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MCP servers over stdio only

MCP servers whose manifest declares stdio as its only transport. They run as a local process and communicate over standard input and output.

13,862 servers 32% 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 4,851 to 4,900 of 13,862

Entries
YAML Workflowio.github.orieg/yaml-workflow
YAP — Yet Another Packagerio.github.M0Rf30/yap
YTDL RMCPai.dinglebear/rytdl
YTDL RMCPai.dinglebear/ytdl-rmcp
YaCy peer-to-peer searchio.github.pad01g/yacy-search
Yab, Yet Another Browsercom.yetanotherbrowser/yab
Yahoo Financeio.github.danishashko/yahoo-finance-mcp
Yahoo Financeio.github.narumiruna/yfinance-mcp
Yandex Analyticsio.github.nozikov/yandex-mcp
Yandex Audience MCPio.github.A1-x-Tech/mcp-yandex-audience
Yandex Delivery MCPio.github.A1-x-Tech/mcp-yandex-dostavka
Yandex Directio.github.gistrec/mcp-yandex-direct
Yandex Direct MCPio.github.askads/mcp-yandex-direct
Yandex Merchants MCPio.github.A1-x-Tech/mcp-yandex-merchants
Yandex Metrica MCPio.github.askads/mcp-yandex-metrica
Yandex Metrica MCPio.github.stufently/yandex-metrica-mcp
Yandex Music (unofficial)io.github.kenzolika/yandex-music-mcp
Yandex Webmaster MCPio.github.askads/mcp-yandex-webmaster
Yandex Wordstat MCPio.github.askads/mcp-yandex-wordstat
Yango Delivery MCPio.github.A1-x-Tech/mcp-yango-delivery
Yango Tech Retail MCPio.github.A1-x-Tech/mcp-yango-retail
Yapitalismio.github.AytuncYildizli/yapitalism
Yapsio.github.richawo/yaps
Yarr MCPai.dinglebear/yarr
Yarr MCPai.dinglebear/yarr-mcp
Yault AESPxyz.yault/aesp
Yaverio.github.kivanccakmak/yaver
Yaverio.github.yaver-io/yaver
Yaw Labs AWS MCPio.github.YawLabs/aws-mcp
Ybe Checkio.github.AddyCuber/ybe-check
Yeastar P-Series PBXio.github.WYRE-AI/yeastar-mcp
YouTube Dataio.github.kirbah/mcp-youtube
YouTube MCPio.github.mrsknetwork/ytmcp
YouTube MCP by UnClickio.github.malamutemayhem/youtube
YouTube Research MCPio.github.coyaSONG/youtube-research
YouTube Shorts Agentio.github.davidmosiah/youtube-shorts-agent
YourMemoryio.github.sachitrafa/yourmemory
Yuanzi Zhiyi Bazi Agent Kitio.github.yuanzizhiyi/yuanzi-bazi-agent-kit
Yueying – Let AI watch videosio.github.vsh5dvsch7-png/yueying
YunoHost MCPio.github.imattau/yunohost-mcp
Yuque MCPio.github.wwwwujl/yuque-mcp
Yzel — 1C:Enterpriseio.github.Aiyo28/yzel
ZERO MCPio.github.zero-intel/zero
ZKshareio.github.sp0oby/zkshare
Zabbix AI CLIio.github.stufently/zabbix-ai-cli
Zabbix AI CLI MCPio.github.stufently/zabbix-ai-cli-mcp
Zabbix API MCPio.github.shigechika/zapi-mcp
Zactonzio.github.zactonz/zactonz-mcp
Zamery Browserio.github.maemreyo/zamery-browser
Zammad MCPio.github.Servosity/zammad-mcp

All 13,862 entries in the list, with filters and pagination

What this category selects

What this category selects
Transports (raw)stdio
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

  • Transports (raw) is the complete, sorted enumeration of what a manifest declares. So "stdio" means exactly that and nothing else: an entry that also declares something different is not in this category.
  • This category shares 13,856 of its 13,862 entries with "MCP servers available as a package only" (14,911). Both are measured from different original data; that they hit almost the same set is a finding, not a rule.

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

Required secrets declared

13,862
Required secrets declared
no10,965 79 %
yes2,897 21 %

Schema version of the raw record (raw)

13,856
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json12,829 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json542 3.9 %
https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json322 2.3 %
https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json123 0.9 %
https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json37 0.3 %
https://static.modelcontextprotocol.org/schemas/2025-12-11/server.schema.json2 0.0 %

and 1 more values · not recorded for 6 entries

Repository platform (raw)

13,856
Repository platform (raw)
github13,234 95 %
nothing declared608 4.4 %
gitlab14 0.1 %

not recorded for 6 entries

Repository URL listed

13,862
Repository URL listed
yes13,254 96 %
no608 4.4 %

Icon formats (raw)

13,856
Icon formats (raw)
nothing declared13,293 96 %
image/png405 2.9 %
image/svg+xml102 0.7 %
image/png, image/svg+xml51 0.4 %
image/jpeg3 0.0 %
image/webp2 0.0 %

not recorded for 6 entries

Path argument present

13,862
Path argument present
no13,434 97 %
yes428 3.1 %

Per property, the measured values inside this category. The share refers to the 13,862 entries of the category, not to the registry.

The same category through the interface

curl -s "https://api.tracevero.com/v1/eintraege?art=mcp_server&roh_transportarten=stdio&grenze=200"

The command carries exactly the condition of this page. 13,862 entries at 200 each are 70 requests; the total is in the X-Gesamt header.

Changes to these entries

https://tracevero.com/aenderungen.atom?thema=transport-stdio

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 available as a package only 14,911 entries in this category13,856 shared Locally executed MCP servers 17,251 entries in this category13,862 shared Local MCP servers with a repository URL 16,336 entries in this category13,254 shared Local MCP servers without declared required secrets 13,393 entries in this category10,965 shared MCP servers over stdio, as an npm package only 8,771 entries in this category8,771 shared Local MCP servers as an npm package only 10,184 entries in this category8,771 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/transport-stdio?seite=98