spec

spec is a command for Claude Code from az9713/addyosmani-agent-skills. It costs 12 tokens per session (131 once invoked), scanned A, a copy of spec, MIT.

A command for specification-driven development, where the requested software is described in a structured document before coding begins.

In plain words
What is it for?
Use it to clarify a new project or feature, create a SPEC.md file, and confirm the plan before writing code.
Why use it?
It turns vague requirements into agreed objectives, features, project rules, tests, and boundaries before implementation starts.

Command for Claude Code

Written for Claude Code: installed under .claude/.

Part of the agent-skills plugin — 20 skills, 7 commands, 3 agents, 1 hook shipped together

Good fit Use it to clarify a new project or feature, create a SPEC.md file, and confirm the plan before writing code.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/az9713/addyosmani-agent-skills/spec
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/az9713/addyosmani-agent-skills

Made for: Claude Code.

Or install agent-skills, the plugin that ships this one along with the rest of its 20 skills, 7 commands, 3 agents, 1 hook.

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/az9713/addyosmani-agent-skills/spec.svg)](https://agentmods.dev/commands/az9713/addyosmani-agent-skills/spec)
Your own site
<a href="https://agentmods.dev/commands/az9713/addyosmani-agent-skills/spec"><img src="https://agentmods.dev/badge/commands/az9713/addyosmani-agent-skills/spec.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 131 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 $0.00012 $0.00131
Opus 5 $0.00006 $0.00066
Sonnet 5 $0.00002 $0.00026
Haiku 4.5 $0.00001 $0.00013

Measured 8d ago against content hash ac359a9ad030, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 8d 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 spec — 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.

.claude/commands/spec.md · 16 lines

What it actually says

Invoke the agent-skills:spec-driven-development skill.

Begin by understanding what the user wants to build. Ask clarifying questions about:

  1. The objective and target users
  2. Core features and acceptance criteria
  3. Tech stack preferences and constraints
  4. Known boundaries (what to always do, ask first about, and never do)

Then generate a structured spec covering all six core areas: objective, commands, project structure, code style, testing strategy, and boundaries.

Save the spec as SPEC.md in the project root and confirm with the user before proceeding.

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. 8d ago First seen · 16 lines · 12 tokens per session scan A ac359a9ad030

Subscribe to this mod's changes

spec is a command published in the GitHub repository az9713/addyosmani-agent-skills (36 stars, last pushed 5mo ago), licensed MIT. It adds 12 tokens to every session and 131 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to spec, differing in 0 lines, and is treated as a copy.