"Free Network Graph Visualization Tools (No Account Required)" matching MCP servers:

MCP server for Statistics Norway (SSB) PxWebApi, enabling table metadata queries via a single tool.

Access Norway's official business register (Brønnøysund Register Centre) via MCP, enabling queries and integration with AI agents.

Provides access to the Norwegian Parliament's open data via Stortinget's API, enabling querying of parliamentary information through natural language.

MCP server for querying the SEC Ownership Graph, providing curated read-only tools to analyze activist campaigns, control chains, and board interlocks from SEC filings. Answers cite accession numbers and abstain when data is insufficient.

Provides access to 529,000+ US statute sections across all 50 states and federal codes for comprehensive legal research. Supports semantic search, citation graph traversal, jurisdictional comparisons, and regulatory risk analysis through natural language queries.

Enables trademark clearance and research across EU and Benelux registers, plus company, group-structure, and EU VAT lookups, all through free public sources without API keys.

Enables MCP-compatible AI clients to look up UK postcode details, find nearest postcodes by coordinates, and retrieve upcoming bank holidays through keyless public APIs.

Provides access to SEC EDGAR 13F institutional holdings, Form 4 insider trading, and smart money convergence signals for AI agents via the Model Context Protocol.

MCP server for Brazilian data lookups (Pix codes, CEP, CNPJ) and web rendering tasks (Markdown, screenshots, PDFs) via a paid HTTP API with x402 billing.

LA County ADU buildability checks, zoning rules, permit trends, and cost estimates — free, no auth.

An MCP server that enables interaction with Google's Fact Check Tools API, allowing users to query and manage fact-check claims and publishers through natural language commands.

Paid MCP server for EU tools: validate VAT numbers via VIES and get ECB euro FX rates, with per-call USDC payments on Base via the x402 protocol.

An MCP server that provides a tool to query Brazilian postal codes (CEPs) via the ViaCEP API, returning address details such as street, neighborhood, city, and state.

European financial data for AI agents — ECB interest rates, Eurostat inflation, GDP and unemployment by country. Zero API key needed.

An MCP server for U.S. public-records data, enabling AI agents to search business registrations, screen names against government watchlists, and pull federal awards.

국가보훈부 공훈전자사료관의 독립유공자 공훈록 및 공적조서를 Claude Desktop에서 조회할 수 있는 Model Context Protocol 서버입니다.

Enables MCP clients to search verified Japanese corporate records — EDINET XBRL financials, 13-digit corporate numbers, major shareholders, and gBizINFO certifications — locally through a single knowledge-search tool with keyword, fuzzy, semantic, or hybrid retrieval. It also maps J-GAAP, US GAAP, and IFRS concepts so filings can be read in English without mistranslating terms like 営業利益 and 経常利益.

Provides access to official MeteoSwiss weather data, including regional reports, daily forecasts, and website search functionality across multiple languages. It enables AI assistants to retrieve real-time weather information and documentation from MeteoSwiss using the Model Context Protocol.

Access data on every NIH-funded research project. Free and no authentication required.

Free Polish VAT invoice generation MCP server with PDF output and preview. No API key required.