"A graph database management system: Neo4j" matching MCP servers:

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.

Provides real-time access to Israeli emergency alerts from the official Pikud Haoref (Home Front Command) API. Enables AI assistants to check current alerts, retrieve alert history with intelligent city filtering, and monitor emergency notifications including rocket alerts, aerial intrusions, and earthquakes.

Finds companies registered at JUCESP from a partner's name, CPF, or CNPJ, returning the NIRE of each participation. It is a read-only MCP server hosted at api.mcp.ai.

Enables searching and fetching GOV.UK Design System guidance via locally-crawled SQLite FTS5 data, with tools like search, fetch, and version.

Provides access to EPA's Air Quality System API with 31 tools for querying air quality data, monitoring sites, and pollution measurements across the United States through natural language.

MCP server for GLEIF LEI (Legal Entity Identifier) database access. Look up, validate, and search legal entities and their relationships in the global LEI system.

Enables AI agents to search, retrieve, and analyze vulnerability data from the NIST National Vulnerability Database through a comprehensive Model Context Protocol server.

Enables natural language queries for Georgian tax system waybills through the RS.ge SOAP API. Supports waybill retrieval by date range, company TIN lookups, and access to tax system dictionaries.

A Model Context Protocol server that enables conversational searching of NIH-funded research projects and publications through the NIH RePORTER database.

Enables querying of China Historical Geographic Information System (CHGIS) database for historical place names, administrative divisions, and geographical data from 222 BCE to 1911 CE. Supports searching by place ID, name, year, administrative type, and retrieving historical context and hierarchical relationships.

MCP server for the EZD PUW electronic document management system of Polish public administration, providing 91 tools covering the full API for documents, cases, correspondence, ePUAP, eDelivery, blockchain, and more.

Enables AI agents to query the IRS 990 nonprofit database and OpenRegs federal regulations database via SQL, providing access to nonprofit filings, grants, lobbying, and congressional data.

Enables querying Sweden's municipal and regional key-performance-indicator (KPI) database, providing access to a wide range of public sector metrics via natural language.

Verifiable German, Austrian, Swiss and EU law: resolve citations to the wording in force, verify the citations a model produced against the official source, and walk the citation graph.

MCP server for querying the CPOM official system from São Paulo city hall, providing a read-only tool for natural language consultations via any MCP-compatible client.

Emits simplified company certificates from JUCESP (Brazilian state registry) via CNPJ, NIRE, or name. Read-only, hosted MCP server with pay-per-use credit system.

This MCP server enables querying the professional registration of engineers and agronomists in Brazil's CONFEA/CREA system using CPF and national registration number, with a single read-only tool.

Enables querying a summary of credit operations for individuals or companies in the Brazilian Central Bank's Credit Information System (SCR), read-only via MCP.

Enables querying the Regional Dental Council of Rio Grande do Sul (Brazil) professional registration database through a read-only MCP tool. Works with any MCP client via HTTP with prepaid credits.