7. Structure Reference: Generate the checklist following the canonical template in .specify/templates/checklist-template.md for title, meta…
  8. Report: Output full path to checklist file, item count, and summarize whether the run created a new file or appended to an existing one…

What it can do on your machine

Read from SKILL.md and the folder at commit 3c32d58. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires spec-kit project structure with .specify/ directory

    From compatibility in the SKILL.md frontmatter.

Context cost

Speckit Checklist loads about 5.6k tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 2,575 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~24
When it runs · the whole SKILL.md, loaded when a task matches
~5.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from kunstmusik/blue at commit 3c32d58, republished under its GPL-3.0 licence (© kunstmusik). 2,575 words, ~5,641 tokens.

Download SKILL.mdSave it as .claude/skills/speckit-checklist/SKILL.md (or your agent's skills folder).
name
speckit-checklist
description
Generate a custom checklist for the current feature based on user requirements.
compatibility
Requires spec-kit project structure with .specify/ directory
metadata.author
github-spec-kit
metadata.source
templates/commands/checklist.md

Checklist Purpose: "Unit Tests for English"

CRITICAL CONCEPT: Checklists are UNIT TESTS FOR REQUIREMENTS WRITING - they validate the quality, clarity, and completeness of requirements in a given domain.

NOT for verification/testing:

  • ❌ NOT "Verify the button clicks correctly"
  • ❌ NOT "Test error handling works"
  • ❌ NOT "Confirm the API returns 200"
  • ❌ NOT checking if code/implementation matches the spec

FOR requirements quality validation:

  • ✅ "Are visual hierarchy requirements defined for all card types?" (completeness)
  • ✅ "Is 'prominent display' quantified with specific sizing/positioning?" (clarity)
  • ✅ "Are hover state requirements consistent across all interactive elements?" (consistency)
  • ✅ "Are accessibility requirements defined for keyboard navigation?" (coverage)
  • ✅ "Does the spec define what happens when logo image fails to load?" (edge cases)

Metaphor: If your spec is code written in English, the checklist is its unit test suite. You're testing whether the requirements are well-written, complete, unambiguous, and ready for implementation - NOT whether the implementation works.

Ownership and checkbox lifecycle:

  • Custom checklists generated by this command are reviewer-owned requirements-quality review artifacts.
  • [x] means the reviewer determined the requirements-quality criterion is satisfied.
  • [x] does NOT mean implementation work is complete.
  • This command generates or appends checklist items; it MUST NOT mark generated items [x].
  • An agent may assist with evaluating items only when explicitly asked by the reviewer.
  • checklists/requirements.md is a separate built-in spec-quality checklist maintained by $speckit-specify and $speckit-clarify; do not treat that exception as applying to custom checklists generated here.

User Input

text
$ARGUMENTS

You MUST consider the user input before proceeding (if not empty).

Pre-Execution Checks

Check for extension hooks (before checklist generation):

  • Check if .specify/extensions.yml exists in the project root.
  • If it exists, read it and look for entries under the hooks.before_checklist key
  • If the YAML cannot be parsed or is invalid, do not skip silently: tell the user that .specify/extensions.yml could not be read (include the parser error) and that no hooks were checked, including any mandatory (optional: false) hooks registered there, then continue normally
  • Filter out hooks where enabled is explicitly false. Treat hooks without an enabled field as enabled by default.
  • For each remaining hook, do not attempt to interpret or evaluate hook condition expressions:
    • If the hook has no condition field, or it is null/empty, treat the hook as executable
    • If the hook defines a non-empty condition, skip the hook and leave condition evaluation to the HookExecutor implementation
  • When constructing command invocations from hook command names, replace dots (.) with hyphens (-). For example, speckit.git.commit → $speckit-git-commit.
  • For each executable hook, output the following based on its optional flag:
    • Optional hook (optional: true):
      ## Extension Hooks
      
      **Optional Pre-Hook**: {extension}
      Command: `/{command}`
      Description: {description}
      
      Prompt: {prompt}
      To execute: `/{command}`
    • Mandatory hook (optional: false):
      ## Extension Hooks
      
      **Automatic Pre-Hook**: {extension}
      Executing: `/{command}`
      EXECUTE_COMMAND: {command}
      
      Wait for the result of the hook command before proceeding to the Execution Steps.
      After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal {command} id shown above, e.g. a skills-mode agent runs it as /skill:speckit-... or $speckit-...). Emitting the block alone does not run the hook.
  • If no hooks are registered or .specify/extensions.yml does not exist, skip silently

Execution Steps

  1. Setup: Run .specify/scripts/bash/check-prerequisites.sh --json --template checklist-template from repo root and parse JSON for FEATURE_DIR, AVAILABLE_DOCS list, and TEMPLATE_CONTENT.

