MCP Server List
Every MCP server in the official registry that has something to show: 34 729 in total, of which 18 281 answered our last handshake and 3 230 are listed as active but do not respond. Sorted by uptime, real installs and the number of tools each one exposes — not by date added.
New to this? What an MCP server is, and what all 34 729 of them expose — written from our own handshakes, not from the specification.
18 281 answering 12 426 with real installs 265 339 tools indexed
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.
TCP/UDP port range
UK postcode shape, value discarded
Integer power band, numbers discarded
Pragma token charset, value discarded
Protobuf field-tag count, body discarded
Protobuf wire-type scan, body discarded
PSI to bar, number discarded
PSI to kilopascals
Public suffix count
Punycode host shape, value discarded
Punycode length, input discarded
Firebase push-id charset, value discarded
Firebase PushID shape
pyproject.toml table count, body discarded
UTC start of the current quarter
Query pair count, URL discarded
Quoted-printable length, input discarded
RFC 2047 encoded-word shape, input discarded
Quoted-printable length, text discarded
8 random hex chars
Range header shape
a/b ratio shape, numbers discarded
Redirect hop count band 0-5
Regex compile check, pattern discarded
yesterday/today/tomorrow from a UTC date
requirements.txt name count, versions discarded
Whether an HTTP status is retryable
RFC number shape
RFC section number shape
HTTP status class 1xx-5xx
RIPEMD hex length, input discarded
robots.txt Allow count, body discarded
ROT13 encode, input discarded
Decimal-place count for a number
RSS feed shape, body discarded
RTF header check, body discarded
SCREAMING_SNAKE charset, value discarded
sdbm hex, input discarded
Seconds to minutes
SemVer shape
SemVer range operators, value discarded
Sentence count, text discarded
SHA-3 hex length, input discarded
SHA-512 hex length, input discarded
Shebang interpreter token, line discarded
Short-UUID charset, value discarded
SipHash hex length, input discarded
Sitemap URL count, body discarded
Slack channel name shape, value discarded
snake_case shape, text discarded
SNI hostname shape, value discarded
Snowflake id shape
Snowflake timestamp bits, id discarded
SPDX license expression tokens, value discarded
SPDX license id shape
SPKI prefix check, key discarded
SpookyHash hex length, input discarded
Integer square-root band, number discarded
Square-bracket id shape, value discarded
SSH fingerprint hex shape, value discarded
SSH FP record shape, value discarded
USPS state code AK.
USPS state code AL.
USPS state code AR.
USPS state code AZ.
USPS state code CA.
USPS state code CO.
USPS state code CT.
USPS state code DC.
USPS state code DE.
USPS state code FL.
USPS state code GA.
USPS state code HI.
USPS state code IA.
USPS state code ID.
USPS state code IL.
USPS state code IN.
USPS state code KS.
USPS state code KY.
USPS state code LA.
USPS state code MA.
USPS state code MD.