A Storybook upgrade guide. Storybook is a tool for developing and testing user-interface components separately from a full application.

Use it in projects that already contain Storybook and need an upgrade to version 10.5 or newer, or to the current preview version if that release is not available.

It provides the instructions needed when an existing Storybook project must be moved to a newer version.

upgrade — Skill for Claude Code and Codex by storybookjs/mcp

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.

Any agent

npx skills add storybookjs/mcp --skill upgrade

Clone the repo

git clone --depth 1 https://github.com/storybookjs/mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/storybookjs/mcp/upgrade/github.svg)](https://agentmods.dev/skills/storybookjs/mcp/upgrade)

Your own site

<a href="https://agentmods.dev/skills/storybookjs/mcp/upgrade"><img src="https://agentmods.dev/badge/skills/storybookjs/mcp/upgrade/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/storybookjs/mcp/upgrade"><img src="https://agentmods.dev/badge/skills/storybookjs/mcp/upgrade.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 104 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 86% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00014	$0.00104
Opus 5.5	$0.00006	$0.00042
Sonnet 5.5	$0.00003	$0.00021
Haiku 4.5	$0.00001	$0.00010

Measured 2mo ago against content hash c74f01760afe, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

upgrade 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 2mo 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.

Origin

This is a copy

86% identical to storybook-upgrade — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

packages/codex-plugin/plugins/storybook/skills/upgrade/SKILL.md · 11 lines

What it actually says

Storybook must end up at version 10.5 or later (or next while 10.5 is not yet released).

Read https://storybook.js.org/docs/releases/upgrading.md in its entirety to get the latest Storybook upgrade instructions.

If the latest stable release is still below 10.5, upgrade to the prerelease instead with npx storybook@next upgrade.

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.

2mo ago First seen · 11 lines · 14 tokens per session scan A c74f01760afe

Subscribe to this mod's changes

upgrade is a skill published in the GitHub repository storybookjs/mcp (271 stars, last pushed 2mo ago), licensed MIT. It adds 14 tokens to every session and 104 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 86% identical to storybook-upgrade, differing in 2 lines, and is treated as a copy.

Frontend

upgrade next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
upgradestorybookjs/mcp	Skill	271	2mo ago	MIT	A	14	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code