sdd-riper

sdd-riper is a skill for Claude Code, Codex from alibaba/skill-up. It costs 15 tokens per session (117 once invoked), scanned A, original, Apache-2.0.

A gated workflow for creating and implementing software through five stages: research, design, planning, execution, and review. SDD means Solution Design Document, and RIPER names the staged process.

In plain words
What is it for?
Guiding feature work from investigation through review while requiring each project phase to be finished before the next one begins.
Why use it?
It prevents implementation from starting before requirements, design decisions, and an implementation plan have been completed.

Skill for Claude CodeCodex

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/alibaba/skill-up/multi-turn-conversation
Any agent
npx skills add alibaba/skill-up --skill multi-turn-conversation
Clone the repo
git clone --depth 1 https://github.com/alibaba/skill-up

Made for: Claude Code, Codex.

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 sdd-riper

README.md
[![agentmods](https://agentmods.dev/badge/skills/alibaba/skill-up/multi-turn-conversation.svg)](https://agentmods.dev/skills/alibaba/skill-up/multi-turn-conversation)
Your own site
<a href="https://agentmods.dev/skills/alibaba/skill-up/multi-turn-conversation"><img src="https://agentmods.dev/badge/skills/alibaba/skill-up/multi-turn-conversation.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 117 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00015 $0.00117
Opus 5 $0.00008 $0.00059
Sonnet 5 $0.00003 $0.00023
Haiku 4.5 $0.00002 $0.00012

Measured 4d ago against content hash 0029f77fd11a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sdd-riper 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 4d 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.

e2e/testdata/multi-turn-conversation/SKILL.md · 21 lines

What it actually says

SDD-RIPER Skill

Executes SDD (Solution Design Document) workflow with strict phase gating.

Phases

  1. Research - Investigate requirements
  2. Innovate - Design solutions
  3. Plan - Create implementation plan
  4. Execute - Implement code
  5. Review - Review and refine

Phase Gate

Users cannot skip phases. Each phase must be completed before moving to the next.

Files

What ships with it

5 files beside SKILL.md 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. 4d ago First seen · 21 lines · 15 tokens per session scan A 0029f77fd11a

Subscribe to this mod's changes

sdd-riper is a skill published in the GitHub repository alibaba/skill-up (831 stars, last pushed yesterday), licensed Apache-2.0. It adds 15 tokens to every session and 117 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.

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