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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 601 to 650 of 34,377

Entries
AWS Builderio.github.Evozim/aws-builder
AWS Cloud Service Updates & Announcements — buy per-query (awswhatsnew)com.a2awire/data-aws-news-cloud-service-update-announcement
AWS MCP Serverio.github.aws/aws-mcp
AWS MCP Serverio.github.aws/mcp-proxy-for-aws
AXIS Avatar Foundrycom.jonathanarvay/axis-avatar-foundry
AXL — Run Sales, Marketing & Courses with Your AItech.axl/axl
AXON Epistemic MCPio.github.Bemarking/axon-emcp
AXON Epistemic MCPcom.ricardovelit/axon-emcp
AYLENTO · 艾伦兔io.github.popularzb/aylento
AZAV-Dokude.azav-doku/avgs-tools
Aalyio.aaly/aaly
Aardai.aard/aard
Aave MCPcom.aave/mcp
Aayat AIio.github.faisal-maverick/aayat-ai
AbaPayio.github.investorphem/abapay
Abfallkalender Deutschlandio.github.AlpayC/mcp-abfall
Abfallkalender Deutschlandio.github.AlpayC/abfall-mcp-server
Abgeordnetenwatchio.github.pipeworx-io/abgeordnetenwatch
Ablakunio Nyílászáró MCPcom.ablakunio/nyilaszaro-mcp
Able and Agentcom.ableandagent/able-and-agent
Able and Agent Sandboxcom.ableandagent/sandbox
Ableton Live MCP Serverio.github.wstierhout/ableton-live-mcp
Ableton MCP Serverio.github.ntworm/ableton-mcp-server
Ably MCP by usefulapiio.usefulapi/ably
Abn Lookupio.github.pipeworx-io/abn-lookup
AbraFlexiio.github.Vitexus/abraflexi
Abs Auio.github.pipeworx-io/abs-au
Abs Loan Levelio.github.pipeworx-io/abs-loan-level
Absolute Best Aircom.absolutebestair/hvac
Absolute value sign, number discardedio.github.sadri-dridi/abs-ok
Abstract Phoneio.github.pipeworx-io/abstract-phone
Abstraxn Agent Layerio.github.sandeep-antier/abstraxn
Abuseipdbio.github.pipeworx-io/abuseipdb
AbuzzHivecom.abuzzhive/abuzzhive
Abyssalecom.abyssale/mcp
Abyssfall: Operation Sunken Crowncom.abyssfallgame/mcp
Academic Evidence Packio.github.jmxisnext/academic-evidence-pack
Academic Research Intelligence MCPio.github.FoundryNet/academic-intel-mcp
Academic Research Kernelio.github.xngg1021/academic-research-kernel
Academic Research Searchorg.memoryapi/research
AccIntio.github.maxbaluev/accint
Accelo MCP by usefulapiio.usefulapi/accelo
Accent site contentcom.accentvoice/site
Accept JSON hintio.github.sadri-dridi/accept-json
Accept media-range count, value discardedio.github.sadri-dridi/accept-ok
Accept-CH token count, value discardedio.github.sadri-dridi/accept-ch
Accept-Encoding token count, value discardedio.github.sadri-dridi/accept-enc
Accept-Language tag count, value discardedio.github.sadri-dridi/accept-lang-ok
Accept-Post media-type count, value discardedio.github.sadri-dridi/accept-post
Access Review Checklistio.github.Wxt-ai/access-review-checklist

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=13