Summary
This wraps the npm Registry API so Claude can search packages, fetch metadata, and pull version details without you leaving the conversation. No auth needed since it's hitting public npm endpoints. Handy when you're exploring dependencies, comparing package stats, or need to check what versions are available before updating a project. It's part of the Pipeworx gateway, which bundles 673+ data sources behind a single MCP connection. You can call tools directly or use the ask_pipeworx interface to query in plain English and let it route to the right endpoint. Runs over streamable HTTP, so setup is just dropping a URL into your MCP config.
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npm MCP — wraps the npm Registry API (free, no auth)
Part of Pipeworx — an MCP gateway connecting AI agents to 1683+ live data sources.
Tools
| Tool | Description |
|---|---|
search_packages | Search npm for packages by keyword. Returns package names, descriptions, latest versions, publish dates, and publishers. Use when discovering libraries for a task. |
get_package | Get full details for a specific package: version, description, dependencies, homepage, repository, and license. Use after search_packages to evaluate a candidate package. |
get_downloads | Fetch npm download counts for a package over a named period (last-day, last-week, last-month, last-year) or a custom date range like "2024-01-01:2024-06-30". Returns total downloads, start date, and end date. |
list_versions | List published versions of an npm package with publish dates, dist-tags (latest/next/beta), and deprecation notices — answers "what versions of exist", "when was last published", "is the latest version deprecated". Returns versions newest-first, plus the package created/last-modified timestamps. |
get_version_info | Get metadata for a SPECIFIC version (or dist-tag) of an npm package: dependencies, dev/peer dependencies, engines, license, tarball + integrity hash + unpacked size, and any deprecation notice. Use for "dependencies of @", pinned-version audits, or inspecting a particular release. Version accepts an exact version (e.g. "4.18.2"), a dist-tag (e.g. "latest", "next"), or omit for the latest. |
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"npm": {
"url": "https://gateway.pipeworx.io/npm/mcp"
}
}
}
What this endpoint actually serves
tools/list at https://gateway.pipeworx.io/npm/mcp returns the tools in the table
above plus the shared Pipeworx meta-tools — ask_pipeworx,
discover_tools, search_within, remember/recall and the rest of the
gateway-wide set. So the tool count you see is larger than this table: a
single-pack endpoint currently lists roughly 30 shared tools alongside the
pack's own. The connection's initialize response states its exact scope, and
is the authoritative answer for a given day.
This is deliberate, not multiplexing by accident. The meta-tools are what let a
scoped connection answer a question this pack does not cover — via
ask_pipeworx, which routes across the whole catalog — without you adding a
second MCP server. There is currently no way to mount a pack endpoint without
them; if the extra schemas cost you more context than the routing is worth,
connect to the full gateway once rather than to several pack endpoints.
Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}
Both URLs reach the same gateway and the same 1683+ data sources. The
only difference is which pack's tools are listed directly; ask_pipeworx
reaches all of them from either one.
No MCP client? Call it over HTTP
curl -X POST https://gateway.pipeworx.io/v1/tools/npm_search_packages \
-H 'Content-Type: application/json' \
-d '{"query":"http server framework"}'
No account needed for the first calls. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/npm_search_packages. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.
Standalone (no gateway account)
This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:
{
"mcpServers": {
"npm": {
"command": "npx",
"args": ["-y", "@pipeworx/mcp-npm"]
}
}
}
Or run it directly to confirm it starts:
npx -y @pipeworx/mcp-npm
It speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call
for only this pack's tools — none of the shared meta-tools the gateway
connection above adds. Same source, same tools, no ask_pipeworx routing.
Using with ask_pipeworx
Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:
ask_pipeworx({ question: "your question about Npm data" })
The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Featured
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →