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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.

36,559 servers 86% of 42,727 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

Filter further

Entries 4,001 to 4,050 of 36,559

Entries
Churn Solutioncom.churnsolution/analytics
ChurnLensio.github.kindrat86/churnlens
Ciceros to millimeters, number discardedio.github.sadri-dridi/cicero-mm
Cidadão MG Veículos: Transferência de Propriedade de Veículoio.github.mcp-dir/cidadao_mg_veiculos_trans_prop-mcp
CielStaycom.cielstay/cielstay
CigarFinderio.github.Cigarfinder/cigarfinder
Cigo Aircare & Carsafeio.github.cigo240920/cigo-aircare
Cin7 Core MCP by usefulapiio.usefulapi/cin7-core
CinderRoute Agent Exchangedev.cinderroute/agentic-ci-operations
Cinevva Game Creatorcom.cinevva/game-creator
Cintra Supply Quote Deskcom.cintrasupply/cintra-quote
CipherHUB Cryptography Toolkitio.github.bowenerchen/cipherhub
Circl Vulnerability Lookupio.github.pipeworx-io/circl-vulnerability-lookup
Circuitfamily.circuit/marketplace
CircuitAgentio.github.mo9652962-ai/circuit-agent-client
Circuitarium MCPio.github.Craftiee/circuitarium
Ciro Cesar Maciel — Free Toolsclick.ciromaciel/tools
Cirra AI Salesforce Admin MCP Serverai.cirra/salesforce-mcp
Cisa Kevio.github.pipeworx-io/cisa-kev
Citableio.github.zaialamm/citable-mcp
Citation Checkio.github.ninefiveonefive/citation-check
Citation Checkio.github.SecondStageTurbine/citation-check
Citation Checkerapp.openkrill/citations
Citation Intelligenceio.github.AutomateLab-tech/citation-intelligence
Citation Safe Verifiercom.citationsafe/verifier
Citation Style Language locale shape, body discardedio.github.sadri-dridi/csl-ok
Citation Verificationio.github.guptaprakhariitr/verification-mcp
Cite Caddydk.herbertkokholm.citecaddy/cite-caddy
Cite Filescom.citefiles/citefiles
CiteGuardio.github.lonexreb/retractguard
CiteHawkcom.citehawk/citehawk
CiteMeapp.citeme/citeme
CiteNexusio.github.akougkas/cite-nexus-mcp
CiteStampcom.citestamp/citestamp
CiteVahtiio.github.heidihelena/citevahti
CiteWireio.github.Openly-Useful/citewire
Citead GEO Scorecom.citead/score
Citedio.github.entradox/cited-visibility-scanner
Cited AI Visibility Checkio.github.impowerdlifestyle-code/cited-mcp
Citeerbaarnl.citeerbaar/mcp
Citelycom.aicitely/citely
Citevana AI visibility toolscom.citevana/mcp
Citewrendev.workers.cybermax-tools.cybermax/citewren
Cities2 MCP and Modding Toolkitio.github.mayor-modder/cities2-mcp
Citiwiseio.github.tejasdgurav/citiwise
Cito by Prostackuk.prostack/cito
Citraio.github.SylphxAI/citra
City24.ee - Real Estate marketplaceee.city24/real-estate
City24.lv - Real Estate marketplacelv.city24/real-estate
CityAlertlive.cityalert/cityalert

All 36,559 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)

36,535
Delivery form (raw)
remote22,960 63 %
package11,801 32 %
package and remote1,277 3.5 %
neither497 1.4 %

not recorded for 24 entries

Execution location

36,559
Execution location
remote23,166 63 %
local13,393 37 %

Repository platform (raw)

36,535
Repository platform (raw)
github25,671 70 %
nothing declared10,786 30 %
gitlab78 0.2 %

not recorded for 24 entries

Repository URL listed

36,559
Repository URL listed
yes25,766 70 %
no10,793 30 %

Icon formats (raw)

36,535
Icon formats (raw)
nothing declared32,746 90 %
image/png2,288 6.3 %
image/png, image/svg+xml819 2.2 %
image/svg+xml604 1.7 %
image/webp40 0.1 %
image/jpeg29 0.1 %

and 6 more values · not recorded for 24 entries

Schema version of the raw record (raw)

36,535
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json34,025 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json1,289 3.5 %
https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json536 1.5 %
https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json531 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 36,559 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. 36,559 entries at 200 each are 183 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 34,377 entries in this category32,082 shared MCP servers with a repository URL 30,564 entries in this category25,766 shared MCP servers without a declared package registry 25,719 entries in this category23,472 shared Remotely executed MCP servers 25,476 entries in this category23,166 shared MCP servers over streamable-http only 24,232 entries in this category22,042 shared Local MCP servers without declared required secrets 13,393 entries in this category13,393 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=81