Npmpreflight

Name: Npmpreflight
Author: CloudCorpRecords

by CloudCorpRecordsversion 0.1.0i★ 0iRuns on your computer

Registry nameio.github.CloudCorpRecords/npmpreflight

How to install

Overview

Description from the maker (original English)

Pre-publish npm pack auditor: shipped files, size, secret-pattern leaks, missing fields.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Docs, sheets & office work

Install

Pick the AI app you use, then copy the settings.

Passed 3/3 checks · Runs on your computer

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "npmpreflight": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/npmpreflight",
        "mcp"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use Npmpreflight and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Npmpreflight or shows a Npmpreflight tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Npmpreflight yet

Npmpreflight runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Npmpreflight

Steps for Claude →Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Node.js on your computer first (one time)
Steps for Cursor →Install Node.js on your computer first (one time)
Steps for VS Code →Install Node.js on your computer first (one time)

B · Others in Docs, sheets & office work that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Puter MCP✓ ChatGPT
LMCP✓ ChatGPT
Keeper.sh✓ ChatGPT

Works with Claude Code, with some setup first

Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add npmpreflight -- npx -y @reneturcios/npmpreflight mcp

Done

Type /mcp in Claude Code
You should see Npmpreflight listed as connected
Done
Try it
Use Npmpreflight and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Npmpreflight or shows a Npmpreflight tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Npmpreflight and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Npmpreflight or shows a Npmpreflight tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Npmpreflight and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Npmpreflight or shows a Npmpreflight tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Npmpreflight💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add npmpreflight -- npx -y @reneturcios/npmpreflight mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "npmpreflight": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/npmpreflight",
        "mcp"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "npmpreflight": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/npmpreflight",
        "mcp"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "npmpreflight": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/npmpreflight",
        "mcp"
      ]
    }
  }
}

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 0
Downloads per weeki: 56/wk
Licence i: MIT
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.1.0
Categoryi: Docs, sheets & office work
Published to registryi: Oct 25, 2026
Code last changedi: Oct 25, 2026
Maker: CloudCorpRecords
Packages: npm: @reneturcios/npmpreflight
oci: ghcr.io/cloudcorprecords/npmpreflight:0.1.0
Repo: CloudCorpRecords/npmpreflight
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 11, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account CloudCorpRecords, which owns the repo
✓ Pass
Still maintained
Code last changed 17 days ago
✓ Pass
Has a licence
Uses MIT
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Docs, sheets & office worki

More stars than 0% of the other 3748 servers in this category
Published to the registry more recently than 65% of the other 3748 servers in this category
Basic checks equal to or better than 100% of the other 3748 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Npmpreflight safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed 17 days ago, and the latest version (0.1.0) reached the registry 17 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js, Docker on your computer.

What can I use instead?

In the same category: Puter MCP, XcodeBuildMCP, XcodeBuildMCP

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Puter MCP

Puter MCP enables AI tools to interact with Puter: manage files, websites, workers, and more

by HeyPuterWidely used★ 44.1KUpdated 5 months ago

Runs in the cloud✓ puter.com

Install

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by getsentryWidely used↓ 130.5K/wk★ 6.6KUpdated 4 months ago

Runs on your computer✓ xcodebuildmcp.com

Install

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by cameroncookeWidely used↓ 130.5K/wk★ 6.6KUpdated 14 months ago

Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

npmpreflight

Audit a package directory before npm publish, while a bad publish is still cheap to undo.

npmpreflight resolves the file set your package would actually ship, scans the shipped files for secret patterns, totals the size, and checks package.json for the fields and entry points a publish depends on. It answers the questions that are embarrassing to discover after a release: is a credential sitting in a shipped file, does the bin target exist in the tarball, is the license field set, and is a scoped package about to publish as restricted.

Install

Run it without installing:

npx @reneturcios/npmpreflight check .

Or install it globally:

npm install -g @reneturcios/npmpreflight

npmpreflight check .

Requires Node 20 or newer.

CLI usage

npmpreflight check [path] [--json]

npmpreflight mcp npmpreflight --version

check [path] audits the package directory at path (default: the current directory) and prints a human readable report. Add --json for the machine readable report.
mcp starts the MCP server over stdio (see below).
--version prints the version.

Exit codes: 0 when the verdict is READY, 1 for any other verdict, 2 for a usage error or an unreadable or invalid package.json, and 141 when the reader closed the output pipe early.

