MCP servers · npm · connector · GPT action
Connect ChatGPT to npm
One line gives ChatGPT 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 ChatGPT'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 ChatGPT. A custom connector in Developer mode, or an Action on a custom GPT from the OpenAPI spec.
- Ask ChatGPT: whoami. Then: "Get a package in npm".
Custom connector (needs Developer mode)
- Settings → Connectors (or Apps) → Advanced → Developer mode on
- Create → name 0n3 · MCP server URL https://0n3.app/mcp · Authentication: OAuth
- Finish the sign-in with your 0n account
- Enable the connector in a chat and ask: "whoami"
ChatGPT connectors cannot send a static header, so 0n3 signs you in through its OAuth door (dynamic client registration is on).
The line above carries a placeholder; 0n3.app/install mints a real key named for ChatGPT and fills it in.
What ChatGPT 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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