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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 14,301 to 14,350 of 33,944

Entries
Paperform MCP by usefulapiio.usefulapi/paperform
Papers With Backtestcom.paperswithbacktest/papers-with-backtest
Papers by Ouroboros Appsio.github.LAHutchins91/papers
PapersFlowio.github.papersflow-ai/papersflow
Paperswithcodeio.github.pipeworx-io/paperswithcode
Papertextapp.papertext.app/papertext-mcp
ParCADio.github.ierehon1905/parcad
ParaView MCP Serverio.github.failed33/paraview-mcp-server
Parabol MCP by usefulapiio.usefulapi/parabol
Paragraph count, text discardedio.github.sadri-dridi/para-count
Paraguay Dncpio.github.pipeworx-io/paraguay-dncp
Paraguay Invoices (SIFEN e-Kuatia via FacturaSend)app.wishpool/paraguay-invoice-mcp
Parahumanco.parahuman/parahuman
Parallax Venturescom.parallaxvinc/parallax
Parallectio.github.securecoders/parallect
Parallel Search MCPai.parallel/search-mcp
Parallel Task MCPai.parallel/task-mcp
Parametercom.parameterfit/parameter
Paramount Loan Services — Mortgage Loan Applicationcom.paramountls/loan-application
Paraísoio.github.junoventures/paraiso-sampa-br
ParcelLaunch — 3D property listings from an addresscom.parcellaunch/parcellaunch
Parcellaire — cadastre, DVF & DPEre.parcellai/parcellaire
Paris Eventsio.github.pipeworx-io/paris-events
Parks Openca.parksopen/parksopen
Parky — Park Planningcom.parkypass/parky
Parlayrun.parlay/parlay
Parlelcom.parlel/parlel
Parleydev.weldra/parley
Parleyio.idntty/parley
Parleyio.github.5uper0/parley
Parlor.shsh.parlor/parlor
Parquet magic-byte check, file discardedio.github.sadri-dridi/parquet-magic
Parquet magic-byte check, file discardedio.github.sadri-dridi/parquet-ok
ParquetHarmonizeio.github.tfitzgerwitness/parquetharmonize
Parrotio.github.turantekin/parrot
ParrotNotesapp.parrotnotes/parrotnotes
Parse-DMARC MCP Serverio.github.meysam81/parse-dmarc
Parse.ly MCPcom.parsely.dash/mcp
ParseBouncecom.parsebounce/parsebounce
ParseStreamcom.parsestream/parsestream
Parseableio.github.parseablehq/parseable-mcp-server
Parsecs to light-years, number discardedio.github.sadri-dridi/pc-ly
Parseiumcom.parseium/mcp
Parselio.github.ahutto87/parsel
Parselboxio.github.thesanjeetc/parselbox
Parser Clubclub.parser/parser-club
PartForgeai.partforge/partforge
Partelistoio.github.TargetGrps/partelisto-mcp
Partglyph MCP Gatewaycom.partglyph/mcp-gateway
Particle Health MCP by usefulapiio.usefulapi/particlehealth

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=287