spec

spec is a command for Claude Code from rsts-dev/claude-buddy-marketplace. It costs 11 tokens per session (54 once invoked), scanned A, original, MIT.

A command that turns a natural-language feature idea into a formal written specification describing what should be built.

In plain words
What is it for?
Use it to document requirements, expected behaviour, and the scope of a feature before implementation.
Why use it?
It removes the ambiguity between an informal request and an agreed description of the feature.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Part of the buddy plugin — 6 skills, 7 commands shipped together

Good fit Use it to document requirements, expected behaviour, and the scope of a…

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/rsts-dev/claude-buddy-marketplace/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/rsts-dev/claude-buddy-marketplace

Made for: Claude Code.

Or install buddy, the plugin that ships this one along with the rest of its 6 skills, 7 commands.

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/rsts-dev/claude-buddy-marketplace/spec.svg)](https://agentmods.dev/commands/rsts-dev/claude-buddy-marketplace/spec)
Your own site
<a href="https://agentmods.dev/commands/rsts-dev/claude-buddy-marketplace/spec"><img src="https://agentmods.dev/badge/commands/rsts-dev/claude-buddy-marketplace/spec.svg" alt="Measured on agentmods" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 54 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 $0.00011 $0.00054
Opus 5 $0.00005 $0.00027
Sonnet 5 $0.00002 $0.00011
Haiku 4.5 $0.00001 $0.00005

Measured 7d ago against content hash 10c6ac6489b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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 7d 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.

plugins/buddy/commands/spec.md · 10 lines

What it actually says

Read and execute the Spec skill at skills/Spec/SKILL.md.

User provided input: $ARGUMENTS

The arguments contain the feature description to transform into a specification.

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. 7d ago First seen · 10 lines · 11 tokens per session scan A 10c6ac6489b9

Subscribe to this mod's changes

spec is a command published in the GitHub repository rsts-dev/claude-buddy-marketplace (17 stars, last pushed 16d ago), licensed MIT. It adds 11 tokens to every session and 54 once invoked, about $0.0001 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 2026-08-30.