io.github.j0hanz/filesystem-mcp
Filesystem MCP
Is the Filesystem MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-12.
Filesystem MCP server for AI assistants.
alive probed 2026-11-14 · unchanged since 2026-11-12
- Run it
- npx -y @j0hanz/filesystem-mcp@2.20.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- filesystem-mcp 2.20.0
- Capabilities
- completions, prompts, resources, tools
- Instructions
- 274 characters
- Of a 1M window
- 1.1 % of a 1M context window
- Count
- 11k tokens in Claude Opus 5.5, exact, measured 2026-11-12. With the Claude Code prefix mcp__…__ on each tool name: 11k. The o200k_base estimate is 6.5k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/j0hanz/filesystem-mcp
- Website
- https://github.com/j0hanz/filesystem-mcp
- Registry
- active, updated 2026-11-11 · registry entry
- Changes
- 9 recorded, reachable in 9 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.66×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| replace_text | 1 305 | 786 | 12 % |
| edit | 1 246 | 750 | 11 % |
| search_text | 1 090 | 656 | 10 % |
| find_files | 992 | 597 | 9 % |
| read | 942 | 567 | 9 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- Code Review Analyst io.github.j0hanz/code-review-analyst · not found
- Cortex MCP — Multi-Level Reasoning Server io.github.j0hanz/cortex-mcp · alive
- Fetch URL MCP Server io.github.j0hanz/fetch-url-mcp · not found
- io.github.j0hanz/filesystem-context · not found
- Memory MCP Server io.github.j0hanz/memory-mcp · crashed on start
- io.github.j0hanz/superfetch · crashed on start
- io.github.jack1590/RokuMCP · alive
- io.github.jackdark425/aigroup-mdtoword-mcp · alive
Servers that mention filesystem.
- com.politicalcomms/docs · alive
- MemoFS MCP Server dev.memofs/mcp-server · needs your URL
- Execute chroot-filesystem-jail-mcp io.github.Evozim/chroot-filesystem-jail-mcp · paid (402)
- Lambda Labs MCP by usefulapi io.usefulapi/lambda-labs · timeout
- flockfs com.flockfs/flockfs · needs auth
- ellmos FileCommander io.github.ellmos-ai/ellmos-filecommander-mcp · alive
- Filesystem io.github.domdomegg/filesystem-mcp · alive
- io.github.bitofacoder/omni-mcp-server · alive
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-11-12 08:57 | alive | 658 ms | 14 | 11k | 6.5k |
| 2026-11-08 08:03 | alive | 622 ms | 14 | 8.7k | 5.1k |
| 2026-11-07 07:51 | alive | 646 ms | 14 | 8.4k | 5.0k |
| 2026-11-06 08:38 | alive | 672 ms | 14 | 8.1k | 4.8k |
| 2026-11-05 08:36 | alive | 669 ms | 14 | 7.7k | 4.5k |
| 2026-11-02 08:21 | alive | 710 ms | 14 | 7.7k | 4.5k |
| 2026-10-30 07:50 | alive | 628 ms | 14 | 7.7k | 4.5k |
| 2026-10-29 07:46 | alive | 540 ms | 14 | 7.7k | 4.5k |
| 2026-10-16 06:26 | alive | 788 ms | 13 | 7.1k | 4.2k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.