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: 17 585 answered our last handshake and 4 949 ask who you are first, most of them through a browser sign-in rather than a key. Checked every 15 minutes.
17 585 answering 4 949 ask who you are 95% on streamable-http 261 064 tools
Base64 encode, input discarded
Weekday vs weekend
Celsius to Fahrenheit
Public ISO 3166-1 record for US.
CSS hex color shape
Email shape, address discarded
Unix epoch milliseconds
ISO 4217 currency EUR.
ISO 4217 currency USD.
16 hex chars
Hex color to RGB
Meaning of HTTP 200.
Meaning of HTTP 401.
Meaning of HTTP 404.
Meaning of HTTP 429.
Meaning of HTTP 500.
IPv4 or IPv6, address discarded
ISBN digit shape
ISO ordinal day
ISO week number
JSON validity
JWT header shape, payload discarded
Kilometers to miles
ISO 639 language tag en.
Leap year check
application/json marker
Nano ID shape check
E.164 shape, number discarded
Whether 443 is a common TCP/UDP port.
Punycode host check
16 random hex chars
RFC 3339 UTC stamp
SemVer numbers only
SHA-256, input discarded
Slug character check
Current local time in America/Los_Angeles.
Current local time in America/New_York.
Current local time in Asia/Shanghai.
Current local time in Asia/Tokyo.
Current local time in Australia/Sydney.
Current local time in Europe/Paris.
ULID shape check
Unix epoch seconds
URL host only
Mint a random UUID v4.
UUID shape check
UTC weekday name
Word count, text discarded
UTC year
Read, edit and generate AI microdrama scripts, shots, characters and video in Squall Studio
Byte count, text discarded
Public ISO 3166-1 record for BR.
Public ISO 3166-1 record for DE.
Public ISO 3166-1 record for FR.
Public ISO 3166-1 record for GB.
Public ISO 3166-1 record for IN.
Public ISO 3166-1 record for JP.
Character count, text discarded
Fahrenheit to Celsius
Hex encode, input discarded
UTC hour
Meaning of HTTP 204.
Meaning of HTTP 301.
Meaning of HTTP 302.
Meaning of HTTP 403.
Meaning of HTTP 503.
ISO 8601 duration shape
JSON byte count, body discarded
ISO 639 language tag ar.
ISO 639 language tag de.
ISO 639 language tag es.
ISO 639 language tag fr.
ISO 639 language tag hi.
ISO 639 language tag it.
ISO 639 language tag ja.
ISO 639 language tag ko.
ISO 639 language tag nl.
ISO 639 language tag pt.
ISO 639 language tag ru.
ISO 639 language tag zh.
Miles to kilometers
UTC month name
SHA-1, input discarded
Current local time in America/Chicago.
Current local time in America/Denver.
Current local time in Asia/Hong_Kong.
Current local time in Asia/Singapore.
Current local time in Europe/Amsterdam.
Current local time in Europe/Berlin.
Current local time in Europe/London.
Current local time in Europe/Madrid.
Current local time in Pacific/Auckland.
Current local time in UTC.
URL origin only
URL path only
UTC weekday 1-7
The Open House: a locker, a verifier, a fair coin, a job board, and rooms that give nothing back.
Check an arXiv id shape.
Base64url encode, input discarded
BCP 47 language tag shape
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.