[Plugin] ck.io / § 2.01
Frontend Design
Generates distinctive, production-grade frontend interfaces that avoid generic AI aesthetics.
ui · react · design · tailwind Read ›
installs 455.6k
Abstract
Curated tools for Claude Code, without the noise.
Plugins, MCPs, Skills, and Tools — organized by effect and use case.
A curation guide that organizes Claude Code extensions by effect and use case. We also cover new features and updates from Claude Code itself.
§ 1
Contents
last reviewed 2026-10-02 § 1.1 § 1.2 § 1.3 § 1.4 § 1.5 § 1.6 § 1.7 § 1.8
Development
Plugins and skills that strengthen writing, refactoring, testing, and debugging workflows. They align model output with the codebase’s own conventions.
View development tools →
Documentation
Tools that assist with writing, translation, summarization, and structure for Markdown, technical docs, and release notes.
View documentation tools →
Data Engineering
Data pipelines, SQL authoring, schema inference, and notebook integrations — context adapters for analytical work.
View data tools →
Design
Design system tokens, UI component generation, and design-to-code consistency. The model checks its own visual output.
View design tools →
DevOps
Deployment, infra-as-code, observability, and incident response — including MCPs that reach CI/CD logs and cloud APIs directly.
View devops tools →
Claude Code Utilities
Utilities that extend the CLI itself — status bars, keybindings, session management, history visualization.
View CLI utilities →
Productivity
Notes, task management, calendars, and document hubs. Entry points for personal workflows via Obsidian, Notion, Linear, and friends.
View productivity tools →
Communication
Integrations with messaging, email, and issue trackers. The model reads, summarizes, and replies in collaboration tools.
View communication tools →
§ 2
Featured tools
this issue · selected by editors [Plugin] ck.io / § 2.02
Superpowers
A complete software development methodology for your coding agents, built on composable skills that enforce TDD, systematic debugging, and plan-driven execution.
tdd · debugging · planning · code review Read ›
stars 151.6k · installs 355.7k
[MCP] ck.io / § 2.03
Atlassian
Official MCP server for Jira and Confluence. Query and update issues, manage Confluence pages, and stay in your editor instead of context-switching to the browser.
jira · confluence · project management · docs Read ›
stars 571 · installs 50.2k
[Skill] ck.io / § 2.04
Obsidian Skills
A collection of agent skills for reading and writing Obsidian-specific file formats — markdown, Canvas, Base — directly from Claude Code.
obsidian · markdown · notes · canvas Read ›
stars 23.8k
§ 3
Guides
recently published 6 min · Advanced
Context engineering for Claude 5 — the art of taking rules out
As models got better, adding more instructions started costing you. Here are the six shifts from Anthropic's experience removing over 80% of Claude Code's system prompt, plus three things to apply to your own CLAUDE.md and skills today.
6 min · Practical
Claude Code `/goal` — running auto-continuation safely
`/goal` sets a completion condition; after every turn a small fast model checks whether it holds and Claude keeps starting new turns until it does. The real lever is how the condition is written — most `/goal` problems are condition problems, not command problems.
7 min · Practical
Hidden Claude Code commands you actually want to use
Built-in slash commands that get buried even though they only need a single line to run — /radio, /btw, /teleport, /context, /copy, /loop and more, organized by when you'd reach for them.
§ 4
New features
shipped recently [01] [02] [03] [04] [05]
Customize Claude Code with mods · On October 1, 2026, Anthropic introduced mods for Claude Code: plugins made of JavaScript or TypeScript event handlers that can rewrite prompts, guard tool calls, and add panes and buttons to the interface. Mods require Claude Code v2.1.287 or later and work in the CLI and the Code tab of the Desktop app.