Example output:

npmpreflight check .: FIX-FIRST

files: 4, bytes: 603, findings: 2 (high: 2, medium: 0, low: 0, info: 0) summary: 4 shipped file(s), 603 byte(s), 2 finding(s) (2 high, 0 medium, 0 low, 0 info). High-severity findings must be fixed before publishing. [HIGH] SECRET-LEAK src/index.js:2 Shipped file matches the secret pattern private-key-block. Remove the credential from the package and rotate it if it was ever real. (evidence: private-key-block) [HIGH] SECRET-LEAK src/index.js:3 Shipped file matches the secret pattern github-pat-classic. Remove the credential from the package and rotate it if it was ever real. (evidence: github-pat-classic) FIX-FIRST: resolve the high-severity findings before publishing.

Findings never include the matched secret text. The evidence for a secret finding is the pattern id only, plus the file and line, so a report is safe to paste into an issue or a CI log.

MCP

The same audit is available as an MCP tool over stdio:

Tool: preflight_package
Input: path, the package directory to check
Output: the JSON report, identical to check --json

Start it with npmpreflight mcp, or configure an MCP client to run npx @reneturcios/npmpreflight mcp. The server is also published as an OCI image and listed in server.json under the name io.github.CloudCorpRecords/npmpreflight.

Checks

Rule	Severity	What it flags
MISSING-FIELD	high	`package.json` is missing one of `name`, `version`, `license`, or `description` (one finding per missing field).
BIN-MISSING	high	A `bin` path in `package.json` is not in the shipped file set.
MAIN-MISSING	high	The `main` entry point is not in the shipped file set.
SECRET-LEAK	high	A shipped text file matches a secret pattern: a private key block header, an AWS access key id shape (`AKIA` plus 16 characters), a classic GitHub token shape (`ghp_` plus 36 or more characters), a fine grained GitHub token shape (`github_pat_` prefix), an `sk-` API key shape, or a generic `api_key` style assignment with a long quoted value. Evidence is the pattern id only.
OVERSIZE	medium	Total shipped size over 10 MiB, or any single shipped file over 1 MiB (one finding per oversize file).
SCOPED-NO-PUBLISHCONFIG	medium	The package name is scoped (starts with `@`) and `publishConfig.access` is not `public`.
NO-README	low	No README file is in the shipped set.
NO-ENGINES	info	`package.json` declares no `engines` range.

Every report counts the shipped files and their total bytes, plus the finding totals by severity.

Verdict

READY when there are no high severity findings. Medium, low, and info findings are reported but do not block the verdict.
FIX-FIRST when at least one high severity finding exists.

How the shipped file set is resolved

If package.json has a files array, those paths are included: files are added directly and directories are walked recursively. package.json, README, and LICENSE are always included when present, whether or not they are listed, matching npm.
If there is no files array, everything in the directory is included except node_modules, .git, and paths matched by .npmignore when one is present. The always included files above are still included even if an ignore rule would match them.
The walk is capped at 5000 shipped files. When the cap is reached the report records it in its counts (truncated: 1, with filesSeen and maxFiles) and the render notes that the remaining files were not scanned.

Limits

Read these before trusting a clean verdict:

The file set is a static resolution, not a byte-exact npm pack. npm applies more rules (its own always excluded files, lifecycle generated files, and publish time behaviour) that a static pass does not reproduce. Treat npmpreflight as a preflight check, then confirm a release with npm pack --dry-run.
.npmignore support is a simple subset: blank lines, # comments, plain lines (a file name at any depth, or an exact relative path), and directory patterns ending in /. Globs, negations, and character classes in .npmignore are not supported and such lines will not match the way npm would match them.
files entries support literal files, literal directories, simple * and ** globs, and ! negations of those. Anything more exotic is resolved literally and may differ from npm.
Secret scanning reads text files only. A file whose scanned head contains a NUL byte is treated as binary and skipped. Only the first 512 KiB of each file is scanned, so a secret past that offset in a large file will not be found. Patterns are shapes, not proof: a match can be a test fixture or an example, and a real credential in an unrecognized shape will not match.
Symlinks are not followed and are not shipped.
Output is deterministic: findings are sorted, counts are stable, and no timestamps are emitted.

Development

npm install

npm run build npm test

License

MIT

Npmpreflight

Overview

What you can do with it

Install

Install Node.js

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Docs, sheets & office worki

Common questions

Alternatives

Puter MCP

XcodeBuildMCP

XcodeBuildMCP

README from the maker

npmpreflight

Install

CLI usage

MCP

Checks

Verdict

How the shipped file set is resolved

Limits

Development

License