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

Enables searching and retrieving public-transport feed metadata from MobilityData's open catalogue, including GTFS schedule and realtime feeds with operator URLs, licenses, and bounding boxes.

Enables AI agents to discover official public data sources, inspect their metadata and endpoint parameters, and execute live queries through a unified response envelope with a 500 ms budget.

Enables searching Google's Knowledge Graph for real-world entities via two tools: search by query or lookup by Machine ID, returning structured data including entity types, descriptions, and URLs.

Enables querying WAZ zone definitions, mapping ADIF DXCC entities and subdivisions to zone codes, searching zones by name or prefix, and checking zone validity with source citations. Runs locally without network access or authentication.

Provides free Chinese A-share stock data including real-time quotes, historical K-lines, market scanning, and multi-factor stock screening via BaoStock and Sina Finance APIs.

Enables interactive access to JAXA's satellite observation data (precipitation, land surface temperature, NDVI, elevation, soil moisture) via Claude, providing tools for point time series, dataset information, and area image generation.

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.

Provides current weather alerts for specified locations to AI assistants through the Model Context Protocol.

Enables querying WSPR beacon data including live spots, band activity, top beacons, propagation paths, and SNR trends through any MCP-compatible AI assistant.

Enables querying the 90 amateur ITU zones as the IARU publishes them, with each zone's ADIF DXCC and subdivision prefixes, boundary wording, and source citation, so users can find which zones cover a DXCC entity or subdivision, search zones by prefix or text, and check validity on a given date — all offline, without credentials.

Enables clients to look up DARC local-club DOK codes and special event DOKs — district, club, purpose, callsign and sponsoring club — and to check whether a code was valid on a given QSO date, or to search by club, town, district or purpose. Runs fully offline with no network or authentication, and every answer cites its published source.

Provides read-only query tools over OpenStreetMap data in PostGIS, enabling natural language queries for features, categories, and spatial analysis.

MCP server for querying the Central Bank of Brazil's 'Valores a Receber' (amounts to receive) service, providing read-only access to official data through natural language with a hosted server and prepaid credits.

Turns an LLM into a Maltego CE investigation copilot, enabling AI-assisted OSINT investigations by building, analyzing, and exporting Maltego graph files.

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.

This MCP is used to get realtime food data from OpenFoodFacts database. OpenFoodFacts is a largest food database in the world.

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 AI agents to search, fetch, and paginate a Disney character database, returning each character's film, short-film, TV-show, video-game and theme-park appearances along with allies, enemies and image URLs.

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.

Enables querying a global plant database with over 1 million species, providing access to plant records and species search via natural language.

Read-only MCP server that queries official Brazilian tax registration data from Receita Federal's Acréscimos Legais (SAL) system, paid per-use with prepaid credits.

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 Statistics Sweden's statistical database via tools like navigate, get_table_metadata, query_table, etc.

Provides access to the Open Brewery DB API, allowing AI assistants to search for breweries and retrieve detailed information like location, type, and contact details. It enables interactive exploration of a global database containing over 40,000 breweries.

Enables querying the Open Quantum Materials Database for DFT-computed inorganic materials by composition or constituent elements, with optional band-gap and thermodynamic-stability filters, and for retrieving a single material's formation energy, hull stability, band gap, space group, prototype and cell data by entry ID. Also lists the ground-state, on-hull phases of a given chemical system, all without an API key.

Enables querying a plant knowledge graph for companion planting, climate suitability, and landscape design recommendations via natural language.

Lets agents declare what data they need by concept plus entity (e.g. "price.close of Moutai"), then resolves those concepts to physical columns, ranks candidate sources, and fetches with failover. Over 70 tools also cover catalog and binding management, entity identity and graph, semantic and AI search, crawl policy and platform control, coverage reporting, schedules, authenticated-login pools, and governed observation reads.

Enables querying EPA's Air Quality System for regulatory-grade ambient air data, including parameters, sample measurements, annual summaries, and monitor metadata.

Provides access to a comprehensive food database with 300,000+ items, enabling nutritional data lookups, food searches, and barcode scanning with all processing happening locally for privacy and speed.

Enables AI agents to resolve marine species names to OBIS taxon records, retrieve georeferenced ocean occurrence records with optional date filtering, and pull aggregate statistics such as record counts, contributing datasets, and observed year ranges. Queries the Ocean Biodiversity Information System keylessly over the Pipeworx gateway or as a local stdio server.