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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.

13,710 servers 33% of 41,867 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 1 to 50 of 13,710

Entries
$THREE Tokenio.github.nirholas/three-token-mcp
.FAF Contextio.github.Wolfe-Jam/faf-mcp
.FAF Contextone.faf/faf-mcp
.NET Debugger for MCPio.github.nevse/dotnet-debugger-mcp
.NET MCP Serverio.github.jongalloway/dotnet-mcp
1C OData MCPio.github.alexgrebeshok-coder/onec-odata-mcp
1Claw Vaultio.github.1clawAI/1claw-mcp
1c-rest-mcpio.github.theYahia/1c-rest-mcp
2Captcha MCPio.github.aruxojuyu665/twocaptcha-mcp
2D Assets MCPio.github.crony-io/2d-assets-mcp
2kw.aiai.2kw/mcp-server
3D AI Agent Avatario.github.nirholas/3D-AI-Agent-Avatar
3D AR Studioio.github.nirholas/3d-ar-studio
3D CAD Convertercom.contenta-software/cad-converter
3D Visualizerio.github.kleinicke/3d-visualizer
402-LABio.github.Kairose-master/402-lab
A1 Yandex KIT MCPio.github.gistrec/mcp-yandex-kit
A11Y Toolkitio.github.kinti/a11y-toolkit
A11y Checkcom.a11ychk/mcp
A202io.github.a202-protocol/a202-mcp
A2A402 Agent Work Routerio.github.jrcumminsent/a2a402
A2AL Daemonio.github.a2al/a2ald
A2CRio.github.a2cr/a2cr-mcp
AAAA-Nexus MCPio.github.AAAA-Nexus/aaaa-nexus-mcp
AAI Gatewayio.github.gybob/aai-gateway
ABAP Acceleratorio.github.openkash/abap-accelerator
ABAPilotio.github.NicoHern/abapilot-mcp
ABN Lookup MCP by UnClickio.github.malamutemayhem/abn
ABOVO.co — Email-to-Web Publishingio.github.seanfenlon/abovo-mcp-server
ACR — Agent Composition Recordsio.github.Tethral-Inc/acr
ACR — Agent Composition Recordsio.github.TethralAI/acr
ADCIRC Model Setup MCP Serverio.github.mansurjisan/adcirc-mcp
ADCIRC Model Setup MCP Serverio.github.oceanmodeling/adcirc-mcp
AEC Model Bridgeio.github.Sam-AEC/aec-model-bridge
AEM Content Manager (ACM)io.github.wttech/acm-mcp-server
AEMETio.github.mmillan76/aemet-mcp
AENA Flights MCPio.github.MrGo2/aena-mcp
AESO MCPio.github.bchoi-qwe/aeso-mcp
AGENTS.md Generatorio.github.nushey/agents-md-generator
AGZ Rust Coderio.github.ugur-murat-alt/agz-rust-coder
AGZ Rust MCPio.github.ugur-murat-alt/agz-rust-mcp
AI Agent Memoryio.github.xiangzi1126/ai-agent-memory-mcp
AI Agent Search Optimizationio.github.SeyitKaanGunes/ai-agent-search-optimization
AI AppSecio.github.subodhkc/ai-appsec
AI Crypto Sniper MCPcom.aicryptosniper/ai-crypto-sniper-mcp
AI Crypto Sniper MCP (renamed)co.solsniperbot/solana-snipe-bot-mcp
AI Diagram Makerio.github.erajasekar/ai-diagram-maker-mcp
AI Divination Skillsio.github.sapuyou45-bit/ai-divination-skills
AI Firewall MCPio.github.Akhilucky/ai-firewall-mcp
AI Guardianio.github.AIops-tools/ai-guardian

All 13,710 entries in the list, with filters and pagination

Newest in this category

The 10 entries of this category that this registry listed most recently for the first time and that are not shown above. Ordered by the day first listed, not by any rating.

How it works

Before choosing

This selection matches the complete source declaration. A combination of multiple transports or package sources is a separate value. A category for exactly one value therefore excludes entries declaring additional values. Each entry provides the complete declaration and its source.

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 13,704 of its 13,710 entries with "MCP servers available as a package only" (14,740). 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

13,710
Required secrets declared
no10,839 79 %
yes2,871 21 %

Schema version of the raw record (raw)

13,704
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json12,687 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json540 3.9 %
https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json320 2.3 %
https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json117 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)

13,704
Repository platform (raw)
github13,087 95 %
nothing declared603 4.4 %
gitlab14 0.1 %

not recorded for 6 entries

Repository URL listed

13,710
Repository URL listed
yes13,107 96 %
no603 4.4 %

Icon formats (raw)

13,704
Icon formats (raw)
nothing declared13,155 96 %
image/png396 2.9 %
image/svg+xml101 0.7 %
image/png, image/svg+xml47 0.3 %
image/jpeg3 0.0 %
image/webp2 0.0 %

not recorded for 6 entries

Path argument present

13,710
Path argument present
no13,293 97 %
yes417 3.0 %

Per property, the measured values inside this category. The share refers to the 13,710 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. 13,710 entries at 200 each are 69 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.

Questions about this selection

How do I set up one of these servers in my client?

Open the entry and choose “Build configuration” when a launch template is available. The builder lists the supported clients and identifies the values you need to supply. A generated file does not establish that the server is reachable or works with your installation.

View clients and setup

Are the listed servers free?

Membership of this category says nothing about price. Neither a repository address nor the absence of declared required secrets establishes that a service is free. Check the individual provider’s pricing and access terms.

How can I follow changes to this selection?

Each entry identifies the source and collection date of its declarations. The change stream for this category shows published changes to its entries. You can subscribe to its Atom feed without creating an account.

Follow changes to this category

Categories sharing entries with this one

MCP servers available as a package only 14,740 entries in this category13,704 shared Locally executed MCP servers 17,056 entries in this category13,710 shared Local MCP servers with a repository URL 16,152 entries in this category13,107 shared Local MCP servers without declared required secrets 13,238 entries in this category10,839 shared MCP servers over stdio, as an npm package only 8,699 entries in this category8,699 shared Local MCP servers as an npm package only 10,092 entries in this category8,699 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