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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 151 to 200 of 33,944

Entries
A2A Artifact Handoffio.github.imagiever-ar/a2a-artifact-handoff
A2A Cosmeticsio.github.greencore-solutions/a2a-cosmetics
A2A Grocery — the agentic hub for retail grocery procurementio.github.greencore-solutions/cpg-knowledge-graph
A2A Grocery — the agentic hub for retail grocery procurementio.github.greencore-solutions/a2a-grocery
A2A Orbitcom.a2aorbit/orbit
A2A Passport — one GTIN, one call, everything GSC knows, signedio.github.greencore-solutions/a2a-passport
A2A Peptidesio.github.A2A-Peptides/a2a-peptides
A2A Retailmedia — the agentic retail-media hub for groceryio.github.greencore-solutions/a2a-retailmedia
A2A Trust Planeio.github.The-825/a2a-trust-plane
A2A to MCP bridgeio.github.AmirK-S/a2a-to-mcp
A2ABenchio.github.khalidsaidi/a2abench
A2AL Daemonio.github.a2al/a2ald
A2AParkcom.a2apark/a2apark
A2AWirecom.a2awire/a2awire
A2AWire Benchmark: Predict the Newscom.a2awire/benchmark-predict-the-news
A2AWire Benchmark: Support Agent Trialscom.a2awire/benchmark-support-agent-trials
A2AWire Benchmark: Support Agent Trials - Hard Modecom.a2awire/benchmark-support-agent-trials-hard
AAAA-Nexus MCPio.github.AAAA-Nexus/aaaa-nexus-mcp
AAAS Science Magazine research breakthrough news (scienceorgwatch)com.a2awire/data-science-aaas-research-breakthrough-news
AAI Gatewayio.github.gybob/aai-gateway
AARF Utility Networkorg.qolapps/aarf-utility-network
ABA routing 9-digit shape, value discardedio.github.sadri-dridi/aba-ok
ABC Remonty Olebapl.oleba/remonty
ABMeterai.abmeter/abmeter
ABN Lookup MCP by UnClickio.github.malamutemayhem/abn
ABNF rule count, body discardedio.github.sadri-dridi/abnf-ok
ABS Data (observed)io.github.SamJB123/abs-data
AB[500] research and bountiesio.github.maxand98/ab500-research
ACA - Automated Client Acquisitioncom.automatedclientacquisition.www/aca
ACAH header-name count, value discardedio.github.sadri-dridi/acah-ok
ACAM method token count, value discardedio.github.sadri-dridi/acam-ok
ACAO star-or-origin, value discardedio.github.sadri-dridi/acao-ok
ACC MCPio.scanbimlabs/acc-mcp
ACEL Observatoryza.co.pccswart.radar/acel-demand-radar
ACI Risk Indicatorsio.github.aethon-credit/aci-risk-indicators
ACLM Lab Interpreterio.github.rabyavalla/aclm-lab-interpreter
ACN Preflightio.github.Abacore-net/acn-preflight
ADCIRC Model Setup MCP Serverio.github.mansurjisan/adcirc-mcp
ADCIRC Model Setup MCP Serverio.github.oceanmodeling/adcirc-mcp
ADEXTOxyz.adexto/mcp
ADF agentdatafeedcom.agentdatafeed/agentdatafeed
ADHDEvaluationsfyi.adhdevaluations/adhdevaluations
ADITUS Developer Portal MCPcom.aditus.developers/developer-portal
ADM Google Adscc.adm/google-ads
AEO Auditno.synligdigital/aeo-audit
AEO/GEO by VibeSEOdev.vibeseo/geo
AET Machine Commerceio.github.mnvhmslf/aet-machine-commerce
AETHER Machine Relationship Meshio.github.visionastro48-dev/aether-machine-relationship-mesh
AETRE & The Governed Agentio.github.grayclayton/aetre-mcp
AFD Knowledgecom.afdinstitute/afd-knowledge

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=4