    • All file paths must be absolute.
    • For single quotes in args like "I'm Groot", use escape syntax: e.g 'I'''m Groot' (or double-quote if possible: "I'm Groot").
  2. IF EXISTS: Load .specify/memory/constitution.md for project principles and governance constraints.

  3. Clarify intent (dynamic): Derive up to THREE initial contextual clarifying questions (no pre-baked catalog). They MUST:

    • Be generated from the user's phrasing + extracted signals from spec/plan/tasks
    • Only ask about information that materially changes checklist content
    • Be skipped individually if already unambiguous in $ARGUMENTS
    • Prefer precision over breadth

    Generation algorithm:

    1. Extract signals: feature domain keywords (e.g., auth, latency, UX, API), risk indicators ("critical", "must", "compliance"), stakeholder hints ("QA", "review", "security team"), and explicit deliverables ("a11y", "rollback", "contracts").
    2. Cluster signals into candidate focus areas (max 4) ranked by relevance.
    3. Identify probable audience & timing (author, reviewer, QA, release) if not explicit.
    4. Detect missing dimensions: scope breadth, depth/rigor, risk emphasis, exclusion boundaries, measurable acceptance criteria.
    5. Formulate questions chosen from these archetypes:
      • Scope refinement (e.g., "Should this include integration touchpoints with X and Y or stay limited to local module correctness?")
      • Risk prioritization (e.g., "Which of these potential risk areas should receive mandatory gating checks?")
      • Depth calibration (e.g., "Is this a lightweight pre-commit sanity list or a formal release gate?")
      • Audience framing (e.g., "Will this be used by the author only or peers during PR review?")
      • Boundary exclusion (e.g., "Should we explicitly exclude performance tuning items this round?")
      • Scenario class gap (e.g., "No recovery flows detected—are rollback / partial failure paths in scope?")

    Question formatting rules:

    • If presenting options, generate a compact table with columns: Option | Candidate | Why It Matters
    • Limit to A–E options maximum; omit table if a free-form answer is clearer
    • Never ask the user to restate what they already said
    • Avoid speculative categories (no hallucination). If uncertain, ask explicitly: "Confirm whether X belongs in scope."

    Defaults when interaction impossible:

    • Depth: Standard
    • Audience: Reviewer (PR) if code-related; Author otherwise
    • Focus: Top 2 relevance clusters

    Output the questions (label Q1/Q2/Q3). After answers: if ≥2 scenario classes (Alternate / Exception / Recovery / Non-Functional domain) remain unclear, you MAY ask up to TWO more targeted follow‑ups (Q4/Q5) with a one-line justification each (e.g., "Unresolved recovery path risk"). Do not exceed five total questions. Skip escalation if user explicitly declines more.

  4. Understand user request: Combine $ARGUMENTS + clarifying answers:

    • Derive checklist theme (e.g., security, review, deploy, ux)
    • Consolidate explicit must-have items mentioned by user
    • Map focus selections to category scaffolding
    • Infer any missing context from spec/plan/tasks (do NOT hallucinate)
  5. Load feature context: Read from FEATURE_DIR:

    • spec.md: Feature requirements and scope
    • plan.md (if exists): Technical details, dependencies
    • tasks.md (if exists): Implementation tasks

    Context Loading Strategy:

    • Load only necessary portions relevant to active focus areas (avoid full-file dumping)
    • Prefer summarizing long sections into concise scenario/requirement bullets
    • Use progressive disclosure: add follow-on retrieval only if gaps detected
    • If source docs are large, generate interim summary items instead of embedding raw text
  6. Generate checklist - Use TEMPLATE_CONTENT as the structural template and create "Unit Tests for Requirements":

    • Create FEATURE_DIR/checklists/ directory if it doesn't exist
    • Generate unique checklist filename:
      • Use short, descriptive name based on domain (e.g., ux.md, api.md, security.md)
      • Format: [domain].md
    • File handling behavior:
      • If file does NOT exist: Create new file and number items starting from CHK001
      • If file exists: Append new items to existing file, continuing from the last CHK ID (e.g., if last item is CHK015, start new items at CHK016)
    • Never delete or replace existing checklist content - always preserve and append
    • Leave every newly generated item unchecked ([ ]); checkbox state belongs to the reviewer

    CORE PRINCIPLE - Test the Requirements, Not the Implementation: Every checklist item MUST evaluate the REQUIREMENTS THEMSELVES for:

    • Completeness: Are all necessary requirements present?
    • Clarity: Are requirements unambiguous and specific?
    • Consistency: Do requirements align with each other?
    • Measurability: Can requirements be objectively verified?
    • Coverage: Are all scenarios/edge cases addressed?

    Category Structure - Group items by requirement quality dimensions:

    • Requirement Completeness (Are all necessary requirements documented?)
    • Requirement Clarity (Are requirements specific and unambiguous?)
    • Requirement Consistency (Do requirements align without conflicts?)
    • Acceptance Criteria Quality (Are success criteria measurable?)
    • Scenario Coverage (Are all flows/cases addressed?)
    • Edge Case Coverage (Are boundary conditions defined?)
    • Non-Functional Requirements (Performance, Security, Accessibility, etc. - are they specified?)
    • Dependencies & Assumptions (Are they documented and validated?)
    • Ambiguities & Conflicts (What needs clarification?)

    HOW TO WRITE CHECKLIST ITEMS - "Unit Tests for English":

    ❌ WRONG (Testing implementation):

    • "Verify landing page displays 3 episode cards"
    • "Test hover states work on desktop"
    • "Confirm logo click navigates home"

    ✅ CORRECT (Testing requirements quality):

    • "Are the exact number and layout of featured episodes specified?" [Completeness]
    • "Is 'prominent display' quantified with specific sizing/positioning?" [Clarity]
    • "Are hover state requirements consistent across all interactive elements?" [Consistency]
    • "Are keyboard navigation requirements defined for all interactive UI?" [Coverage]
    • "Is the fallback behavior specified when logo image fails to load?" [Edge Cases]
    • "Are loading states defined for asynchronous episode data?" [Completeness]
    • "Does the spec define visual hierarchy for competing UI elements?" [Clarity]

    ITEM STRUCTURE: Each item should follow this pattern:

    • Question format asking about requirement quality
    • Focus on what's WRITTEN (or not written) in the spec/plan
    • Include quality dimension in brackets [Completeness/Clarity/Consistency/etc.]
    • Reference spec section [Spec §X.Y] when checking existing requirements
    • Use [Gap] marker when checking for missing requirements

    EXAMPLES BY QUALITY DIMENSION:

    Completeness:

    • "Are error handling requirements defined for all API failure modes? [Gap]"
    • "Are accessibility requirements specified for all interactive elements? [Completeness]"
    • "Are mobile breakpoint requirements defined for responsive layouts? [Gap]"

    Clarity:

    • "Is 'fast loading' quantified with specific timing thresholds? [Clarity, Spec §NFR-2]"
    • "Are 'related episodes' selection criteria explicitly defined? [Clarity, Spec §FR-5]"
    • "Is 'prominent' defined with measurable visual properties? [Ambiguity, Spec §FR-4]"

    Consistency:

    • "Do navigation requirements align across all pages? [Consistency, Spec §FR-10]"
    • "Are card component requirements consistent between landing and detail pages? [Consistency]"

    Coverage:

    • "Are requirements defined for zero-state scenarios (no episodes)? [Coverage, Edge Case]"
    • "Are concurrent user interaction scenarios addressed? [Coverage, Gap]"
    • "Are requirements specified for partial data loading failures? [Coverage, Exception Flow]"

    Measurability:

    • "Are visual hierarchy requirements measurable/testable? [Acceptance Criteria, Spec §FR-1]"
    • "Can 'balanced visual weight' be objectively verified? [Measurability, Spec §FR-2]"

    Scenario Classification & Coverage (Requirements Quality Focus):

    • Check if requirements exist for: Primary, Alternate, Exception/Error, Recovery, Non-Functional scenarios
    • For each scenario class, ask: "Are [scenario type] requirements complete, clear, and consistent?"
    • If scenario class missing: "Are [scenario type] requirements intentionally excluded or missing? [Gap]"
    • Include resilience/rollback when state mutation occurs: "Are rollback requirements defined for migration failures? [Gap]"

