Remote MCP Servers
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: 17 429 answered our last handshake and 4 938 ask who you are first, most of them through a browser sign-in rather than a key. Checked every 15 minutes.
17 429 answering 4 938 ask who you are 95% on streamable-http 261 192 tools
MAC address shape, value discarded
mailto: shape, address discarded
Makefile target count, body discarded
Markdown heading count, body discarded
Whether current UTC hour is weekday NYSE window
Maven POM coordinate shape, body discarded
Megabytes to gigabytes
Markdown heading count, text discarded
MD5 hex, input discarded
RFC 6838 media type shape
GET is allowed
POST is allowed on MCP
Meters to feet, number discarded
Public MIME token for csv.
Public MIME token for jpeg.
Public MIME token for markdown.
text/markdown marker
Public MIME token for mp3.
Public MIME token for mp4.
Public MIME token for octet.
Public MIME token for pdf.
Public MIME token for plain.
Public MIME token for png.
Public MIME token for svg.
Public MIME token for toml.
Public MIME token for wav.
Public MIME token for webm.
Public MIME token for webp.
Public MIME token for xml.
Public MIME token for yaml.
Minutes to seconds
Whether a is inside [min,max], numbers discarded
Matroska EBML check, file discarded
Milliliters to teaspoons
n modulo m, numbers discarded
Days in the current UTC month
UTC start of the current month
Coarse moon phase from UTC day
MP3 frame sync check, file discarded
Miles per hour to km/h
UTC milliseconds remainder
MessagePack marker count, body discarded
Murmur hash hex length, input discarded
MurmurHash hex, input discarded
Nano ID length, value discarded
URL-safe Nano ID charset
NDJSON line count, bodies discarded
NDJSON shape check, body discarded
LF vs CRLF vs CR, text discarded
Dutch postcode shape, value discarded
Nautical miles to kilometers
Mongo ObjectId hex length, value discarded
Mongo ObjectId shape
OCI image reference shape, name discarded
UTC offset shape like +02:00
Open Graph meta count, markup discarded
Open Graph tag count, markup discarded
Ogg magic-byte check, file discarded
OpenAPI version key shape, body discarded
ORC magic-byte check, file discarded
ORCID shape, id discarded
UTC ISO ordinal date
Origin scheme+host shape, URL discarded
Origin header shape, value discarded
Ounces to grams
Pascals to bar
package.json key count, values discarded
Paragraph count, text discarded
Parquet magic-byte check, file discarded
Parquet magic-byte check, file discarded
POSIX path shape, path discarded
PDF magic-byte check, file discarded
PEM fence check, key discarded
PEM fence shape, key discarded
PEP 621 project name shape, body discarded
Percent-decode length, input discarded
a as percent of b, numbers discarded
Percent-encode triplet count, input discarded
PGP armor fence check, key discarded
plist key count, values discarded
Open Location Code shape, value discarded
PubMed id shape, value discarded
PNG magic-byte check, file discarded
Whether 110 is a common TCP/UDP port.
Whether 143 is a common TCP/UDP port.
Whether 20 is a common TCP/UDP port.
Whether 21 is a common TCP/UDP port.
Whether 23 is a common TCP/UDP port.
Whether 25 is a common TCP/UDP port.
Whether 27017 is a common TCP/UDP port.
Whether 3306 is a common TCP/UDP port.
Whether 465 is a common TCP/UDP port.
Whether 53 is a common TCP/UDP port.
Whether 5432 is a common TCP/UDP port.
Whether 587 is a common TCP/UDP port.
Whether 6379 is a common TCP/UDP port.
Whether 8080 is a common TCP/UDP port.
Whether 8443 is a common TCP/UDP port.
Whether 993 is a common TCP/UDP port.
Whether 995 is a common TCP/UDP port.
Why this list is short on names you know
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.