Servers you connect to by URL — nothing to install. All 21 317 of them have a network address, which means their uptime can actually be measured: 17 648 answered our last handshake and 4 953 ask who you are first, most of them through a browser sign-in rather than a key. Checked every 15 minutes.
17 648 answering 4 953 ask who you are 95% on streamable-http 260 970 tools
Cumberland County GIS — Cumberland County, North Carolina open geospatial data (ArcGIS).
City of Cupertino GIS — Cupertino, California open geospatial data (ArcGIS).
City of Detroit GIS — Detroit, Michigan open geospatial data (ArcGIS).
City of Dublin GIS — Dublin, Ohio open geospatial data (ArcGIS).
Dukes County GIS — Dukes County, Massachusetts open geospatial data (ArcGIS).
East Baton Rouge GIS — East Baton Rouge Parish, Louisiana open geospatial data (ArcGIS).
Fairfax County GIS — Fairfax County, Virginia open geospatial data (ArcGIS).
City of Fairfield GIS — Fairfield, California open geospatial data (ArcGIS).
City of Falls Church GIS — Falls Church, Virginia open geospatial data (ArcGIS).
Fauquier County GIS — Fauquier County, Virginia open geospatial data (ArcGIS).
City of Flagstaff GIS — Flagstaff, Arizona open geospatial data (ArcGIS).
Glasgow City Council GIS — Glasgow, Scotland (UK) open geospatial data (ArcGIS).
Glynn County GIS — Glynn County, Georgia open geospatial data (ArcGIS).
Town of Grand Chute GIS — Grand Chute, Wisconsin open geospatial data (ArcGIS).
City of Greenwood GIS — Greenwood, Indiana open geospatial data (ArcGIS).
City of Houston GIS — Houston, Texas open geospatial data (ArcGIS).
ArcGIS Hub — open government geospatial data (search + Feature Service query).
Indian River County GIS — Indian River County, Florida open geospatial data (ArcGIS).
City of Irvine GIS — Irvine, California open geospatial data (ArcGIS).
City of Kinston GIS — Kinston, North Carolina open geospatial data (ArcGIS).
Lake County GIS — Lake County, Illinois open geospatial data (ArcGIS).
Lee County GIS — Lee County, Florida open geospatial data (ArcGIS).
Linn County GIS — Linn County, Iowa open geospatial data (ArcGIS).
City of Longview GIS — Longview, Texas open geospatial data (ArcGIS).
Lorain County GIS — Lorain County, Ohio open geospatial data (ArcGIS).
Loudoun County GIS — Loudoun County, Virginia open geospatial data (ArcGIS).
City of Lubbock GIS — Lubbock, Texas open geospatial data (ArcGIS).
City of Mobile GIS — Mobile, Alabama open geospatial data (ArcGIS).
Mono County GIS — Mono County & Mammoth Lakes, California open geospatial data (ArcGIS).
City of Peachtree Corners GIS — Peachtree Corners, Georgia open geospatial data (ArcGIS).
City of Peoria GIS — Peoria, Arizona open geospatial data (ArcGIS).
City of Phoenix GIS — Phoenix, Arizona open geospatial data (ArcGIS).
City of Pittsburgh GIS — Pittsburgh, Pennsylvania open geospatial data (ArcGIS).
Prince William County GIS — Prince William County, Virginia open geospatial data (ArcGIS).
City of Raleigh GIS — Raleigh, North Carolina open geospatial data (ArcGIS).
City of Roanoke GIS — Roanoke, Virginia open geospatial data (ArcGIS).
City of Salem GIS — Salem, Oregon open geospatial data (ArcGIS).
City of San Bernardino GIS — San Bernardino, California open geospatial data (ArcGIS).
San Joaquin County GIS — San Joaquin County, California open geospatial data (ArcGIS).
City of San Jose GIS — San Jose, California open geospatial data (ArcGIS).
San Juan County GIS — San Juan County, New Mexico open geospatial data (ArcGIS).
City of Sarasota GIS — Sarasota, Florida open geospatial data (ArcGIS).
Sarpy County GIS — Sarpy County, Nebraska open geospatial data (ArcGIS).
City of Seattle GIS — Seattle, Washington open geospatial data (ArcGIS).
City of Tampa GIS — Tampa, Florida open geospatial data (ArcGIS).
City of Tempe GIS — Tempe, Arizona open geospatial data (ArcGIS).
