Tools

Lets agents create pixel art and frame animations in Aseprite: drawing, layers, palettes, dithering, outlines and onion-skin previews, with PNG, GIF and sprite sheet export, for game art and pixel illustration. Needs Aseprite, Python 3.13 and uv; runs from source.

Plotting skills for academic papers: bar, line, scatter, radar and other styles distilled from 9 real paper figures. Plot your own data in a chosen style as 300 dpi figures, or reproduce a matplotlib script from a paper screenshot. Needs local Python and matplotlib.

Open-source plugin for agencies and brand teams: 163 skills and 24 specialist agents follow a 12-stage strategy flow to produce positioning, growth plans, multichannel campaigns, content, ad copy and reports, with claims and compliance checks before publishing. Multi-brand; uses many tokens.

Companion skill to the User Interface Wiki: 152 rules in 12 categories, from motion, easing and exit animations to UI sounds, interaction laws, prefetching and typography, for writing or reviewing web UI code, with issues listed by file:line. Needs an existing web project and Node.js to install.

250+ human-reviewed legal skills from practicing lawyers, in-house counsel and academics, mostly US and EU law: compliance, GDPR, legal research, litigation, contract review and drafting, the EU AI Act. Install all or pick one; output is a draft for a lawyer to review.

Jina AI's official remote MCP: converts web pages and PDFs to Markdown, searches the web, arXiv, SSRN and images, and offers screenshots, reranking and semantic dedup. Reading tools work without a key (rate-limited); search and rerank need a Jina API key.

Runs SQL queries against ClickHouse and browses databases and table schemas, read-only by default; can also enable embedded chDB to query data directly in files and URLs. Maintained by ClickHouse.

Google Fonts' official font compiler: builds OTF, TTF or variable fonts from Glyphs, UFO or designspace sources, and with -i interpolates each weight from the source's export settings, so type designers can let agents produce builds. Needs Python 3.10+ and font source files.

Lets agents browse subreddits, search posts, read comments and analyze user activity, useful for customer sentiment, competitor feedback and market research. Browsing needs no account; search and comments need free Reddit app credentials. Requires Node.js.

Drives desktop Excel on Windows: refresh Power Query, build pivot tables and charts, evaluate DAX and run VBA while keeping existing formulas and formatting, so finance and admin staff can automate existing reports. Needs Windows, Excel 2016+ and Node.js; no macOS.

Lets agents drive a local Adobe After Effects: create compositions, add text, shape, solid and camera layers, and set keyframes and expressions, for batch intros, lower thirds and motion graphics. Needs After Effects 2022+ and Node.js; build from source and open the bridge panel in AE.

Lets agents drive a local Photoshop: remove backgrounds, retouch portraits, color grade, batch-watermark, and export or split carousels at social media sizes; multi-step edits undo in one step. Needs Photoshop and Node.js 18+. Unofficial; sends anonymous telemetry by default (opt-out).

Brand-building skills: start with a brand profile, then work on strategy, naming, visual identity briefs, voice and key messages, positioning and competitor brand analysis, brand audits and launch plans, plus Meta/Google ads, email and influencer playbooks. No API key needed.

Lays out a finished Markdown long-form post in the X (Twitter) Articles editor: title, bold, links, cover and inline images, with tables and Mermaid diagrams turned into images. Saves a draft only, never publishes. Needs X Premium Plus, Playwright MCP and Python (macOS/Windows).

Two parts: an API server on Kali Linux and an MCP bridge, letting agents run nmap, sqlmap, Metasploit, Hydra and other tools, or arbitrary terminal commands, for authorized penetration testing and CTFs. Available in Kali's official repositories.

From the X (Twitter) developer platform: a FastMCP server that turns the X API into tools to post, search posts and users, and manage DMs and lists, with an allowlist for which tools load. Needs X developer app credentials and a locally started Python server.

50+ skills for Amazon sellers: product and keyword research, listings and A+ copy, PPC, FBA fees and profit, and tariff estimates. Free, no API key; a few skills run bundled scripts on public Amazon data and need Python. Tariff and compliance output needs professional review.

Distilled Apple Human Interface Guidelines reference for iOS, iPadOS, macOS, tvOS, visionOS and watchOS, loading the right rules, component specs and measurements per task. Includes a /duo workflow for adapting an iOS app to iPhone Duo and an opt-in enforce mode with independent review.

Unofficial Yahoo Finance data tool with a yahoo-finance CLI, an MCP server and an agent skill: stock quotes, price history, financials, option chains and analyst ratings. Needs Node.js 22+, no API key. The API is unofficial and may change; for research only.

Calls image and video models such as FLUX, Veo and Seedance through inference.sh's belt CLI to generate images, video, avatars and voiceovers, plus guides for thumbnails, storyboards, press releases and social copy. Needs belt and a free inference.sh account; model calls are billed per use.

Official from LINE: connects to a LINE Official Account through the Messaging API to push or broadcast text and Flex messages, manage rich menus, and look up followers and user profiles. Needs a channel access token; currently in preview.

The Docling project's official MCP: converts PDF, Word, PowerPoint and more into structured documents with layout and table detection and OCR for scans, and lets agents build new documents paragraph by paragraph and export Markdown. Local mode needs Python and uv, or use your own Docling Serve.

Unbabel's machine-translation quality metric: comet-score rates translations per sentence and overall, XCOMET marks error spans and severity, and CometKiwi works without a reference. Good for spot-checking MT. Needs Python 3.8+; models download from Hugging Face, some need a license; GPU helps.

Enter a URL and get a single-page SEO audit report in HTML: checks title and meta description, H1, robots, sitemap, structured data and more, and lists priority fixes. Needs local Python; the full audit also needs a Google PageSpeed API key.