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MCP.so is a third-party MCP Marketplace with 21913 MCP Servers collected.

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A

American Default Research

Read-only MCP for U.S. household financial distress data. Query 96 economic indicators (mortgage delinquency, unemployment claims, savings rate, credit conditions, foreclosure activity, and more), the American Distress Index (ADI) composite score, and county-level distress scores across all 3,144 U.S. counties. Data sourced from FRED, BLS, NY Fed, ATTOM, MBA, and other primary government and industry sources. Updated daily. Built by American Default Research — https://americandefault.org.

J

Justfix Estimator

Quote UK trades jobs (plumbing, electrical, locksmith and 10 more) from any MCP-compatible AI agent. Returns price breakdown + tappable booking link.

V

Vatnode

vatnode is an EU VAT validation API built for developers, SaaS platforms, fintech products, e-commerce, and ERP integrators selling B2B across Europe. Basic VAT APIs usually return only `valid: true`. vatnode returns a richer audit-ready validation record: VIES consultation number for qualified checks, `checkId`, `verifiedAt`, source authority, company data, and country VAT rate details in one REST response. Use it at checkout, before invoice generation, during B2B onboarding, or as part of recurring customer VAT monitoring. - EU VAT validation via REST JSON - VIES consultation number for qualified checks - `checkId` + `verifiedAt` audit trail fields - National registry fallback and enrichment for covered countries - Local VAT name, abbreviation, currency, and rate tiers - Cached responses under 50ms; live checks typically 200–800ms - Optional VAT monitoring and webhook alerts on paid plans - EU-hosted in Germany - Test keys for deterministic CI/CD - Free tier, no credit card Built for teams that need more than a boolean VAT result — they need validation evidence they can store with invoices and customer records.

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FAQ

Frequently Asked Questions about MCP Server

1

What is MCP (Model Context Protocol)?

MCP is an open-source protocol developed by Anthropic that enables AI systems like Claude to securely connect with various data sources. It provides a universal standard for AI assistants to access external data, tools, and prompts through a client-server architecture.

2

What is MCP Server?

MCP Server is a system that provides context, tools, and prompts to AI clients. It can expose data sources like files, documents, databases, and API integrations, allowing AI assistants to access real-time information in a secure way.

3

How do MCP Server work?

MCP Server work through a simple client-server architecture. They expose data and tools through a standardized protocol, maintaining secure 1:1 connections with clients inside host applications like Claude Desktop.

4

What can MCP Server provide?

MCP Server can share resources (files, docs, data), expose tools (API integrations, actions), and provide prompts (templated interactions). They control their own resources and maintain clear system boundaries for security.

5

How does Claude use MCP?

Claude can connect to MCP server to access external data sources and tools, enhancing its capabilities with real-time information. Currently, this works with local MCP servers, with enterprise remote server support coming soon.

6

Is MCP Server secure?

Yes, security is built into the MCP protocol. Server controls its own resources, there's no need to share API keys with LLM providers, and the system maintains clear boundaries. Each server manages its own authentication and access control.

7

What is mcp.so?

mcp.so is a community-driven platform that collects and organizes third-party MCP Servers. It serves as a central directory where users can discover, share, and learn about various MCP Servers available for AI applications.

8

How can I submit my MCP Server to mcp.so?

You can submit your MCP Server by creating a new issue in our GitHub repository. Click the 'Submit' button in the navigation bar or visit our GitHub issues page directly. Please provide details about your server including its name, description, features, and connection information.

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