CPFS Runner as an MCP server — deterministic AI coding guardrails via a compiled WASM core.
Connect Runs on your machine
claude mcp add cpfs-mcp -e CPFS_WORKSPACE=<CPFS_WORKSPACE> -e CPFS_DASHBOARD_PORT=<CPFS_DASHBOARD_PORT> -e CPFS_DEBUG=<CPFS_DEBUG> -- npx -y [email protected]{
"mcpServers": {
"cpfs-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CPFS_WORKSPACE": "<CPFS_WORKSPACE>",
"CPFS_DASHBOARD_PORT": "<CPFS_DASHBOARD_PORT>",
"CPFS_DEBUG": "<CPFS_DEBUG>"
}
}
}
}{
"mcpServers": {
"cpfs-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CPFS_WORKSPACE": "<CPFS_WORKSPACE>",
"CPFS_DASHBOARD_PORT": "<CPFS_DASHBOARD_PORT>",
"CPFS_DEBUG": "<CPFS_DEBUG>"
}
}
}
}{
"servers": {
"cpfs-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CPFS_WORKSPACE": "<CPFS_WORKSPACE>",
"CPFS_DASHBOARD_PORT": "<CPFS_DASHBOARD_PORT>",
"CPFS_DEBUG": "<CPFS_DEBUG>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
CPFS_WORKSPACEOptional | Absolute path to the workspace root CPFS will manage (defaults to the current working directory) |
CPFS_DASHBOARD_PORTOptional | Port for the CPFS dashboard web UI (defaults to 8765) |
CPFS_DEBUGOptional | Set to '1' to enable verbose debug logging |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 30 Oct 2026 |
| Last updated | 30 Oct 2026 |
| Registry name | io.github.JonahAlexanian/cpfs-mcp |
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