    Traceability Requirements:

    • MINIMUM: ≥80% of items MUST include at least one traceability reference
    • Each item should reference: spec section [Spec §X.Y], or use markers: [Gap], [Ambiguity], [Conflict], [Assumption]
    • If no ID system exists: "Is a requirement & acceptance criteria ID scheme established? [Traceability]"

    Surface & Resolve Issues (Requirements Quality Problems): Ask questions about the requirements themselves:

    • Ambiguities: "Is the term 'fast' quantified with specific metrics? [Ambiguity, Spec §NFR-1]"
    • Conflicts: "Do navigation requirements conflict between §FR-10 and §FR-10a? [Conflict]"
    • Assumptions: "Is the assumption of 'always available podcast API' validated? [Assumption]"
    • Dependencies: "Are external podcast API requirements documented? [Dependency, Gap]"
    • Missing definitions: "Is 'visual hierarchy' defined with measurable criteria? [Gap]"

    Content Consolidation:

    • Soft cap: If raw candidate items > 40, prioritize by risk/impact
    • Merge near-duplicates checking the same requirement aspect
    • If >5 low-impact edge cases, create one item: "Are edge cases X, Y, Z addressed in requirements? [Coverage]"

    🚫 ABSOLUTELY PROHIBITED - These make it an implementation test, not a requirements test:

    • ❌ Any item starting with "Verify", "Test", "Confirm", "Check" + implementation behavior
    • ❌ References to code execution, user actions, system behavior
    • ❌ "Displays correctly", "works properly", "functions as expected"
    • ❌ "Click", "navigate", "render", "load", "execute"
    • ❌ Test cases, test plans, QA procedures
    • ❌ Implementation details (frameworks, APIs, algorithms)

    ✅ REQUIRED PATTERNS - These test requirements quality:

    • ✅ "Are [requirement type] defined/specified/documented for [scenario]?"
    • ✅ "Is [vague term] quantified/clarified with specific criteria?"
    • ✅ "Are requirements consistent between [section A] and [section B]?"
    • ✅ "Can [requirement] be objectively measured/verified?"
    • ✅ "Are [edge cases/scenarios] addressed in requirements?"
    • ✅ "Does the spec define [missing aspect]?"
  7. Structure Reference: Generate the checklist following the canonical template in .specify/templates/checklist-template.md for title, meta section, category headings, ownership note, notes section, and ID formatting. If template is unavailable, use: H1 title, purpose/created meta lines, an ownership note explaining that [x] means reviewer approval of requirements quality, ## category sections containing - [ ] CHK### <requirement item> lines with globally incrementing IDs starting at CHK001, and notes that $speckit-implement reads checklist state but does not modify markers.

  8. Report: Output full path to checklist file, item count, and summarize whether the run created a new file or appended to an existing one. Summarize:

    • Focus areas selected
    • Depth level
    • Actor/timing
    • Any explicit user-specified must-have items incorporated
Show full SKILL.md (620 more words)Show less

Important: Each $speckit-checklist command invocation uses a short, descriptive checklist filename and either creates a new file or appends to an existing one. This allows:

  • Multiple checklists of different types (e.g., ux.md, test.md, security.md)
  • Simple, memorable filenames that indicate checklist purpose
  • Easy identification and navigation in the checklists/ folder

To avoid clutter, use descriptive types and clean up obsolete checklists when done.

Example Checklist Types & Sample Items

UX Requirements Quality: ux.md

Sample items (testing the requirements, NOT the implementation):

  • "Are visual hierarchy requirements defined with measurable criteria? [Clarity, Spec §FR-1]"
  • "Is the number and positioning of UI elements explicitly specified? [Completeness, Spec §FR-1]"
  • "Are interaction state requirements (hover, focus, active) consistently defined? [Consistency]"
  • "Are accessibility requirements specified for all interactive elements? [Coverage, Gap]"
  • "Is fallback behavior defined when images fail to load? [Edge Case, Gap]"
  • "Can 'prominent display' be objectively measured? [Measurability, Spec §FR-4]"

API Requirements Quality: api.md

Sample items:

