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Leroy Jenkins
Leroy Jenkins

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I counted the MCP registry: 101,219 entries are 31,309 servers, and 23% have no source repo

Every "how many MCP servers exist" number I could find counts registry entries. The official Model Context Protocol registry keeps every historical version of every server, so the entry count and the server count are different things. I pulled all of it and did the arithmetic.

Method

  • Source: the public registry API, every record by cursor pagination, on 14 September 2026.
  • Deduplication: one record per server name, keeping the latest version.
  • Hosts: parsed from the declared remote URLs.
  • Metadata only. I never connected to a server, so "declares an HTTPS endpoint" is not the same as "up" or "safe".

The numbers

Figure Value
Raw registry entries 101,219
Distinct servers (latest version per name) 31,309
Entries that are superseded versions 69% (3.23x inflation)
Servers with no source repository 7,090 (22.6%)
Remote-only servers with no repository 6,484 (20.7%)
Remote / package / both / neither 18,984 / 13,427 / 1,516 / 414
Servers sharing a hostname with 50+ others 5,460 (17.4%)
Top three hosts combined 4,525 servers (14.5% of everything)
Distinct publishers 18,500
Publishers with exactly one server 16,594 (89.7%)
Marked deprecated 334
New servers first seen, Sep 2025 456
New servers first seen, Aug 2026 6,673

What this means if you are choosing servers for an agent

Version inflation. Any count of registry entries overstates the ecosystem by 3.2x. If a directory, a benchmark or a pitch deck says "100k MCP servers", it counted versions.

Auditability. One server in five is remote-only with no repository. There is no code to read; the only way to find out what it does is to connect to it. If your policy is "review before you allow", a fifth of the registry is unreviewable by construction.

Concentration. 17.4% of servers share a hostname with at least fifty others, and three hosts front 14.5% of the entire registry. Some of that is legitimate gateways. Some looks like bulk registration. Either way, "which host is this really talking to" is a better question than "which publisher is listed".

Growth. New servers per month went from 456 to 6,673 in a year. Whatever review process you have today will not scale to next year's registry by hand.

Check a server before you trust it

I refresh the census monthly and will post the deltas. Corrections and questions about method are welcome in the comments.

Top comments (1)

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Jo Do

The 69%-superseded inflation explains every bloated "MCP ecosystem" headline I have seen. The 22.6% with no source repo is the number that should worry people more than it does: an agent pointed at a remote-only server with no repository is trusting a hostname with a tool list. Also appreciated the "metadata only, never connected" method note - counting without touching is the right way to run this census.