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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.

13,770 servers 33% 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 13,770

Entries
Aegisio.github.verrysimatupang99/aegis
Aegis — AI Agent Governanceio.github.Acacian/aegis
Aethelgard Ledgerfinance.aethelgard/ledger
Aether WCAG Scannerio.github.allchemylabs/aether-wcag-scanner
Aether Wealthai.aetherwealth/mcp
Afi MCPio.github.Servosity/afi-mcp
Africa Data Bankio.github.Africa-Data-Bank/africadb
African Speech Corpora Quality Auditio.github.papasega/african-speech-corpora
Afterpathsio.github.burnssa/afterpaths
Agendumio.github.sralli/agendum
Agent API Gatewayio.github.ZachDreamZ/agent-api-gateway
Agent Action Gateio.github.AAH20/agent-action-gate
Agent Almanac MCPio.github.survivorforge/agentalmanac-mcp
Agent Billboardio.github.yourmatematt/agent-billboard-mcp
Agent Blast Radiusio.github.makash/agent-blast-radius
Agent Blueprintio.github.agent-blueprint/mcp-server
Agent Boosterio.github.sseshachala/agent-booster
Agent Coherence — Stale Write Guard (FS)io.github.Cohexa-ai/stale-write-guard-fs
Agent Commsio.github.ExaDev/agent-comms
Agent Coreio.github.kinbinghua-lgtm/agent-core-mcp
Agent Cowork Memoryio.github.rxthlessbeats/agent-cowork-memory
Agent Domainsai.clize/domains
Agent Droid Bridgeio.github.Neverlow512/agent-droid-bridge
Agent Emailio.github.UseJunior/email-agent-mcp
Agent Guardrail MCP Serverio.github.JarvisOnM4/agent-guardrail
Agent Guardrailsio.github.logi-cmd/agent-guardrails
Agent Guestbookcom.bluecloudcyber/guestbook
Agent Inboxai.clize/inbox
Agent Indexio.github.agent-idx/mcp
Agent Internio.github.SinanTufekci/agent-intern
Agent Interop Runtimeio.github.Praket7/agent-interop-runtime
Agent JSON Reliabilityio.github.toninovo4249-ai/agent-json-reliability
Agent MCP Gatewayio.github.roddutra/agent-mcp-gateway
Agent Mandate Verificationio.github.API-Disk-Integrations/agent-mandate
Agent Observabilityio.github.blueskylineassets/agent-observability
Agent Onlyio.github.vegelate/agent-only
Agent Passportio.github.johnInarti/agent-passport
Agent Pattern MCPio.github.olk/agent-pattern-mcp
Agent Press Wireio.github.dylancaponi/agent-press-wire
Agent Readiness Auditorio.github.asish-singh/agent-readiness-auditor
Agent Recall Trailio.github.fantasyce/agent-recall-trail
Agent Relayio.github.mmmikael/arelay
Agent Release Auditorio.github.veyndrasystems/agent-release-auditor
Agent Residue Evidenceio.github.fantasyce/agent-residue-evidence
Agent Runtime Proofio.github.fantasyce/agent-runtime-proof
Agent Security Scannerio.github.Mikehzp/agentvuln
Agent Sniperio.github.nirholas/agent-sniper
Agent Spreadsheet MCPio.github.PSU3D0/agent-spreadsheet
Agent Storefrontai.clize/storefront
Agent Toolboxio.github.solhammer/agent-toolbox

All 13,770 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 13,764 of its 13,770 entries with "MCP servers available as a package only" (14,812). 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

13,770
Required secrets declared
no10,889 79 %
yes2,881 21 %

Schema version of the raw record (raw)

13,764
Schema version of the raw record (raw)
https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json12,746 93 %
https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json539 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.json117 0.8 %
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)

13,764
Repository platform (raw)
github13,143 95 %
nothing declared607 4.4 %
gitlab14 0.1 %

not recorded for 6 entries

Repository URL listed

13,770
Repository URL listed
yes13,163 96 %
no607 4.4 %

Icon formats (raw)

13,764
Icon formats (raw)
nothing declared13,205 96 %
image/png404 2.9 %
image/svg+xml102 0.7 %
image/png, image/svg+xml48 0.3 %
image/jpeg3 0.0 %
image/webp2 0.0 %

not recorded for 6 entries

Path argument present

13,770
Path argument present
no13,351 97 %
yes419 3.0 %

Per property, the measured values inside this category. The share refers to the 13,770 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. 13,770 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.

Categories sharing entries with this one

MCP servers available as a package only 14,812 entries in this category13,764 shared Locally executed MCP servers 17,143 entries in this category13,770 shared Local MCP servers with a repository URL 16,232 entries in this category13,163 shared Local MCP servers without declared required secrets 13,303 entries in this category10,889 shared MCP servers over stdio, as an npm package only 8,731 entries in this category8,731 shared Local MCP servers as an npm package only 10,137 entries in this category8,731 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=4