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MCP servers without declared environment variables

The manifest explicitly declares no environment variable. That is the empty value of a piece of original data, not "not recorded".

33,944 servers 80% 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 3,401 to 3,450 of 33,944

Entries
Caixa Econômica Federal MCPio.github.mcp-dir/caixa-mcp
Caixa Tem MCPio.github.mcp-dir/caixatem-mcp
Caktoio.github.mcp-dir/cakto-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
CalendarMCPai.calendarmcp/server
Calendlyio.github.pipeworx-io/calendly
Calensynclive.calensync/calensync
Calera FINSEC — Certified SEC Memoryio.github.CaseyYahbara/finsec
Calfeedai.calfeed/calfeed
Cali Elangdellio.github.pipeworx-io/cali-elangdell
Calibration Explorerio.github.m-sanchez/calibration-explorer
Calibrd Agentcom.calibrd/agent
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 For Meio.github.kimjin8/call-for-me
Call Mecom.serdaroztetik/call-me
Call Mecom.callmemcp/call-me
Call Score: AI Call Review & QA for Receptionists and Salesio.github.Nero-Engine/call-score
Call2Meapp.call2me/mcp
CallChatSyncom.callchatsyn/callchatsyn
CallFlow AIio.github.sarvin-tech/callflow-ai
CallForMetel.callforme/callforme
CallKaro Voice AI Operationsio.github.jatinsm2023/callkaro-mcp

All 33,944 entries in the list, with filters and pagination

What this category selects

What this category selects
Environment variables (raw)nothing declared
measured directly

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

  • Environment variables (raw) is the complete, sorted enumeration of what a manifest declares. So "nothing declared" means exactly that and nothing else: an entry that also declares something different is not in this category.
  • The empty value means "the source explicitly declares nothing here". It does not mean "not recorded": what was never recorded is in no category of this property.

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

Repository platform (raw)

33,926
Repository platform (raw)
github22,333 66 %
nothing declared11,520 34 %
gitlab73 0.2 %

not recorded for 18 entries

Repository URL listed

33,944
Repository URL listed
yes22,417 66 %
no11,527 34 %

Delivery form (raw)

33,926
Delivery form (raw)
remote24,828 73 %
package7,873 23 %
package and remote731 2.2 %
neither494 1.5 %

not recorded for 18 entries

Execution location

33,944
Execution location
remote24,979 74 %
local8,965 26 %

Icon formats (raw)

33,926
Icon formats (raw)
nothing declared30,197 89 %
image/png2,274 6.7 %
image/png, image/svg+xml722 2.1 %
image/svg+xml645 1.9 %
image/webp47 0.1 %
image/jpeg31 0.1 %

and 6 more values · not recorded for 18 entries

Schema version of the raw record (raw)

33,926
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json31,535 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json1,266 3.7 %
https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json495 1.5 %
https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json490 1.4 %
https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json132 0.4 %
https://static.modelcontextprotocol.org/schemas/2025-12-11/server.schema.json3 0.0 %

and 5 more values · not recorded for 18 entries

Per property, the measured values inside this category. The share refers to the 33,944 entries of the category, not to the registry. Shown are 6 of 8 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&roh_umgebungsvariablen=&grenze=200"

The command carries exactly the condition of this page. 33,944 entries at 200 each are 170 requests; the total is in the X-Gesamt header.

Changes to these entries

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

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 required secrets 36,126 entries in this category31,685 shared MCP servers without a declared package registry 25,337 entries in this category25,337 shared Remotely executed MCP servers 25,096 entries in this category24,979 shared MCP servers over streamable-http only 23,859 entries in this category23,758 shared MCP servers with a repository URL 30,309 entries in this category22,417 shared Remote MCP servers with a repository URL 14,077 entries in this category13,971 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-umgebungsvariablen?seite=69