"An overview of knowledge graphs" matching MCP servers:

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.

Read-only MCP server for the July 2026 survey of AI in open-source design systems, enabling agents to query 19 systems' affordances, coercion techniques, and platform data via 9 tools, 2 resources, and 2 prompts.

MCP server that fetches ServiceNow Community events for a date range and returns them as structured data, optionally writing a CSV. No login or credentials required.

MCP server for LINDAS, the linked-data knowledge graph of the Swiss administration, enabling querying of Swiss public data cubes via guarded SPARQL tools.

Per-unit cost of 13 back-office tasks done by a person vs by software, in the US, Greece and Ukraine, with an official statistic behind every hourly wage. Bundled data, works offline.

Search and collect data from the National Assembly Library of Korea's OpenAPI (21 DB types) and export to xlsx/csv/json/sqlite.

An MCP server that searches grant opportunities across multiple CommonGrants-compliant APIs from a single set of tools.

One-call Australian health and welfare data plumbing via AIHW — cited responses for practical analysis, not a data broker.

A read-only FastMCP server for academic research that lets agents search papers, inspect metadata, follow citation graphs, generate BibTeX, and read full texts of open-access PDFs via semantic scholar, OpenAlex, arXiv, DBLP, and Crossref.

Provides access to Victoria, Australia's public holidays and important dates via an MCP server.

Provides npm/PyPI package intelligence including health scores, vulnerabilities, dependency graphs, and download counts via an MCP server, with optional pay-per-call access over x402 for advanced health and batch endpoints.

Enables AI assistants to search, explore, and query any CKAN open data portal through natural language, making public datasets accessible without requiring knowledge of the portal's API.

MCP server that enables AI chatbots to search, explore, and obtain download links for datasets from the Republic of Azerbaijan's Open Data Portal (opendata.az).

Gives AI agents read access to ads running across Meta platforms without an API key, returning full creatives, real landing URLs, and complete platform lists.

Provides AI agents access to OpenStreetMap's comprehensive tagging knowledge base, enabling tag queries, preset discovery, and validation of OSM tags for mapping applications.

Provides live access to Canadian economic data via the Bank of Canada's Valet API, including exchange rates, policy interest rates, CPI, bond yields, and commodity prices.

A money-in-politics knowledge graph, as an MCP server. It links entities across federal campaign donations, lobbying disclosures, and government contracts.

Enables an AI client to search Australian federal and South Australian government open data catalogues, inspect a dataset file's schema and sample rows, then run read-only SQL over the full file in a sandboxed DuckDB. Every answer carries the source URL, publisher and licence, with extra tools for ABN checksum validation and Australian financial-year dates.

An MCP server that provides knowledge about Coordinate Reference Systems (CRS).

Enables AI agents to access Brazilian statistical, geographic, and economic data in real-time via IBGE public APIs.