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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 3,301 to 3,350 of 13,862

Entries
Pointcastio.github.Hugelidus/pointcast
Pointframe MCP Serverio.github.dimitar-radenkov/pointframe-mcp
PokéArenaio.github.shaumik/pokearena
Pokémon TCG APIcom.pokemontcgapi/mcp
Polarityio.github.radar989/polarity-mcp
Polis Protocolio.github.yehudalevy-collab/polis-protocol
Polish Archives Indexesio.github.ianderso/polish-archives-mcp
Polish Open Data (unofficial)io.github.JacekSmi/PolishOpenData
PolyAccounts accountingio.github.andrewblount/polyaccounts
PolyAccounts synthetic accounting demoio.github.andrewblount/polyaccounts-demo
PolyDoctech.polydoc/polydoc-mcp
Polyglot Database MCPio.github.hyperpolymath/poly-db-mcp
Polyglot SSG MCPio.github.hyperpolymath/poly-ssg-mcp
Polymarket MCPio.github.beejmaxx/polymarket-mcp
Polymarket Paper Traderio.github.agent-next/polymarket-paper-trader
Polymationio.github.paradoxsyn/rivemcp
Polypack Memoryio.github.imattau/polypack-mcp
Polyramaio.github.Polyrama/mcp
Pondlog Garden (Deprecated)io.github.andrewschristison/pondlog-garden
Pondlog Mushroom Observerio.github.andrewschristison/pondlog-mushroomobserver
Pondlog Nature Briefingio.github.andrewschristison/pondlog
Pondlog Phenology (USA-NPN)io.github.andrewschristison/pondlog-npn
Pondlog USGS Waterio.github.andrewschristison/pondlog-usgs
Pondlog eBirdio.github.andrewschristison/pondlog-ebird
Pondlog iNaturalistio.github.andrewschristison/pondlog-inaturalist
PopUp Organizercom.usepopup/organizer
Porkbun DNS 🐷io.github.major/porkbun
Porkbun MCPio.github.korobkov-v/porkbun-mcp
Portageio.github.tomtom87/portage
Portprooforg.portproof/mcp
Portveilio.github.roybogs/portveil-mcp
Pose Labio.github.hpdkhoa/poselab-mcp
Post for Me MCP Proio.github.helbertparanhos/postforme-mcp-pro
PostFaderio.github.synopsys0/postfader-fl-studio-mcp
PostSiderio.github.lumizone/postsider
PostgreSQLio.github.antonorlov/mcp-postgres-server
PostgreSQL CVE & Release Intelligenceio.github.meob/pg-cve-mcp
PostgreSQL MCP Serverio.github.YawLabs/postgres-mcp
PostgreSQL MCP Serverio.github.itunified-io/postgres
PostgreSQL MCP Serverio.github.musaddiq-dev/postgresql-mcp-server
PostgreSQL MCP Serverio.github.neverinfamous/postgres-mcp-server
PostgreSQL performance Tuner MCP Serverio.github.isdaniel/pgtuner_mcp
Postgres (read-only)io.github.contextflo/postgres-mcp
Postgres AIopsio.github.AIops-tools/postgres-aiops
Postgres MCPio.github.edelciomolina/postgres-mcp
Postio — UK Address, Postcode, Email & Phone Validationuk.co.postio/postcode-address-validation
Postlint MCP Serverio.github.conorbronsdon/postlint-mcp
Power BI Analyst MCPio.github.mbrummerstedt/powerbi-analyst-mcp
Power BI Authoring MCP Server (Local)com.microsoft/powerbi-modeling-mcp
Power Portals Proio.github.Power-Portals-Pro/powerportalspro-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=67