io.github.Oncorporation/filesystem-server
FileSystem MCP Server
Secure filesystem access for AI agents with configurable directory and file type restrictions
alive probed 2026-10-15
8tools
2.1ktokens in Claude Opus 5.5
2.2ktokens in Claude Code
1.0 %of a 200k context window
1.3ko200k_base estimate
2.0 sto initialize
4 msto list tools
- Run it
- uvx vs-filesystem-mcp-server==0.1.4 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- FileSystemServer
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/Oncorporation/filesystem_server
- Registry
- active, updated 2026-10-13 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| list_directory | 259 | 20 % |
| list_resources | 205 | 16 % |
| init | 198 | 16 % |
| write_file_binary | 181 | 14 % |
| write_file | 133 | 11 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.Oncorporation/filesystem-server)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.