speckit.checklist

speckit.checklist is a command for Claude Code from HelixDevelopment/code. It costs 13 tokens per session (4,911 once invoked), scanned A, a copy of checklist, MIT.

A requirements checklist generator that creates questions about whether a feature specification is complete, clear, consistent, and unambiguous. It treats the checklist as a review of the written requirements, not as software testing.

In plain words
What is it for?
Use it to review areas such as accessibility, edge cases, visual rules, and other requirement gaps.
Why use it?
It helps find missing decisions and vague requirements before implementation starts.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Good fit Use it to review areas such as accessibility, edge cases, visual rules, and other requirement gaps.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/helixdevelopment/code/speckit.checklist
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.

Clone the repo
git clone --depth 1 https://github.com/HelixDevelopment/code

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 speckit.checklist

README.md
[![agentmods](https://agentmods.dev/badge/commands/helixdevelopment/code/speckit.checklist/github.svg)](https://agentmods.dev/commands/helixdevelopment/code/speckit.checklist)
Your own site
<a href="https://agentmods.dev/commands/helixdevelopment/code/speckit.checklist"><img src="https://agentmods.dev/badge/commands/helixdevelopment/code/speckit.checklist/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for speckit.checklist

Your own site · 80×15
<a href="https://agentmods.dev/commands/helixdevelopment/code/speckit.checklist"><img src="https://agentmods.dev/badge/commands/helixdevelopment/code/speckit.checklist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,911 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 98% copy Near-identical to another mod 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 $0.00013 $0.04911
Opus 5 $0.00006 $0.02455
Sonnet 5 $0.00003 $0.00982
Haiku 4.5 $0.00001 $0.00491

Measured yesterday against content hash fa58b19e2604, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-15, from the pricing page.

Security

Grade A, and why

speckit.checklist 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 yesterday.

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.

Origin

This is a copy

98% identical to checklist — 14 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.kilo/commands/speckit.checklist.md · 376 lines

How it starts

The opening of the file, as written. The whole thing — 376 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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

$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
  • 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

Read the full file on GitHub · 376 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. yesterday Changed fa58b19e2604
  2. 4d ago First seen · 376 lines · 13 tokens per session scan A efca0a3d9dd3

Subscribe to this mod's changes

speckit.checklist is a command published in the GitHub repository HelixDevelopment/code (2 stars, last pushed 2d ago), licensed MIT. It adds 13 tokens to every session and 4,911 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to checklist, differing in 14 lines, and is treated as a copy.