Claude Sonnet 5.5 · Anthropic introduced Claude Sonnet 5.5 on September 28, 2026, the second model in the Claude 5.5 family. It's a clear upgrade over Claude Sonnet 5, runs 30%+ faster, and costs up to 30% less for most work. It's priced the same as Sonnet 5 at $2 per million input tokens, $10 per million output tokens, and $0.20 per million tokens for cache reads, and the model ID is claude-sonnet-5-5. It scores 70.6% on Terminal-Bench 4.0, compared to Sonnet 5's 10.3%, and two points below Opus 5.5 on GDPval-AA.
Claude Marketplace: one place to discover plugins, agents, and services · On September 23, 2026, Anthropic launched Claude Marketplace, bringing plugins and connectors, agents and products, and service partners into one place. Choose from more than 2,000 connectors and plugins, and use a portion of your committed Anthropic spend on Claude-powered software from partners.
Claude Opus 5.5 · Anthropic introduced Claude Opus 5.5 on September 22, 2026, the first model in the new Claude 5.5 family. It performs at the level of Claude Fable 5.1 on most work and costs 40% less to run than Opus 5. Input and output tokens are $4 and $20 per million, 20% less than Opus 5, and cache reads are $0.20 per million tokens, 60% less. The model ID is claude-opus-5-5, and it generates output more than 30% faster than Opus 5. Five-hour usage limits are increasing on Pro, Max, Team, and seat-based Enterprise plans.
Projects redesigned: from folder to conversation · On September 17, 2026, Anthropic introduced a new experience for Claude projects, now available in beta in Claude Code. You describe what needs to get done and Claude manages the work: a coordinator directs threads, and each thread is a Claude Code cloud session working on its own branch and copy of the repo. Threads add to and draw from a shared memory, and a library collects the files you add and the artifacts Claude produces. It is rolling out first to select Claude Pro and Max subscribers who use cloud sessions, with updated projects across all of Claude and Team and Enterprise plans coming after that.
§ 5
Recent updates
compiled 2026-10-02 [01] [02] [03] [04] [05]
Claude Code 2.1.287 · Claude Mods lets plugins modify deeper behavior, and You should know arrives as a built-in mod where a side agent watches your back and flags things you or Claude might miss. Opus 4.7+ and Fable now use a 1M context window by default on Bedrock, Vertex and Foundry, and MCP `alwaysLoad: false` defers all of a server's tools behind tool search. Fixes focus on screen reader mode, file delivery in Remote Control and cloud sessions, MCP, and permission safeguards.
Claude Code 2.1.286 · The permission prompt now shows a count such as "2 of 5" when several requests stack up, and the "N more" rows of fullscreen lists respond to the mouse. Failed API requests now share one retry limit per model call (at most 14 requests by default), and `--bare` connects only the MCP servers named on the command line. Fixes focus on `--resume` losing turns, secret redaction in logs and transcripts, Remote Control, subagents and MCP connections.
Claude Code 2.1.285 · Adds `claude --desktop`, `claude plugin configure`, the `allowedProviders` managed setting and the `CLAUDE_CODE_DISABLE_WEB_FETCH` environment variable. Background Bash and PowerShell commands now stop after a time limit (default 30 min), and sessions behind a custom `ANTHROPIC_BASE_URL` use the 1M context window. Fixes focus on the Artifact tool, `/ultrareview` uploads, plugin installs, subagent permission modes and Remote Control.
Claude Code 2.1.284 · Claude Sonnet 5.5 (`claude-sonnet-5-5`) is added and is now the default Sonnet model on the Anthropic API. Interactive terminal and VS Code sessions start in auto mode when no permission mode is configured, on every plan and provider, and Ultracode becomes its own toggle in `/effort`. Fixes focus on damaged response streams, "Prompt is too long" after compacting, MCP connections and plugin permissions.
Claude Code 2.1.283 · New `availableModelsMatch` and `deniedModels` managed settings let organizations pin allowed models to exact versions and block specific models, and `/doctor prompt-audit` audits CLAUDE.md files, skills, agents and commands for prompting patterns written for older models. Fixes focus on MCP server reliability, `installed_plugins.json` handling and vim mode, and the 2.1.282 reservation of the `claude-ai` name is reverted.