"author:AiAgentKarl" matching MCP servers:

Enables AI agents to discover, register, and rate services in a decentralized agent-to-agent directory.

Enables AI agents to search products, lookup barcodes, and manage shopping carts and wishlists using free e-commerce APIs.

MCP server for EU company and business data. 9 tools: company search (GLEIF, 2M+ entities), LEI lookup, corporate structures (parent/subsidiaries), trade register search, EU VAT validation (VIES), GDP, unemployment, inflation, and business demography (Eurostat). All APIs free, no keys required.

MCP server for agriculture and farming data. 8 tools: soil conditions (temperature, moisture), crop weather forecasts, historical climate data (NASA POWER, since 1981), global agriculture statistics (World Bank, 20+ indicators), and food product database (Open Food Facts, 3M+ products). All APIs free, no keys required.

Provides AI agents with access to US patent data through 16 tools for search, citation analysis, technology trends, and portfolio comparisons via the free USPTO PatentsView API.

MCP server giving AI agents access to global supply chain and trade data from UN Comtrade, World Bank, and Open Supply Hub.

Enables AI agents to render interactive user interfaces such as forms, dashboards, charts, tables, and wizards directly in MCP-compatible clients. Supports structured data collection and richer interactions beyond text responses.

Enables AI agents to perform comprehensive web accessibility checks (WCAG 2.1/2.2) including color contrast analysis, ARIA validation, and full accessibility report generation without requiring any API key.

Enables AI agents to search and explore over 570,000 artworks from the Metropolitan Museum of Art and Art Institute of Chicago without needing an API key.

MCP server providing AI agents with access to German government open data. 12 tools across 6 categories: Autobahn traffic, DWD weather, NINA disaster warnings, SMARD energy market, Bundestag parliamentary data, and pollen forecasts. All APIs are free, no keys required.

MCP Server providing AI agents access to over 3 million US court decisions via CourtListener and EU legislation via EUR-Lex, with tools for searching cases, citations, judges, and court information.

MCP server for enterprise authentication and authorization — JWT validation, OIDC token inspection, OAuth 2.0 introspection, and role-based access control for AI agents.

MCP server for shared context caching with trust verification -- AI agents share and verify computed results to reduce token cost and increase reliability.

Klarna-style product discovery for AI shopping agents. Makes product catalogs machine-readable so AI agents can search, compare, and purchase products programmatically.

Enables agents to report and query performance metrics to build a community-driven quality database for MCP tools. This server helps agents discover and select the most reliable tools based on success rates and user-reported quality scores.

An open-source MCP server for AI-powered fraud prevention that detects fraudulent IPs, emails, URLs, and phone numbers using free APIs and provides actionable risk scores.

Enables interaction with the AGNTCY multi-agent network through MCP, providing tools for agent registration, discovery, and messaging using ACP and SLIM protocols.

Enables AI agents to fetch and search news from multiple sources including RSS/Atom feeds, HackerNews, and GDELT global news intelligence without requiring an API key.

MCP server giving AI agents access to Solana blockchain data. 7 tools: wallet balances, transaction history, token prices (Jupiter + CoinGecko), token metadata, DeFi yields (Raydium + Orca), and token safety checks (RugCheck scores, holder concentration, insider detection).

Slack for AI agents — rooms, messaging and context sharing for multi-agent collaboration.