  • "Are error response formats specified for all failure scenarios? [Completeness]"
  • "Are rate limiting requirements quantified with specific thresholds? [Clarity]"
  • "Are authentication requirements consistent across all endpoints? [Consistency]"
  • "Are retry/timeout requirements defined for external dependencies? [Coverage, Gap]"
  • "Is versioning strategy documented in requirements? [Gap]"

Performance Requirements Quality: performance.md

Sample items:

  • "Are performance requirements quantified with specific metrics? [Clarity]"
  • "Are performance targets defined for all critical user journeys? [Coverage]"
  • "Are performance requirements under different load conditions specified? [Completeness]"
  • "Can performance requirements be objectively measured? [Measurability]"
  • "Are degradation requirements defined for high-load scenarios? [Edge Case, Gap]"

Security Requirements Quality: security.md

Sample items:

  • "Are authentication requirements specified for all protected resources? [Coverage]"
  • "Are data protection requirements defined for sensitive information? [Completeness]"
  • "Is the threat model documented and requirements aligned to it? [Traceability]"
  • "Are security requirements consistent with compliance obligations? [Consistency]"
  • "Are security failure/breach response requirements defined? [Gap, Exception Flow]"

Anti-Examples: What NOT To Do

❌ WRONG - These test implementation, not requirements:

markdown
- [ ] CHK001 - Verify landing page displays 3 episode cards [Spec §FR-001]
- [ ] CHK002 - Test hover states work correctly on desktop [Spec §FR-003]
- [ ] CHK003 - Confirm logo click navigates to home page [Spec §FR-010]
- [ ] CHK004 - Check that related episodes section shows 3-5 items [Spec §FR-005]

✅ CORRECT - These test requirements quality:

markdown
- [ ] CHK001 - Are the number and layout of featured episodes explicitly specified? [Completeness, Spec §FR-001]
- [ ] CHK002 - Are hover state requirements consistently defined for all interactive elements? [Consistency, Spec §FR-003]
- [ ] CHK003 - Are navigation requirements clear for all clickable brand elements? [Clarity, Spec §FR-010]
- [ ] CHK004 - Is the selection criteria for related episodes documented? [Gap, Spec §FR-005]
- [ ] CHK005 - Are loading state requirements defined for asynchronous episode data? [Gap]
- [ ] CHK006 - Can "visual hierarchy" requirements be objectively measured? [Measurability, Spec §FR-001]

Key Differences:

  • Wrong: Tests if the system works correctly
  • Correct: Tests if the requirements are written correctly
  • Wrong: Verification of behavior
  • Correct: Validation of requirement quality
  • Wrong: "Does it do X?"
  • Correct: "Is X clearly specified?"

Post-Execution Checks

Check for extension hooks (after checklist generation): Check if .specify/extensions.yml exists in the project root.

  • If it exists, read it and look for entries under the hooks.after_checklist key
  • If the YAML cannot be parsed or is invalid, do not skip silently: tell the user that .specify/extensions.yml could not be read (include the parser error) and that no hooks were checked, including any mandatory (optional: false) hooks registered there, then continue normally
  • Filter out hooks where enabled is explicitly false. Treat hooks without an enabled field as enabled by default.
  • For each remaining hook, do not attempt to interpret or evaluate hook condition expressions:
    • If the hook has no condition field, or it is null/empty, treat the hook as executable
    • If the hook defines a non-empty condition, skip the hook and leave condition evaluation to the HookExecutor implementation
  • When constructing command invocations from hook command names, replace dots (.) with hyphens (-). For example, speckit.git.commit → $speckit-git-commit.
  • For each executable hook, output the following based on its optional flag:
    • Optional hook (optional: true):
      ## Extension Hooks
      
      **Optional Hook**: {extension}
      Command: `/{command}`
      Description: {description}
      
      Prompt: {prompt}
      To execute: `/{command}`
    • Mandatory hook (optional: false):
      ## Extension Hooks
      
      **Automatic Hook**: {extension}
      Executing: `/{command}`
      EXECUTE_COMMAND: {command}
      After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal {command} id shown above, e.g. a skills-mode agent runs it as /skill:speckit-... or $speckit-...). Emitting the block alone does not run the hook.
  • If no hooks are registered or .specify/extensions.yml does not exist, skip silently

© kunstmusik, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/speckit-checklist of kunstmusik/blue.

