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MCP servers without declared required secrets

MCP servers for which the registry lists neither an environment variable nor a header marked secret and required. Measured from the raw manifest values.

36,126 servers 86% of 42,239 in the directory

This category in numbers

The most frequent value per property, counted across the entries of this category. The full distribution is further down.

Entries

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Entries 28,901 to 28,950 of 36,126

Entries
nonprofit-explorer-mcp-server in namespace io.githubio.github.cyanheads/nonprofit-explorer-mcp-server
npi-providers-mcp-server in namespace io.githubio.github.cyanheads/npi-providers-mcp-server
ntfy-mcp-server in namespace io.githubio.github.cyanheads/ntfy-mcp-server
nws-weather-mcp-server in namespace io.githubio.github.cyanheads/nws-weather-mcp-server
obsidian-mcp-server in namespace io.githubio.github.cyanheads/obsidian-mcp-server
oecd-mcp-server in namespace io.githubio.github.cyanheads/oecd-mcp-server
oeis-mcp-server in namespace io.githubio.github.cyanheads/oeis-mcp-server
onebusaway-mcp-server in namespace io.githubio.github.cyanheads/onebusaway-mcp-server
open-meteo-mcp-server in namespace io.githubio.github.cyanheads/open-meteo-mcp-server
openalex-mcp-server in namespace io.githubio.github.cyanheads/openalex-mcp-server
openfda-mcp-server in namespace io.githubio.github.cyanheads/openfda-mcp-server
openfec-mcp-server in namespace io.githubio.github.cyanheads/openfec-mcp-server
openfoodfacts-mcp-server in namespace io.githubio.github.cyanheads/openfoodfacts-mcp-server
openlibrary-mcp-server in namespace io.githubio.github.cyanheads/openlibrary-mcp-server
openstates-mcp-server in namespace io.githubio.github.cyanheads/openstates-mcp-server
openstreetmap-mcp-server in namespace io.githubio.github.cyanheads/openstreetmap-mcp-server
orcid-mcp-server in namespace io.githubio.github.cyanheads/orcid-mcp-server
osv-advisory-mcp-server in namespace io.githubio.github.cyanheads/osv-advisory-mcp-server
ourairports-mcp-server in namespace io.githubio.github.cyanheads/ourairports-mcp-server
paleobiology-mcp-server in namespace io.githubio.github.cyanheads/paleobiology-mcp-server
pentest-mcp-server in namespace io.githubio.github.cyanheads/pentest-mcp-server
pixoo-mcp-server in namespace io.githubio.github.cyanheads/pixoo-mcp-server
pokeapi-mcp-server in namespace io.githubio.github.cyanheads/pokeapi-mcp-server
protein-mcp-server in namespace io.githubio.github.cyanheads/protein-mcp-server
pubchem-mcp-server in namespace io.githubio.github.cyanheads/pubchem-mcp-server
pubmed-mcp-server in namespace io.githubio.github.cyanheads/pubmed-mcp-server
reference-data-mcp-server in namespace io.githubio.github.cyanheads/reference-data-mcp-server
reliefweb-mcp-server in namespace io.githubio.github.cyanheads/reliefweb-mcp-server
ris-austria-mcp-server in namespace io.githubio.github.cyanheads/ris-austria-mcp-server
sanctions-screening-mcp-server in namespace io.githubio.github.cyanheads/sanctions-screening-mcp-server
secedgar-mcp-server in namespace io.githubio.github.cyanheads/secedgar-mcp-server
seerr-mcp-server in namespace io.githubio.github.cyanheads/seerr-mcp-server
shift-mcp-server in namespace io.githubio.github.cyanheads/shift-mcp-server
smithsonian-mcp-server in namespace io.githubio.github.cyanheads/smithsonian-mcp-server
socrata-mcp-server in namespace io.githubio.github.cyanheads/socrata-mcp-server
sports-mcp-server in namespace io.githubio.github.cyanheads/sports-mcp-server
stackexchange-mcp-server in namespace io.githubio.github.cyanheads/stackexchange-mcp-server
survey-mcp-server in namespace io.githubio.github.cyanheads/survey-mcp-server
toolkit-mcp-server in namespace io.githubio.github.cyanheads/toolkit-mcp-server
treasury-fiscaldata-mcp-server in namespace io.githubio.github.cyanheads/treasury-fiscaldata-mcp-server
tvmaze-mcp-server in namespace io.githubio.github.cyanheads/tvmaze-mcp-server
uk-legislation-mcp-server in namespace io.githubio.github.cyanheads/uk-legislation-mcp-server
uk-police-crime-mcp-server in namespace io.githubio.github.cyanheads/uk-police-crime-mcp-server
un-comtrade-mcp-server in namespace io.githubio.github.cyanheads/un-comtrade-mcp-server
unhcr-refugees-mcp-server in namespace io.githubio.github.cyanheads/unhcr-refugees-mcp-server
uniprot-mcp-server in namespace io.githubio.github.cyanheads/uniprot-mcp-server
usaspending-mcp-server in namespace io.githubio.github.cyanheads/usaspending-mcp-server
usda-mcp-server in namespace io.githubio.github.cyanheads/usda-mcp-server
usgs-water-mcp-server in namespace io.githubio.github.cyanheads/usgs-water-mcp-server
uspto-mcp-server in namespace io.githubio.github.cyanheads/uspto-mcp-server

