ClaudSkills / Science & Research / science-misc

Riper

Q: What is a Claude Code skill and how does the Riper skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Riper is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Science & Research · Sub-category: science-misc · Last updated: 2026-06-13

type:review

RIPER methodology orchestrator — Research → Innovate → Plan → Execute → Review — the FOURTH instance of the AD/AID-PDLC sub-cycle contract (ADR-010 / RFC-018). Drives a bug / scoped change / investigation in an EXISTING active system through five modes, MAIN-SESSION-orchestrated (hook-gate=No → no dispatched master, no hook), with a mandatory independent C4 verifier at every mode gate and — uniquely — a dedicated C4+C6 on the non-freezable Research product (a Research NOTE + an `## Pinned revision` EVID + a Plan-gate pin-freshness re-check): RIPER is the first instance to exercise ADR-010's conditional-freeze path end-to-end. Each phase delegates to existing fpl-skills (/research, /refine or /fpf-decompose, /rfc create, /sprint or /forge-cycle, /audit) with explicit phase tracking. **MCP-first per PRD-022 Tier A** — forgeplan artifact creation uses `mcp__forgeplan__forgeplan_new` + `_link` + `_validate` when MCP is available; CLI fallback (`bash forgeplan ...`) only when MCP server not connected. Triggers (EN/RU) — "riper", "research innovate plan execute review", "/riper", "пройди riper", "RIPER цикл", "production bug", "investigate before fixing".

About this skill (catalog notes)

Riper includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); 6 code blocks for direct copy-paste. At roughly 2,523 words the SKILL.md is on the longer end of the catalog distribution.

Source: forgeplan.dev
Original author: ForgePlan
Indexed lastmod: 2026-06-13
Catalog position: Science & Research · science-misc
Indexed related skills: 10

How Riper fits the catalog

Riper sits in the Science & Research category under the science-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Walks a task through the five RIPER phases — Research → Innovate → Plan → Execute → Review — by delegating to the right existing fpl-skill at each phase, with explicit progress tracking. RIPER is not a separate engine; it's a vocabulary overlay on top of skills you already have.

What this skill does

Riper is a community-contributed Claude Code skill in the science-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/riper/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Riper Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 117,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/riper
curl -L https://claudskills.com/skills/riper/SKILL.md \
  -o ~/.claude/skills/riper/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/riper/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/riper/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\riper\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Riper Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/riper/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Riper skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Riper skill?

Use Riper when your Claude Code task falls under the Science & Research category — specifically in the science misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Riper" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the Riper skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Riper is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/ForgePlan/marketplace/blob/fdafeb724f33c0997fb871e4c6f6f3743cde7c2b/plugins/fpl-skills/skills/riper/SKILL.md
Author: ForgePlan
Website: https://forgeplan.dev

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ForgePlan. (2026). Riper [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/riper/

BibTeX

@misc{riper-2026,
  author    = {ForgePlan},
  title     = {Riper [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/riper/}
}

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Browse all Science & Research skills → Top 100 skills

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