speckit.checklist

speckit.checklist is an agent for Claude Code from racecraft-lab/Paddock. It costs 13 tokens per session (3,779 once invoked), scanned A, a copy of speckit.checklist, MIT.

A command that creates a checklist for checking whether a feature specification is clear, complete, and consistent.

In plain words
What is it for?
Use it to review requirements for missing cases, vague wording, accessibility details, and inconsistent expectations.
Why use it?
It helps catch weak requirements before development begins, without checking whether the software itself works.

Agent for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Good fit Use it to review requirements for missing cases, vague wording, accessibility details, and inconsistent expectations.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/racecraft-lab/paddock/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/racecraft-lab/Paddock

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/agents/racecraft-lab/paddock/speckit.checklist/github.svg)](https://agentmods.dev/agents/racecraft-lab/paddock/speckit.checklist)
Your own site
<a href="https://agentmods.dev/agents/racecraft-lab/paddock/speckit.checklist"><img src="https://agentmods.dev/badge/agents/racecraft-lab/paddock/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/agents/racecraft-lab/paddock/speckit.checklist"><img src="https://agentmods.dev/badge/agents/racecraft-lab/paddock/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 3,779 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 100% 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 $0.03779
Opus 5.5 $0.00005 $0.01512
Sonnet 5.5 $0.00003 $0.00756
Haiku 4.5 $0.00001 $0.00378

Measured 1mo ago against content hash 3bfb97f32862, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

Origin

This is a copy

100% identical to speckit.checklist — 0 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.

.specify/extensions/verify-tasks/.github/agents/speckit.checklist.agent.md · 296 lines

How it starts

The opening of the file, as written. The whole thing — 296 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.

User Input

$ARGUMENTS

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

Execution Steps

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

    • 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. 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?")

Read the full file on GitHub · 296 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. 1mo ago First seen · 296 lines · 13 tokens per session scan A 3bfb97f32862

Subscribe to this mod's changes

speckit.checklist is an agent published in the GitHub repository racecraft-lab/Paddock (12 stars, last pushed 3mo ago), licensed MIT. It adds 13 tokens to every session and 3,779 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to speckit.checklist, differing in 0 lines, and is treated as a copy.

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