MCP servers · npm · MCP server + skill
Connect Claude Code to npm
One line gives Claude Code your npm account as tools: 6 endpoints, read packages, publish, more, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.
Three steps
- Create a free 0n3 account and connect npm. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
- Ask Claude Code: whoami. Then: "Get a package in npm".
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"
The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.
What Claude Code can then do in npm
Read packages · Package metadata, versions, search and download counts2
Get a package
GET /{pkg}Publish a package
PUT /{pkg}Publish · Publish a package version (use the npm_publish_mcp_server app to build one)0
Publish a package version (use the npm_publish_mcp_server app to build one)
More · Everything else this app exposes.4
Whoami
GET /-/whoamiGet a version
GET /{pkg}/{version}Search
GET /-/v1/searchDownloads last week
GET /downloads/point/last-week/{pkg}npm in other AI clients
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