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.
What this excerpt selects
| Transports (raw) | stdio measured directly |
|---|
A derived value carries its raw declaration beside it; the derivation rule is published, with a version, on the methodology page.
What this excerpt 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 excerpt.
- This excerpt shares 10,179 of its 10,185 entries with "MCP servers available as a package only" (11,000). Both are measured from different raw declarations; 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 excerpt is distributed
Required secrets declared
10,185| no | 7,750 76 % |
|---|---|
| yes | 2,435 24 % |
Schema version of the raw record (raw)
10,179| https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json | 9,218 91 % |
|---|---|
| https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json | 493 4.8 % |
| https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json | 315 3.1 % |
| https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json | 115 1.1 % |
| https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json | 36 0.4 % |
| https://registry.modelcontextprotocol.io/v0/schema/2025-12-11 | 1 0.0 % |
and 1 more values · not recorded for 6 entries
Repository platform (raw)
10,179| github | 9,725 95 % |
|---|---|
| nothing declared | 443 4.3 % |
| gitlab | 11 0.1 % |
not recorded for 6 entries
Repository URL listed
10,185| yes | 9,742 96 % |
|---|---|
| no | 443 4.3 % |
Icon formats (raw)
10,179| nothing declared | 9,782 96 % |
|---|---|
| image/png | 282 2.8 % |
| image/svg+xml | 83 0.8 % |
| image/png, image/svg+xml | 28 0.3 % |
| image/jpeg | 2 0.0 % |
| image/webp | 2 0.0 % |
not recorded for 6 entries
Path argument present
10,185| no | 9,967 98 % |
|---|---|
| yes | 218 2.1 % |
Per property, the measured values inside this excerpt. The share refers to the 10,185 entries of the excerpt, not to the registry.
The same excerpt 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. 10,185 entries at 200 each are 51 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 excerpt. The feed carries an identifier of its own, so a feed reader keeps it apart from the full stream.
Excerpts sharing entries with this one
Per neighbour its own size and the counted number of shared entries. An excerpt without a single shared entry is not listed here.
Entries
Entries 9,551 to 9,600 of 10,185
All 10,185 entries in the list, with filters and pagination
tracevero · https://tracevero.com/themen/transport-stdio?seite=192