spec-init

spec-init is a skill for Claude Code from blue03183/spec-tools-mcp. It costs 106 tokens per session (6,137 once invoked), scanned A, original, no licence file.

A project setup skill for spec-driven development, a way of building software from written requirements before implementation. It creates a feature folder under ai-spec/projects with a requirement template and docs folder.

In plain words
What is it for?
Use it to start a new feature, initialize a specification, or create the folders and requirement document for a project.
Why use it?
It gives a new feature a consistent place for its requirements and supporting documents before coding begins.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the spec-tools-mcp plugin — 3 skills, 1 MCP server shipped together

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.

agentmods
npx agentmods add skills/blue03183/spec-tools-mcp/spec-init
Any agent
npx skills add blue03183/spec-tools-mcp --skill spec-init
Clone the repo
git clone --depth 1 https://github.com/blue03183/spec-tools-mcp

Made for: Claude Code.

Or install spec-tools-mcp, the plugin that ships this one along with the rest of its 3 skills, 1 MCP server.

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-init

README.md
[![agentmods](https://agentmods.dev/badge/skills/blue03183/spec-tools-mcp/spec-init.svg)](https://agentmods.dev/skills/blue03183/spec-tools-mcp/spec-init)
Your own site
<a href="https://agentmods.dev/skills/blue03183/spec-tools-mcp/spec-init"><img src="https://agentmods.dev/badge/skills/blue03183/spec-tools-mcp/spec-init.svg" alt="Measured on agentmods" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,137 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00106 $0.06137
Opus 5 $0.00053 $0.03069
Sonnet 5 $0.00021 $0.01227
Haiku 4.5 $0.00011 $0.00614

Measured 2d ago against content hash 0808e965a8f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

spec-init 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 2d 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.

skills/spec-init/SKILL.md · 412 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago Changed · +137 lines · +37 tokens per session 0808e965a8f5
  2. 5d ago First seen · 275 lines · 69 tokens per session scan A d4b5b3bd8a63

Subscribe to this mod's changes

spec-init is a skill published in the GitHub repository blue03183/spec-tools-mcp (1 stars, last pushed 3d ago), with no licence file. It adds 106 tokens to every session and 6,137 once invoked, about $0.0005 per session on Opus 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 2026-08-31.

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