mcp server

io.github.cyanheads/reference-data-mcp-server

Countries, timezones, elements, constants, HTTP status codes, unit conversion, and MIME type lookup.

Description as published by the maintainer. Source

version 0.1.14
active

active — Most recent push to the repository was 2026-07-17.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Signal	Value	What it measures	Window	Observed	Source
GitHub stars	1	Number of GitHub accounts that bookmarked this repository since it was created. It is a bookmark count, not installs, not active users and not quality.	cumulative, all time	2026-08-06	GitHub
Last commit	2026-07-17	Date of the most recent push to any branch. This is the strongest cheap indicator of whether the project is still maintained.	point in time	2026-08-06	GitHub
Open issues	1	Open issues plus open pull requests, as GitHub counts them together. A high number can mean an active project or an abandoned one.	as of fetch	2026-08-06	GitHub
Latest published version	0.1.14	Latest version string the maintainer published to the registry.	as of fetch	2026-07-17	Model Context Protocol
Registry record last updated	2026-07-17	When the registry record was last updated by its maintainer.	point in time	2026-07-17	Model Context Protocol
License	Apache-2.0	Licence GitHub detected in the repository. Detection can be wrong; the LICENSE file is authoritative.	as of fetch	2026-08-06	GitHub
First listed in the MCP Registry	2026-07-17	Date this server was first published to the official MCP Registry. Not a usage or quality measure.	point in time	2026-07-17	Model Context Protocol
repository status	active	The repository exists on GitHub and is not archived. This says nothing about how recently it was worked on.	as of fetch	2026-08-06	GitHub

Where to get it

Related, by what their authors tagged them

com.imnoo/drawing-converter — last commit 2026-08-03, shares unit-conversion
Metric ⇄ imperial for technical drawings: dimensions, tolerances, ISO fits, threads, roughness.
com.apogeoapi/apogeoapi-mcp — last commit 2026-05-11, shares countries
Geographic data API: 250+ countries, 150K+ cities, IP geolocation, 161 live FX rates.
io.github.bamwor-dev/bamwor-mcp-server — last commit 2026-06-02, shares countries
World geographic data for AI agents: 261 countries, 5.2M cities, rankings, and 9 indexes.
io.github.cyanheads/census-mcp-server — last commit 2026-07-31, shares bun, stdio, streamable-http
Query U.S. Census Bureau data, variables, and geography via MCP.
io.github.cyanheads/finnhub-mcp-server — last commit 2026-07-30, shares bun, stdio, streamable-http
Real-time US-equity quotes, company fundamentals, earnings, analyst trends, and news via Finnhub.
io.github.cyanheads/guardian-mcp-server — last commit 2026-07-30, shares bun, stdio, streamable-http
Guardian Open Platform — search and retrieve full article text from The Guardian archive.
io.github.cyanheads/gutenberg-mcp-server — last commit 2026-07-11, shares bun, stdio, streamable-http
MCP server for Project Gutenberg — 75,000+ public-domain ebooks with full plain-text retrieval.
io.github.cyanheads/libofcongress-mcp-server — last commit 2026-07-30, shares bun, stdio, streamable-http
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io.github.cyanheads/protein-mcp-server — last commit 2026-07-30, shares bun, stdio, streamable-http
MCP Server for 3D protein structural data retrieval & analysis from RCSB PDB, PDBe, and UniProt.
io.github.cyanheads/ris-austria-mcp-server — last commit 2026-07-31, shares bun, stdio, streamable-http
Search Austrian federal and state law, court decisions, and the authentic Bundesgesetzblatt (RIS).

These share tags the maintainers applied themselves, such as unit-conversion, countries, bun, stdio. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.

This is not a recommendation and not a test result. It is a map of what the authors said their work is about.

Also from cyanheads

io.github.cyanheads/anime-mcp-server — last commit 2026-07-30
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io.github.cyanheads/arxiv-mcp-server — last commit 2026-07-27
Search arXiv, fetch paper metadata, and read full-text content.
io.github.cyanheads/astronomy-mcp-server — last commit 2026-07-31
Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.
io.github.cyanheads/attack-surface-mcp-server — last commit 2026-07-30
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io.github.cyanheads/aviation-weather-mcp-server — last commit 2026-07-30
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io.github.cyanheads/biorxiv-mcp-server — last commit 2026-07-11
Search and retrieve bioRxiv and medRxiv preprints — by DOI, date interval, or keyword — via MCP.
io.github.cyanheads/bls-labor-mcp-server — last commit 2026-07-17
Fetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via MCP.
io.github.cyanheads/bls-mcp-server — last commit 2026-07-17
Fetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via MCP.
io.github.cyanheads/bluesky-mcp-server — last commit 2026-07-31
Search posts, profiles, feeds, threads, and trending topics on Bluesky.
io.github.cyanheads/brapi-mcp-server — last commit 2026-07-16
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How the author describes it

Topics the maintainer set on GitHub: bun, countries, elements, http-status, mcp, mcp-server, mime-types, model-context-protocol, periodic-table, physical-constants, reference-data, stdio, streamable-http, timezones, typescript, unit-conversion.

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