dev: Command for Claude Code

.claude/commands/spec.md

spec is a command for Claude Code from squirrelsoft-dev/dev. It costs 7 tokens per session (619 once invoked), scanned A, original, MIT.

A command that turns a task breakdown into detailed specification files, with one specification prepared for each task.

In plain words
What is it for?
Use it after creating a task list to produce per-task specs and coordinate parallel specification work.
Why use it?
It removes the need to expand every task into implementation details by hand and records dependencies for each specification.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

This is squirrelsoft-dev/dev's own configuration. It tells Claude Code how to work on dev itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything dev configures →

Reuse

Borrowing it

Nothing to install: this file belongs to squirrelsoft-dev/dev. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/squirrelsoft-dev/dev/main/.claude/commands/spec.md
Clone the repo
git clone --depth 1 https://github.com/squirrelsoft-dev/dev

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

README.md
[![agentmods](https://agentmods.dev/badge/commands/squirrelsoft-dev/dev/spec/github.svg)](https://agentmods.dev/commands/squirrelsoft-dev/dev/spec)
Your own site
<a href="https://agentmods.dev/commands/squirrelsoft-dev/dev/spec"><img src="https://agentmods.dev/badge/commands/squirrelsoft-dev/dev/spec/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 spec

Your own site · 80×15
<a href="https://agentmods.dev/commands/squirrelsoft-dev/dev/spec"><img src="https://agentmods.dev/badge/commands/squirrelsoft-dev/dev/spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 7 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 619 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 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 $0.00007 $0.00619
Opus 5.5 $0.00003 $0.00248
Sonnet 5.5 $0.00001 $0.00124
Haiku 4.5 $0.00001 $0.00062

Measured 1mo ago against content hash 15cb8894d691, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spec 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.

.claude/commands/spec.md · 69 lines

How it starts

The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec Generator

Generate detailed specification files from a task breakdown.

Input: $ARGUMENTS is the name of a task file (maps to .claude/tasks/$ARGUMENTS.md).

Workflow

  1. Read the task list file from .claude/tasks/$ARGUMENTS.md. If it doesn't exist, tell the user and suggest running /breakdown $ARGUMENTS first.
  2. Parse all tasks — items matching the pattern - [ ] **Task title**.
  3. Create the output directory .claude/specs/$ARGUMENTS/.
  4. Use TeamCreate to create a team named spec-$ARGUMENTS.
  5. For each task, spawn an agent using the Task tool (subagent_type: general-purpose) with team_name set to spec-$ARGUMENTS. Run agents in parallel where possible.
  6. Each agent receives:
    • The task title
    • The task description (lines following the checkbox until the next task)
    • The listed files
    • Dependency info (Blocked by / Blocking)
    • The full path to write its spec file: .claude/specs/$ARGUMENTS/{task-title-kebab}.md
  7. Each agent must:
    • Read the files listed in the task to understand existing code
    • Search for relevant community skills by running npx skills find <topic> for the key technologies or patterns in the task. If a useful skill is found, run npx skills add <owner/repo@skill> to install it and note it in the spec under Implementation Details.
    • Write a spec file to .claude/specs/$ARGUMENTS/{task-title-kebab}.md using the format below
  8. After all agents complete, list the generated spec files for the user.

Spec File Format

Each agent should produce a file with this exact structure:

# Spec: <Task Title>
> From: .claude/tasks/{name}.md

## Objective
<What this task accomplishes and why>

## Current State
<Relevant existing code/architecture — agent reads the listed files>

## Requirements
- <Specific, testable requirements>

## Implementation Details
- Files to create/modify with descriptions of changes
- Key functions/types/interfaces to add
- Integration points with existing code

## Dependencies
- Blocked by: <tasks that must complete first>
- Blocking: <tasks that depend on this>

## Risks & Edge Cases
- <Potential issues and mitigations>

## Verification
- <How to confirm this task is done correctly>

Read the full file on GitHub · 69 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 · 69 lines · 7 tokens per session scan A 15cb8894d691

Subscribe to this mod's changes

spec is a command published in the GitHub repository squirrelsoft-dev/dev (17 stars, last pushed 4d ago), licensed MIT. It adds 7 tokens to every session and 619 once invoked, about $0.0000 per session on Opus 5.5. 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.