Toolcairn MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 79 installs a week from npm. Last commit 11 May 2026.
MCP server for tool discovery: find, compare, and verify tools across 35+ registries.
We read the source, 4 d ago · rules 995398eba69f
Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.
const child = spawn(cmd, args, { detached: true, stdio: 'ignore', shell: false });
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Today is the operative word: we check Toolcairn MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add toolcairn-mcp -- npx -y @neurynae/toolcairn-mcp
{
"mcpServers": {
"toolcairn-mcp": {
"command": "npx",
"args": [
"-y",
"@neurynae/toolcairn-mcp"
]
}
}
}
[mcp_servers.toolcairn-mcp]
command = "npx"
args = ["-y", "@neurynae/toolcairn-mcp"]
{
"mcpServers": {
"toolcairn-mcp": {
"command": "npx",
"args": [
"-y",
"@neurynae/toolcairn-mcp"
]
}
}
}
{
"servers": {
"toolcairn-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@neurynae/toolcairn-mcp"
]
}
}
}
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