Tools

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.

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.

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).

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.

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.

Describe what you need and get a typeset PDF: turn handwritten notes or scanned textbooks into LaTeX handouts and cheat sheets, make exams with answer keys, write papers, theses, posters, resumes and letters. 27 templates plus chart and mail-merge scripts. Needs TeX Live (install script included).

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.

Product management library with 68 skills across discovery, definition, development, delivery, measurement and iteration: hypotheses, PRDs, user stories, OKRs, experiment design and design sprints, plus 200+ sample outputs and chainable workflows. Also installs as a Claude Code plugin.

Skills distilled from 15 startup and marketing classics such as The Lean Startup, The Mom Test and Crossing the Chasm, for customer interviews, positioning, pricing, sales and acquisition. A diagnostic skill helps pick the right framework. Just ask once installed.

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.

Rewrites a paper for a target journal: give it 5-8 papers from that journal (plus optional field or lab examples), it builds an editable style guide for your manuscript, then rewrites section by section to the journal's conventions with a change log. PDF input needs a converter such as MinerU.

dbt Labs' official plugin marketplace with dbt and dbt-migration plugins: write models and unit tests, build semantic-layer metrics, govern with dbt Mesh, debug failed jobs, and handle version upgrades and cross-platform migrations. Most skills need an existing dbt project.

dbt Labs' official skills: write and edit dbt models, add unit tests and docs, set up the MetricFlow semantic layer, debug failed jobs, and handle dbt version upgrades and cross-platform migrations. Most skills need dbt installed and an existing project.

A research plugin for Claude Code: commands like /omp:survey, /omp:experiment and /omp:write chain literature review, topic selection, experiments, writing and self-review, with 5 specialized agents and 34 research skills that remember project progress across sessions. Experiments lean toward ML.

21 English writing rules (12 from The Elements of Style, Orwell, Pinker and other classics, 9 from observed LLM habits) for clearer, leaner papers, grant proposals, design docs and documentation. Expository English only; not for fiction or marketing copy.

Open-source marketing toolkit with 78 skills for SEO audits, blog and landing-page copy, email sequences, social posting, ad campaigns and competitor analysis. Basic use needs no keys; pulling data from Semrush, GA4 or HubSpot, or publishing automatically, needs the matching API keys.

Stock analysis MCP for individual investors: quotes via yfinance, technical indicators such as RSI and MACD, screening strategies, a portfolio tracker and a trade journal. Core tools need no API key; backtesting and deep-research extensions are optional.

Economics writing skill built on 50+ guides (Cochrane, McCloskey and others): shapes abstracts, introductions and conclusions by paper type and 13 identification strategies such as DiD, IV and RDD, simulates three referee scores and flags citations to verify.

Two skills for before and after peer review: review-revision checks a manuscript as a senior reviewer would and plans section-by-section revisions; rebuttal-response triages reviewer comments, plans extra evidence and drafts point-by-point replies. Takes PDF, LaTeX, Word or Markdown.

The five-agent PaperOrchestra pipeline (outline, figures, literature review, section writing, polishing) as skills: turns research ideas, experiment logs and a conference template into a LaTeX paper and checks citations via Semantic Scholar. Needs Python; verify the draft yourself.

Helps agents write geospatial SQL for PostGIS, DuckDB, BigQuery and Snowflake: inspect schemas and keep query costs in check, then render results as interactive maps to review and correct. Needs Python and your own database or warehouse; maps use Dekart, which can run locally in Docker.