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.
13,935 servers 32% of 43,176 in the directory
This category in numbers
- 11,029 79 % Required secrets declared: no
- 13,319 96 % Repository URL listed: yes
- 13,502 97 % Path argument present: no
- 13,299 95 % Repository platform (raw): github
The most frequent value per property, counted across the entries of this category. The full distribution is further down.
Entries
Filter further
- Execution location: local
- Execution location: remote
- Required secrets declared: no
- Required secrets declared: yes
- Repository URL listed: yes
- Repository URL listed: no
- recently updated first
Entries 7,951 to 8,000 of 13,935
All 13,935 entries in the list, with filters and pagination
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 13,929 of its 13,935 entries with "MCP servers available as a package only" (14,991). 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
13,935| no | 11,029 79 % |
|---|---|
| yes | 2,906 21 % |
Schema version of the raw record (raw)
13,929| https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json | 12,901 93 % |
|---|---|
| https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json | 542 3.9 % |
| https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json | 322 2.3 % |
| https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json | 124 0.9 % |
| https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json | 37 0.3 % |
| https://static.modelcontextprotocol.org/schemas/2025-12-11/server.schema.json | 2 0.0 % |
and 1 more values · not recorded for 6 entries
Repository platform (raw)
13,929| github | 13,299 95 % |
|---|---|
| nothing declared | 616 4.4 % |
| gitlab | 14 0.1 % |
not recorded for 6 entries
Repository URL listed
13,935| yes | 13,319 96 % |
|---|---|
| no | 616 4.4 % |
Icon formats (raw)
13,929| nothing declared | 13,361 96 % |
|---|---|
| image/png | 411 2.9 % |
| image/svg+xml | 101 0.7 % |
| image/png, image/svg+xml | 51 0.4 % |
| image/jpeg | 3 0.0 % |
| image/webp | 2 0.0 % |
not recorded for 6 entries
Path argument present
13,935| no | 13,502 97 % |
|---|---|
| yes | 433 3.1 % |
Per property, the measured values inside this category. The share refers to the 13,935 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. 13,935 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
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=160