All 36,126 entries in the list, with filters and pagination

What this category selects

What this category selects
Required secrets declaredno
derived from: Required secret variables (raw)

A derived value carries its original data beside it; the derivation rule is published, with a version, on the methodology page.

Caveats, distribution and query

What this category does not say

  • Required secrets declared is not declared but computed: from Required secret variables (raw), Required secret headers (raw). The rule is published, with a version, on the methodology page.

What is measured is what a manifest declares, not what a piece of software does. This registry fetches no repository URL, no endpoint and no package index; nothing here is verified. Which value comes from which source, and by which rule it was formed, is set out in the Methodology.

Every sentence here follows from the condition above, not from an assessment.

How this category is distributed

Delivery form (raw)

36,102
Delivery form (raw)
remote22,617 63 %
package11,719 32 %
package and remote1,272 3.5 %
neither494 1.4 %

not recorded for 24 entries

Execution location

36,126
Execution location
remote22,823 63 %
local13,303 37 %

Repository platform (raw)

36,102
Repository platform (raw)
github25,446 70 %
nothing declared10,578 29 %
gitlab78 0.2 %

not recorded for 24 entries

Repository URL listed

36,126
Repository URL listed
yes25,541 71 %
no10,585 29 %

Icon formats (raw)

36,102
Icon formats (raw)
nothing declared32,486 90 %
image/png2,216 6.1 %
image/png, image/svg+xml728 2.0 %
image/svg+xml594 1.6 %
image/webp40 0.1 %
image/jpeg29 0.1 %

and 6 more values · not recorded for 24 entries

Schema version of the raw record (raw)

36,102
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json33,604 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json1,282 3.5 %
https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json535 1.5 %
https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json527 1.5 %
https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json145 0.4 %
https://static.modelcontextprotocol.org/schemas/2025-12-11/server.schema.json3 0.0 %

and 5 more values · not recorded for 24 entries

Per property, the measured values inside this category. The share refers to the 36,126 entries of the category, not to the registry. Shown are 6 of 7 properties: those whose values spread the most inside this category.

The same category through the interface

curl -s "https://api.tracevero.com/v1/eintraege?art=mcp_server&zugangsdaten_erforderlich=false&grenze=200"

The command carries exactly the condition of this page. 36,126 entries at 200 each are 181 requests; the total is in the X-Gesamt header.

Changes to these entries

https://tracevero.com/aenderungen.atom?thema=ohne-zugangsdaten

Both addresses narrow the change stream to exactly the entries in this category. The feed carries an identifier of its own, so a feed reader keeps it apart from the full stream.

Categories sharing entries with this one

MCP servers without declared environment variables 33,944 entries in this category31,685 shared MCP servers with a repository URL 30,309 entries in this category25,541 shared MCP servers without a declared package registry 25,337 entries in this category23,126 shared Remotely executed MCP servers 25,096 entries in this category22,823 shared MCP servers over streamable-http only 23,859 entries in this category21,706 shared Local MCP servers without declared required secrets 13,303 entries in this category13,303 shared

Per neighbour its own size and the counted number of shared entries. A category without a single shared entry is not listed here.

tracevero · https://tracevero.com/themen/ohne-zugangsdaten?seite=579