0n3
MCP servers · developer

npm MCP server

The npm registry — who you are, package details and downloads, search, and publishing packages (including MCP servers). Hosted by 0n3: 6 endpoints your AI can call with your own npm account, from Claude, ChatGPT, Cursor, Claude Code, Codex or Gemini CLI. One sign-in, one key per AI, a receipt for every call.

Connect npmInstall into your AIWatch it work

6 endpoints3 categoriesauth: api_keyhosted

What your AI can do with npm

Read packages · Package metadata, versions, search and download counts2
Get a packageGET /{pkg}
Publish a packagePUT /{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
WhoamiGET /-/whoami
Get a versionGET /{pkg}/{version}
SearchGET /-/v1/search
Downloads last weekGET /downloads/point/last-week/{pkg}

Install in three steps

  1. Create a free account at 0n3.app and connect npm: paste a key or sign in through a door. It lands in your vault, encrypted.
  2. Open 0n3.app/install, pick your AI. A key is made for that AI alone; copy the line it gives you.
  3. Ask your AI: whoami. It answers with your connected services. Then ask it to 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>"

Connect npm to

Claude Code + npmMCP server + skillClaude (desktop & claude.ai) + npmconnectorChatGPT + npmconnector · GPT actionCodex CLI + npmMCP serverGemini CLI + npmMCP serverCursor + npmMCP serverVS Code (Copilot) + npmMCP serverWindsurf + npmMCP server

More developer MCP servers

Google Apps Script8 endpoints

Questions

What can an AI do with the npm MCP server?

6 things: read packages, publish, more. Every call runs with your own npm connection and lands on a receipt.

Do I need to run anything on my computer?

No. 0n3 is hosted. Connect npm once, install 0n3 into your AI with one line, done.

Where does my npm key go?

Into your 0n3 vault, encrypted, one record per connection. The AI never sees it.