agent-alchemy-sdd-tools

agent-alchemy-sdd-tools is a plugin for Claude Code from sequenzia/agent-alchemy. Its manifest loads nothing; the 5 skills, 6 agents it bundles cost 581 tokens per session together, scanned A, original, MIT.

A set of specification-driven development tools for AI agents. This approach uses a written description of the expected behavior to guide implementation.

In plain words
What is it for?
Use it to define specifications and guide agent-based software development.
Why use it?
It helps agents work from clear requirements before and during coding.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to define specifications and guide agent-based software development.

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Install in Claude Code
/plugin marketplace add sequenzia/agent-alchemy/plugin install agent-alchemy-sdd-tools
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/sequenzia/agent-alchemy

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 agent-alchemy-sdd-tools

README.md
[![agentmods](https://agentmods.dev/badge/plugins/sequenzia/agent-alchemy/agent-alchemy-sdd-tools.svg)](https://agentmods.dev/plugins/sequenzia/agent-alchemy/agent-alchemy-sdd-tools)
Your own site
<a href="https://agentmods.dev/plugins/sequenzia/agent-alchemy/agent-alchemy-sdd-tools"><img src="https://agentmods.dev/badge/plugins/sequenzia/agent-alchemy/agent-alchemy-sdd-tools.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 5 skills, 6 agents cost 581 tokens a session between them.
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.
Security

Grade A, and why

agent-alchemy-sdd-tools 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 3d 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-plugin/marketplace.json#agent-alchemy-sdd-tools · 9 lines

What it actually says

{
  "name": "agent-alchemy-sdd-tools",
  "version": "0.2.11",
  "description": "Agent Alchemy SDD Tools — Spec Driven Development tools for AI agents",
  "source": "./claude/sdd-tools",
  "homepage": "https://github.com/sequenzia/agent-alchemy/tree/main/claude/sdd-tools",
  "repository": "https://github.com/sequenzia/agent-alchemy/tree/main/claude/sdd-tools",
  "license": "MIT"
}
Contents

What it installs

The manifest is a name and a version. 5 skills, 6 agents travel with it, and installing the plugin installs all of them — 581 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#agent-alchemy-sdd-tools in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 9 lines scan A 190412130321

Subscribe to this mod's changes

agent-alchemy-sdd-tools is a plugin published in the GitHub repository sequenzia/agent-alchemy (44 stars, last pushed 3mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-03.