Tools

Email marketing skill: audits your setup, builds welcome, abandoned-cart and other flows from a brief, writes in your brand voice, diagnoses spam issues and checks GDPR compliance before sending, plus 19 industry playbooks. Klaviyo or Mailchimp control needs an MCP; get compliance reviewed.

Official MCP for Plane, the open-source project management tool: lets agents read and manage projects, work items, cycles, modules and releases, with PQL queries. Use the hosted server with OAuth, or run locally via uvx with an API key; works with self-hosted Plane.

Leads a visible, verified code walkthrough in Neovim: confirms real behavior by running code, then authors one immutable Navi tour with short notes the viewer steps through, optionally recorded with OBS. Requires Terminal Control (termctrl), Neovim 0.10+ and navi.nvim.

Opinionated guide to production TypeScript with Effect v4: Effect.gen workflows, Context.Service and Layer services, Schema models and typed errors, Config, Schedule retries, Cache, Stream, HttpClient and deterministic tests, plus patterns to avoid. Requires Effect v4.

Railway's official plugin, bundling the use-railway skill and hosted Railway MCP so agents can create projects, deploy services, set environment variables and databases, and check logs and metrics to debug deployments. Needs a Railway account.

Has the agent use the @sveltejs/mcp CLI via npx whenever it creates, edits or analyzes Svelte components or modules: list and fetch Svelte 5 and SvelteKit docs sections, and run svelte-autofixer to catch issues and validate every component before finishing. Official Svelte skill.

ComfyUI's official MCP: lets agents drive local ComfyUI image and video workflows, list installed nodes, models and templates, submit jobs and fetch results, and start or stop ComfyUI. Needs a machine that can run ComfyUI (usually a GPU) and comfy-cli; partner models consume Comfy credits.

Vercel's official plugin: a knowledge graph of the Vercel ecosystem, dozens of skills, expert subagents for deployment and performance, and commands for deploys, env vars and project status, covering Next.js, the AI SDK, storage and CI/CD. Needs Node.js 18+ and Bun; telemetry is opt-out.

QuantConnect's official CLI drives the open-source LEAN engine locally or in the cloud to download data, backtest and optimize quant strategies and deploy them live. Requires a paid-tier QuantConnect organization; strategies in Python or C#; local runs need Docker. Get expert review.

Postman's official MCP server: lets agents manage workspaces, collections, environments and API specs, help with API testing and generate client code from API definitions. The remote version uses OAuth; the local version needs a Postman API key.

Official Readwise skills: triage your Reader queue, skim feeds, quiz you on what you just read, and draft book reviews and reading recaps from your highlights. Needs a Readwise subscription (30-day free trial) and the Readwise MCP or CLI installed first.

Cross-platform UI automation skills built on Midscene.js visual recognition: control browsers, desktops, Android, iOS and HarmonyOS devices in natural language, and set up Vitest + Midscene E2E tests. Bring your own vision model API key; maintained by the Midscene team.

Hugging Face's official MCP server: lets agents search models, datasets and Spaces on the Hub and call thousands of Gradio AI apps directly. Hosted remotely; sign in with your Hugging Face account or authorize with a token.

Grafana Labs' official skills: dashboards and alerting, PromQL, Loki, Tempo, Mimir and Pyroscope queries, Prometheus cardinality troubleshooting, Grafana Cloud management and cost optimization, k6 load testing and plugin development. Some skills need Grafana Cloud.

Rewrites prose to remove 41 AI-writing patterns, from significance inflation and promotional tone to em dashes and chatbot artifacts, using a draft, audit, final loop that never invents facts. Can match a writing sample, edit files in place, or audit a whole docs folder for slop.

Lets agents search Wikipedia and read full articles, summaries, specific sections and related articles, useful for lesson prep, homework help and fact-checking. English Wikipedia by default; pass --language to use another edition. No account; needs uv (Python).

Detects 55 AI-writing patterns and rewrites text in one of five voices (casual, professional, technical, warm, blunt), with an optional 0-100 AI-tell score. Offers detect, rewrite and in-place Markdown edit modes and never invents facts. Pure Markdown, no dependencies or network calls.

Alibaba Cloud's official agent skills: ECS diagnosis and DR, RDS/PolarDB database checks, PAI training and EAS deployment, ACK clusters, RAM permissions, OSS and network troubleshooting, and Model Studio. Needs an AccessKey or aliyun CLI credentials.

Turns Markdown outlines into interactive mind map HTML and can export PNG, JPG or SVG server-side (requires Playwright). Runs fully locally with no third-party API key; good for organizing notes, lesson prep and document structure.

Model by conversation in open-source FreeCAD: create primitives and sketches, extrude and chamfer, run Booleans, export STEP/STL, and write and debug macros. Install and start the Robust MCP Bridge workbench from the FreeCAD Addon Manager, then pip-install the server (Python 3.11).

Firecrawl's official plugin: brings the Firecrawl CLI in as skills so Claude Code can search the web, scrape pages to Markdown, map site links or crawl whole sites. Install firecrawl-cli and set an API key first; self-hosting supported.

Renders a screen reader spec for a component directly in Figma: focus order plus per-state VoiceOver (iOS), TalkBack (Android) and ARIA (Web) property tables and announcements. Part of uSpec; reads the component .md spec from create-component-md and needs a Figma MCP and a configured template key.

i18next's official CLI: finds hard-coded strings in JS/TS code, extracts translation keys, checks which locales are missing entries and syncs locale files; init --yes sets up non-interactively, and a bundled agent skill guides app internationalization. Needs a Node.js project using i18next.

Nulab's official Backlog MCP: lets agents manage Backlog projects, issues and comments, milestones and wikis, and view Git repositories and pull requests. Needs your Backlog space URL and a personal API key, plus Node.js or Docker.