Claude Desktop Plumbline — a trust layer for LLM answers describe_fact_capabilities
How to: Claude Desktop Plumbline — a trust layer for LLM answers describe_fact_capabilities
Add Plumbline — a trust layer for LLM answers to Claude Desktop
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01
Open ~/Library/Application Support/Claude/claude_desktop_config.json and merge this in. Keep any servers already there.
{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://plumbline.lattice-sys.com/mcp/demo"
]
}
}
}-
02
Save the file and restart Claude Desktop.
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03
Ask for something describe_fact_capabilities does. Claude Desktop lists the server's tools on connect and calls describe_fact_capabilities itself — you do not invoke it by name.
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04
If nothing happens, check the server is running and that Plumbline — a trust layer for LLM answers's identifier in your config matches the one above exactly.
Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs
Same tool, other clients
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.