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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".

34,377 servers 80% 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 12,151 to 12,200 of 34,377

Entries
Machine Relations Indexai.machinerelations/mri
MachineWitnesseu.machinewitness/archive
Macro & Commodities Deskcom.predictionmarketspicks/commodities
Macro Snapshotio.github.pipeworx-io/macro-snapshot
MacroCyberco.macrocyber/attack-surface
MacroViewcom.macro-view/macroview
Macrostratio.github.pipeworx-io/macrostrat
Macula meshio.macula/macula-mcp
Macvendorsio.github.pipeworx-io/macvendors
Madario.github.mohanagy/madar
Madrid Eventsio.github.pipeworx-io/madrid-events
Maestro Career Studioio.github.seinun-ai/maestro-career-studio
Maeve Socialcom.maevesocial/maeve-social
Magdoxio.magdox/magdox
Magellan Data Spotlightio.magellandata/spotlight
Magento Cloud MCP Serverio.github.juan-cinto-infracommerce/magento-cloud
Maggio.github.sitbon/magg
Magic 8 Ballio.github.pipeworx-io/magic-8-ball
Magic 8 Balllive.alpic.new-test-cli-239fbe01/new-test-cli
Magic 8 Ball QA Demolive.alpic.test5-ca2cc17f/test5
Magic Envelopecom.magic-envelope/invitations
Magic Hourio.github.RhythmP28/magic-hour
Magic Hourio.github.magichourhq/magic-hour
Magic Insightsai.magicinsights/insights
Magic Master — Audio Masteringpro.magicmaster/mastering
MagicBell MCP by usefulapiio.usefulapi/magicbell
MagicInterviewio.github.samihalawa/magicinterview
MagicMarketscom.magicmarkets/mcp
MagicON RF Design Enginesio.github.magiccadai/magicon
MagicScreenshotsio.github.Humanleap/magicscreenshots-mcp
MagicSlidesio.github.theindianappguy/magicslides-mcp
MagicTeXio.github.ZoeLinUTS/magictex
Magistryio.magistry/magistry
Magnificio.github.mcp-dir/magnific-mcp
Magnifica.family Pope Catholic AI Compassio.github.a-church-ai/magnifica-family
Magnificent Jobscom.magnificentjobs/jobs
Magpie Capitalio.github.magpiecapital/magpie
Mags Tack Website MCPcom.magstackonline/site-mcp
Maguyvaai.maguyva/maguyva
Maha Context Reviewcom.mahastrategies/context-review
Maha OS Cognitive Gatewaycom.maha-os/cognitive-gateway
Mahoniaapp.mahonia/mahonia
Mail.appio.github.p-l-ta/mail-mcp
MailBluster MCP by usefulapiio.usefulapi/mailbluster
MailFathomio.github.Krzysztof318/mailfathom
MailFixturecom.mailfixture/mailfixture
MailHunterProio.github.twojlogin/mailhunter-pro
MailInAppcom.mailinapp/mcp
MailJunkyai.mailjunky/mcp
MailMCPio.mailmcp/mailmcp

All 34,377 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)

34,359
Repository platform (raw)
github22,536 66 %
nothing declared11,750 34 %
gitlab73 0.2 %

not recorded for 18 entries

Repository URL listed

34,377
Repository URL listed
yes22,620 66 %
no11,757 34 %

Delivery form (raw)

34,359
Delivery form (raw)
remote25,207 73 %
package7,921 23 %
package and remote734 2.1 %
neither497 1.4 %

not recorded for 18 entries

Execution location

34,377
Execution location
remote25,358 74 %
local9,019 26 %

Icon formats (raw)

34,359
Icon formats (raw)
nothing declared30,450 89 %
image/png2,354 6.8 %
image/png, image/svg+xml811 2.4 %
image/svg+xml656 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)

34,359
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json31,958 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json1,271 3.7 %
https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json499 1.5 %
https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json491 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 34,377 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. 34,377 entries at 200 each are 172 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 36,559 entries in this category32,082 shared MCP servers without a declared package registry 25,719 entries in this category25,719 shared Remotely executed MCP servers 25,476 entries in this category25,358 shared MCP servers over streamable-http only 24,232 entries in this category24,130 shared MCP servers with a repository URL 30,564 entries in this category22,620 shared Remote MCP servers with a repository URL 14,228 entries in this category14,121 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=244