Plugin · Claude Code · Development Tools

Utakatakyosui C2lab

utakatakyosui-c2lab is a Claude Code plugin marketplace for the Build phase that bundles 31 dev, memory, observability, and workflow plugins for Utakata-style agent tooling.

by UtakataKyosui · github.com/UtakataKyosui/C2Lab

Browse Utakata’s C2Lab Claude Code marketplace for Japanese and English dev plugins spanning memory, Obsidian, git, cost tracking, a11y, and monorepo tooling.

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One vote per signed-in builder - it helps surface the tools the community actually relies on.
Install

Add it to Claude Code

Install the plugin in Claude Code. One command, paste-ready.

Install the plugin
/plugin install utakatakyosui-c2lab@UtakataKyosui/C2Lab
Add to ClaudeUse the Agent APISkillselion is itself an MCP server - your agent can fetch this config directly.
Agent API

Built to be called by your agent

Skillselion is itself an MCP server. Your agent can pull this entry and a paste-ready install config straight from the API - no copy-paste.

Retrieve this entry with skillselion.get_details("plugin:UtakataKyosui/C2Lab") and the paste-ready config with skillselion.get_install_config("plugin:UtakataKyosui/C2Lab").

About

What it does

utakatakyosui-c2lab is Utakata’s Claude Code Plugin Marketplace—a large community catalog of 31 plugins aimed at solo and small-team builders who want Claude Code to behave like a full dev environment rather than a plain chat wrapper. Entries touch long-term memory and Obsidian knowledge bases, OpenTelemetry export to OpenObserve, PR and issue automation via GitHub CLI, monorepo tasks with moon and Bun, Japanese-language workflows, color and a11y enforcement, and optional local LLM bridges. Because the bundle is broad, you treat C2Lab as a journey-wide toolbox: pick individual plugins when you hit Idea research notes in Obsidian, Validate scoping with kanban or consultation helpers, Build with codegen and IPC mobile motifs, Ship with code review and coverage plugins, and Operate with observability and cost optimizers. It is a curated marketplace, not one skill—install only the plugins that match your stack after reading each plugin’s scope in the repo.

Highlights

  • 31 plugins in one Claude Code Plugin Marketplace from UtakataKyosui/C2Lab
  • Spans Claude memory, Obsidian vault paths, OpenTelemetry/OpenObserve, and dev cost JSON tracking
  • Includes git/gh PR flows, jujutsu (jj), moonrepo, Bun/npm tooling, and cross-platform IPC motifs
  • Accessibility enforcement with CIE76/CIE94/CIEDE2000 and WCAG contrast workflows
  • ActivityPub, JSON-LD, and federation keywords for builders touching fediverse or structured data stacks

Why builders use it

You outgrow a single Claude Code plugin and need a organized marketplace for memory, git, Obsidian, costs, and quality gates without assembling everything from scratch.

After adding the marketplace, you install targeted C2Lab plugins so Claude Code gains memory, devops, a11y, and knowledge-base capabilities matched to your project.

At a glance

  • Type - Plugin in Development Tools.
  • Adoption - 0 installs, 3 stars, 0 votes.

FAQ

Who is utakatakyosui-c2lab for?

Claude Code users—especially those OK with Japanese catalog context—who want a wide plugin lab for memory, devtools, git, Obsidian, and observability.

When should I use utakatakyosui-c2lab?

Use it when you are standardizing Claude Code across build, review, and operate tasks and prefer picking plugins from one 31-entry marketplace.

How do I add utakatakyosui-c2lab to my agent?

Register the UtakataKyosui/C2Lab marketplace in Claude Code, then install only the plugins you need from the 31-plugin list per repo documentation.

Discussion

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