Open the folder on GitHubat commit 3c32d58

Used in 18 other repositories

We found 20 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 18 other GitHub owners. This page covers the copy in kunstmusik/blue, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Speckit Checklist next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Speckit Checklist compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
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OpenSpec Bulk Change ArchiverFission-AI/OpenSpec72k2 repos~5.6kAutomated safety check: PassMIT
Speckit ConstitutionWeihanLi/WeihanLi.Common24212 repos~2.1kAutomated safety check: PassApache-2.0
Review Spdzhu1090093659/spec_driven_develop987—~1.5kAutomated safety check: PassMIT

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All 16 skills in this repo
  • Speckit Plan

    kunstmusik/blue

    Execute the implementation planning workflow using the plan template to generate design artifacts.

    154 GitHub starsUsed in 19 repos~2.1k tokens
    Auto-check passed
  • Speckit Specify

    kunstmusik/blue

    Create or update the feature specification from a natural language feature description.

    154 GitHub starsUsed in 19 repos~4.7k tokens
    Auto-check passed
  • Speckit Tasks

    kunstmusik/blue

    Generate an actionable, dependency-ordered tasks.md for the feature based on available design artifacts.

    154 GitHub starsUsed in 19 repos~3k tokens
    Auto-check passed
  • Speckit Analyze

    kunstmusik/blue

    Perform a non-destructive cross-artifact consistency and quality analysis across spec.md, plan.md, and tasks.md after task generation.

    154 GitHub starsUsed in 18 repos~3k tokens
    Auto-check passed
  • Karpathy Coder

    kunstmusik/blue

    A skill your agent uses when writing, reviewing, or committing code to enforce Karpathy's 4 coding principles — surface assumptions before coding, keep it simple, make surgical changes, define…

    154 GitHub starsUsed in 1 repo~1.4k tokens
    Auto-check passed
  • Speckit Clarify

    kunstmusik/blue

    Identify underspecified areas in the current feature spec by asking up to 5 highly targeted clarification questions and encoding answers back into the spec.

    154 GitHub starsUsed in 18 repos~4.9k tokens
    Auto-check passed

Questions about Speckit Checklist

What does Speckit Checklist do?

Generate a custom checklist for the current feature based on user requirements. Speckit Checklist is an agent skill from kunstmusik/blue. Generate a custom checklist for the current feature based on user requirements.

When should I use Speckit Checklist?

Speckit Checklist fits situations like: tasks that involve Spec-driven development.

How do I install Speckit Checklist in Claude Code?

Run `npx skills add kunstmusik/blue --skill speckit-checklist -a claude-code`. Or copy the skill folder (.agents/skills/speckit-checklist in kunstmusik/blue) into .claude/skills/speckit-checklist in your project. Claude Code loads it when a task matches its description.

How do I install Speckit Checklist in Codex?

Run `npx skills add kunstmusik/blue --skill speckit-checklist -a codex`. Or copy the skill folder (.agents/skills/speckit-checklist in kunstmusik/blue) into .agents/skills/speckit-checklist in your project. Codex loads it when a task matches its description.

Can I use Speckit Checklist in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add kunstmusik/blue --skill speckit-checklist -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/speckit-checklist, .gemini/skills/speckit-checklist, .github/skills/speckit-checklist and .opencode/skills/speckit-checklist in your project.

What does Speckit Checklist need to run?

SKILL.md names no scripts, command-line tools or credentials: Speckit Checklist is instructions for the agent only. Compatibility (from SKILL.md): Requires spec-kit project structure with .specify/ directory.

Does Speckit Checklist access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Speckit Checklist safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Speckit Checklist use?

Speckit Checklist is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Speckit Checklist use?

About 5.6k tokens (SKILL.md is roughly 23k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Speckit Checklist?

Skills that share tags, products or a category with Speckit Checklist: Backprop: Bug-to-Spec Protocol (JuliusBrussee/cavekit, 1.2k stars), Fix (genkovich/sdd, 171 stars), OpenSpec Bulk Change Archiver (Fission-AI/OpenSpec, 72k stars) and Speckit Constitution (WeihanLi/WeihanLi.Common, 242 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Speckit Checklist?

kunstmusik (a GitHub user) maintains it in kunstmusik/blue, which has 154 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 8, 2026.

Source: kunstmusik/blue on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.