Tools

Official ElevenLabs skills: text to speech, speech to text, sound effects and music generation, voice changing, vocal isolation, multilingual dubbing and building voice agents. Needs an ElevenLabs API key.

Todoist's official MCP: lets agents find, create, update and complete tasks and projects and view to-dos by date. Use the hosted remote server with OAuth sign-in, or embed it as a tool library in your own AI app.

Searches Airbnb listings and fetches details: filter by location, dates, guests, price and property type, and get amenities, house rules, location and direct links. No API key; runs locally via npx and respects robots.txt by default.

MCP server for the Lean 4 theorem prover: lets agents read proof goals, diagnostics and definitions and search theorems via LeanSearch and Loogle, helping mathematicians and students with formal proofs. Needs uv and the Lean toolchain; run it from the Lean project root.

68 trading and quant skills focused on crypto and DeFi: market and on-chain data, technical indicators, backtesting, position sizing and risk, prediction markets, and tax tools for cost basis and wash sales. Most need Python and data API keys (often free tiers); get expert review.

Official MCP and skills from freee, Japan's cloud accounting service: accounting, invoices, HR and payroll, timesheets, fixed assets and tax filings. Remote server with freee OAuth recommended; freee Sign e-contracts are local-only for now. Have an accountant check results.

Contract review skill built on the 41 risk categories of the CUAD dataset, covering NDAs, SaaS and M&A deals: rates risk from your side's position, benchmarks terms against market norms for negotiating room, and proposes drop-in redlines. Install by git cloning into your skills folder.

Notion's official Claude Code plugin: bundles Notion's hosted MCP with four Cookbook skills (knowledge capture, meeting prep, research write-ups, spec to implementation) and slash commands for searching, creating pages, querying databases and creating tasks. OAuth sign-in.

Official Tavily skills: let agents search the web, extract page content, discover site URLs, crawl in bulk and run cited deep research through the Tavily CLI (tvly). Install the CLI first; search and extract have a limited no-login tier, other features need sign-in or an API key.

MCP for an open-source tax guide library: when answering income tax, VAT and payroll tax questions, agents cite up-to-date guides covering 200+ jurisdictions, some reviewed by named licensed accountants. Hosted, no install. Reference only; check with an accountant before filing.

Open-source accounting for Swedish sole traders and limited companies: 150+ MCP tools let AI categorize bank transactions, draft entries, reconcile and prepare VAT, payroll and year-end filings, all writes needing your approval. Hosted (OAuth) or self-hosted; accountant review advised.

Product decision skills built on the Advanced JTBD method: market and segment research, value propositions, PRDs, launch copy and growth plans, and customer interview analysis. Install into your project with the repo's one-line script; outputs are hypotheses to test, not conclusions.

Astronomer's official data engineering plugin: write Airflow DAGs to best practices, debug pipeline failures, trace data lineage, profile warehouse tables and migrate from Airflow 2 to 3, with a built-in Airflow MCP server and session hooks.

Research guardrails for PhD students: reproduce arXiv papers, debug training anomalies with evidence, compare runs at matched epochs, check paper-code consistency, verify BibTeX, find literature gaps and predict reviewer comments. No MCP or extra dependencies; mostly for ML research.

Zapier's official plugin: connects 9,000+ apps through the hosted Zapier MCP so you can send email, book meetings, update sheets, create tickets and trigger workflows in plain language. Includes onboarding and health-check skills. Needs a Zapier account.

Manages Outlook mail, calendar, folders and inbox rules through Microsoft Graph, uploads, searches and shares OneDrive files, and can trigger Power Automate flows. Register an Azure app for a client ID and secret, clone and run it with Node.js, and sign in via the auth server on first use.

Lets agents read and write QuickBooks Online customers, invoices, bills, journal entries and more, and generate balance sheets, P&L and cash flow reports. Official from Intuit; register a developer app for OAuth, then build from source and run locally.

Anthropic's official skill for US prior auth review: checks records, provider credentials and codes, weighs medical necessity against Medicare policy, recommends approve, deny or pend and drafts the letter. Needs the healthcare plugin's CMS, NPI and ICD-10 connectors; clinicians confirm.

Anthropic's official healthcare plugin for the US system: extract data from clinical notes, assign ICD-10 and CPT/HCPCS codes, review prior auths, screen for fraud and draft trial protocols, with hosted CMS, NPI and PubMed connectors. FHIR access needs API rights; clinicians must review.

Anthropic's official skill that reads outpatient notes like a medical coder, decides which diagnoses to report and assigns billable ICD-10-CM codes as specific as the record allows, verified via the ICD-10 connector in the healthcare plugin. US outpatient; certified coder review required.

MCP module of MintHCM, an open-source self-hosted HR system: lets agents query, count and edit employee, recruiting, onboarding, offboarding, attendance, leave and performance records and run reports, keeping data on your server. Deploy MintHCM first; sign in via browser on first connect.

monday.com's official CRM plugin: build a sales pipeline from scratch in plain language, get a daily prioritized deal brief, create forecast dashboards, turn meeting notes into deal updates, and bulk-clean duplicate and bad data. Free plan supported; browser authorization on first use.

monday.com's official MCP: lets agents read and write boards, items, groups and columns, create forms, and call the full API through a dynamic GraphQL tool. The hosted server with OAuth is recommended; running locally needs an API token.

Drafts an employee handbook for small firms without dedicated HR: interviews the owner on actual practice, then writes plain-language attendance, leave, pay, conduct and anti-harassment policies, flagging clauses to check against local law. Based on US state rules; needs employment lawyer review.