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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

Filter further

Entries 3,451 to 3,500 of 36,126

Entries
CalDAV calendarsio.github.ni-c/caldav-mcp
Calafai.calaf/calaf
Calaf Seed Toolsai.calaf/seeds
Calc Evalio.github.sadri-dridi/calc-eval
Calcgridcom.tttkmbb/calcgrid
CalculPro — outils de calcul du bâtimentfr.calculpro/outils-batiment
Calculadora Jurídicaio.github.mcp-dir/calculo-mcp
Calculate.co.nz NZ Calculatorsnz.co.calculate/calculator
Calculatorio.github.slettmayer/calc-mcp-server
Calculator Tools MCPtools.calculator/mcp
Calcupediaio.calcupedia/calcupedia
Calcurisio.github.tresor4k/calcuris-mcp
Calendar Agent by Nova (CIVAI)co.civai.nova/calendar-agent
Calendar Handoff Readerio.github.Wxt-ai/calendar-handoff-reader
Calendar Handoff Readerio.github.Wxt-ai/calendar-coordination-entry-complete
Calendar Handoff Readerio.github.Wxt-ai/calendar-coordination-entry-identifier
Calendar quarter 1-4 bandio.github.sadri-dridi/qtr-n
Calendar.appio.github.p-l-ta/calendar-mcp
Calendlyio.github.pipeworx-io/calendly
Calensynclive.calensync/calensync
Cali Elangdellio.github.pipeworx-io/cali-elangdell
Calibration Explorerio.github.m-sanchez/calibration-explorer
Calibrd Agentcom.calibrd/agent
Calibre-Webio.github.ni-c/calibreweb-mcp
California Bitcoinorg.californiabitcoin/agent-commerce
California C-10 Contractor Checkio.github.impanyu/contractor-check
California Codeio.github.pipeworx-io/california-code
California Court Deadlinescom.calcourtdeadlines/deadlines
California Dog Bite Evidence Checklist | JSM Injury Firmio.github.janoliverautomation-stack/caldogbiteevidence-com
California Insurancecom.californiacarquotes/insurance
California Jury Instructionsio.github.pipeworx-io/california-jury-instructions
California Justice Watchcom.cajusticewatch/cajusticewatch
California Slip & Fall Evidence Checker | JSM Injury Firmio.github.janoliverautomation-stack/caslipandfall-com
California Tax Appealsio.github.pipeworx-io/california-tax-appeals
Californiacarquotescom.californiacarquotes/quote-exchange
Caliperfit.caliper/caliper
Call Copilotio.github.AnisurRahmann/call-copilot
Call Mecom.serdaroztetik/call-me
Call Mecom.callmemcp/call-me
Call2Meapp.call2me/mcp
CallChatSyncom.callchatsyn/callchatsyn
CallFlow AIio.github.sarvin-tech/callflow-ai
CallForMetel.callforme/callforme
CallKaro Voice AI Operationsio.github.jatinsm2023/callkaro-mcp
Callboardfm.callboard/connector
Callendarco.callendar/mcp
Calligraphy Maker by Studio99app.studio99/calligraphy
Callirraio.github.callirra-ai/mcp
Callosiumio.github.callosium/callosium
Callstay Hotelscom.callstay/hotels

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=70