City of Tigard GIS — Tigard, Oregon open geospatial data (ArcGIS).
City of Toledo GIS — Toledo, Ohio open geospatial data (ArcGIS).
City of Tucson GIS — Tucson, Arizona open geospatial data (ArcGIS).
City of Victoria GIS — Victoria, BC (Canada) open geospatial data (ArcGIS).
Vilas County GIS — Vilas County, Wisconsin open geospatial data (ArcGIS).
Washington County GIS — Washington County, Minnesota open geospatial data (ArcGIS).
Minneapolis Institute of Art (Mia) collection MCP.
Kosovo Agency of Statistics (ASKdata) PxWeb MCP.
Statistics and Research Åland (ÅSUB) PxWeb MCP.
Banxico MCP — Banco de México (Mexico's central bank) via the SIE API.
Bhagavad Gita MCP — Hindu scripture / Vedic text.
Bible MCP — wraps the Bible API (free, no auth)
Bluesky MCP — wraps the AT Protocol API
Breweries MCP — Open Brewery DB API (free, no auth)
Deutsche Bundesbank (Germany's central bank) statistics MCP.
Business Feeds MCP.
Carbon Interface MCP — Carbon Interface API (v1)
CATAAS MCP — Cat as a Service (free, no auth)
CelesTrak MCP — satellite orbital elements (TLE / GP data) for any tracked object.
Color utilities MCP.
Color Pizza MCP — names hex colors using human-friendly color-name lists.
Committee Releases — documents congressional committees publish on their OWN
Congressional Documents — full-text search and retrieval over the official
Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth)
Crypto Feeds MCP.
Dad Jokes MCP — wraps icanhazdadjoke.com (free, no auth)
DataBaltimore MCP — Baltimore open data (data.baltimorecity.gov, ArcGIS REST API).
Brussels Open Data (opendata.bruxelles.be) — OpenDataSoft MCP.
DataCambridge MCP — Cambridge open data (data.cambridgema.gov, Socrata SODA API).
DataCincinnati MCP — Cincinnati open data (data.cincinnati-oh.gov, Socrata SODA API).
City of Chicago Socrata open-data portal
Cook County Open Data (datacatalog.cookcountyil.gov) Socrata MCP.
DataDallas MCP — Dallas open data (www.dallasopendata.com, Socrata SODA API).
Fulton County Open Data (sharefulton.fultoncountyga.gov) Socrata MCP.
Greece Open Data (data.gov.gr) CKAN MCP.
Howard County Open Data (opendata.howardcountymd.gov) Socrata MCP.
Île-de-France Open Data (data.iledefrance.fr) — OpenDataSoft MCP.
DataLA MCP — Los Angeles open data (data.lacity.org, Socrata SODA API).
Maryland state open data via Socrata SoQL — government, health, transport, budget, environment.
Michigan Open Data (data.michigan.gov) Socrata MCP.
DataMontreal MCP — City of Montreal open data (donnees.montreal.ca, CKAN API).
Netherlands Open Data (data.overheid.nl/data) CKAN MCP.
Norfolk Open Data (data.norfolk.gov) Socrata MCP.
Nova Scotia Open Data (data.novascotia.ca) Socrata MCP.
Orlando Open Data (data.cityoforlando.net) Socrata MCP.
Pennsylvania Open Data (data.pa.gov) Socrata MCP.
Pierce County Open Data (internal.open.piercecountywa.gov) Socrata MCP.
Rennes Métropole Open Data (data.rennesmetropole.fr) — OpenDataSoft MCP.
DataSeattle MCP — Seattle open data (data.seattle.gov, Socrata SODA API).
SNCF Open Data (ressources.data.sncf.com) — OpenDataSoft MCP.
Sonoma County Open Data (data.sonomacounty.ca.gov) Socrata MCP.
DataToronto MCP — City of Toronto open data (open.toronto.ca, CKAN API).
Toulouse Métropole Open Data (data.toulouse-metropole.fr) — OpenDataSoft MCP.
Tours Métropole Open Data (data.tours-metropole.fr) — OpenDataSoft MCP.
Vendors publish one server each. Stripe, Notion, Figma, Slack, Linear — one entry apiece, no competing copies.
What does produce dozens of entries under one name is hosting: 75 servers sit on
clauxel.com, 66 on alpic.live, most of them someone's staging
environment that ended up in the registry. They are listed here like everything else,
with whatever status they actually have.