x402-paycheck

MCP server · npm · ★ 1 · graded 2026-10-24Source linked

Check every x402 payment with Lumière PayCheck before your agent pays: trust grade, price, payout-wallet hijack and OFAC checks, team spend limits enforced by the SDK, and agent credentials sellers can verify.

No outside reports on file

x402-paycheck requires API keys or tokens; restrict its folder reach, network access, and credentials before installing.

Based on public adoption and transparency signals as of Oct 23, 2026. Our opinion, not a code audit or security guarantee.

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What it can access

Local filesNo local folder access notedLOW
Command executionNo shell command runner notedLOW
Network reachConnects to outside service APINOTED
CredentialsRequires API key or tokenREVIEW
Package sourcenpm (x402-paycheck)PUBLIC

Inferred from this listing’s public package details and description. Check the project’s source before installing.

Install

npx -y x402-paycheck

All setup options ↓

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Everything known

We found nothing about this project in the sources we read (last checked 2026-10-30). That does not mean it has no problems.

0 incidents · 0 advisories · 0 news articles · 0 community threads · checked 2026-10-30

Popularity grade: C (from public signals such as stars and downloads, not a code review). Graded 2026-10-24.

Sources we read: OSV, GitHub Advisory Database, CISA Known Exploited Vulnerabilities, 44 security news feeds and our incident library. Last checked 2026-10-30.

Check a specific version →

About X402 Paycheck

X402 Paycheck is an MCP server focused on General: Check every x402 payment with Lumière PayCheck before your agent pays: trust grade, price, payout-wallet hijack and OFAC checks, team spend limits enforced by the SDK, and agent credentials sellers can verify.

It is published on npm as x402-paycheck and hosted on GitHub at book0feli/lumiere-paycheck (1 GitHub stars, 360 weekly npm downloads, last repository push on 2026-10-23). Based on its public metadata, its operational scope includes: requires api key or token.

Setup

Check these steps against the project’s own instructions before running anything.

Run x402-paycheck with --ignore-scripts in claude_desktop_config.json or .cursor/mcp.json:

json

{
  "mcpServers": {
    "x402-paycheck": {
      "command": "npx",
      "args": ["-y", "--ignore-scripts", "x402-paycheck"]
    }
  }
}

Why this grade

CC — Moderate risk signals

Signal-based grade (2/7 points): listed in several sources, public source code. This reflects adoption and transparency, not a code review.

Popularity and upkeep

27/100

GitHub stars: 1
Weekly npm downloads: 360
Listing last refreshed: 2026-10-28

These are public popularity signals, not a maintenance check. Look at the repository’s commit history and open issues.

Risks to watch for

Credential & token exposure: Requires API keys or secrets in configuration. Store credentials in environment variables with read-only or minimum required scopes and rotate them regularly.
Dependency & version pinning: Distributed via npm (x402-paycheck). Pin an exact release version or commit SHA rather than floating tags so upstream updates are reviewed first.

How to lower the risk

Least-privilege permissions

Give it access only to the specific folders, accounts or projects it needs, never your whole drive or admin account.
Use a separate, limited API key or login just for this tool so you can switch it off without affecting anything else.

Network isolation

Run it on a work computer or sandbox account, not one holding personal or company-sensitive data.
If your IT team can, limit which websites and services it is allowed to contact.

Monitoring

Check its activity history or logs weekly at first, and look at what it changed or sent.
Turn on alerts for new logins or unusual usage on any account it connects to.

Red flags to watch for

It asks for more access than its job requires, or prompts you to paste passwords.
It suddenly updates with new owners, or starts contacting unfamiliar websites.

Questions

How do I install X402 Paycheck?

Run npx -y x402-paycheck in your terminal, or add the server entry to your claude_desktop_config.json or .cursor/mcp.json as shown in the Setup section on this page. Full setup docs and environment variables are in github.com/book0feli/lumiere-paycheck.

Are there security reports about X402 Paycheck?

No reports found for this package in our research (last checked 2026-10-30). X402 Paycheck currently holds Grade C (Moderate risk signals) based on public adoption and transparency signals. Key risk areas to watch include credential & token exposure:, dependency & version pinning:.

Is X402 Paycheck actively maintained?

X402 Paycheck has 1 GitHub stars and 360 weekly npm downloads, with its latest repository commit pushed on 2026-10-23. Our directory data was last refreshed on 2026-10-28. Check recent commit activity, release tags, and open issues at github.com/book0feli/lumiere-paycheck before pinning it in production.

What are alternatives to X402 Paycheck?

Compare X402 Paycheck side by side with similar MCP servers in the Related tools section on this page, or browse all MCP servers on AgentArmorHQ.

Maintain or use X402 Paycheck? Show its live grade in your GitHub README, docs site, or run a check from the terminal before you install.

AgentArmorHQ Risk Grade C for X402 Paycheck

GitHub README Markdown:

markdown

[![AgentArmorHQ Risk Grade for X402 Paycheck](https://agentarmorhq.com/api/badge/book0feli-lumiere-paycheck)](https://agentarmorhq.com/skills/book0feli-lumiere-paycheck)

HTML embed:

html

<a href="https://agentarmorhq.com/skills/book0feli-lumiere-paycheck"><img src="https://agentarmorhq.com/api/badge/book0feli-lumiere-paycheck" alt="AgentArmorHQ Risk Grade for X402 Paycheck" height="20" /></a>

Terminal check:

terminal

curl -fsSL https://agentarmorhq.com/api/cli | node --input-type=module - check "book0feli-lumiere-paycheck"

Share with your security lead

Need sign-off to use x402-paycheck? Copy this note for Slack, a ticket or a pull request.

### AgentArmorHQ Security Review Memo: x402-paycheck
- **Listing URL:** https://agentarmorhq.com/skills/book0feli-lumiere-paycheck
- **Type:** App connector
- **Risk Grade:** Grade C (Moderate risk signals)
- **Outside Security Advisories on File:** 0
- **Public Adoption:** 1 GitHub stars, 360 weekly npm downloads

#### Permission & Blast-Radius Signals
- **Local files:** No local folder access noted
- **Command execution:** No shell command runner noted
- **Network reach:** Connects to outside service API
- **Credentials:** Requires API key or token
- **Package source:** npm (x402-paycheck)

#### Recommended Hardened Setup
- **Command:** `npx -y --ignore-scripts x402-paycheck`
- **Controls:** Pin an exact version in `.mcp.json`, scope access to a single workspace folder, and use a least-privilege read-only token where supported.

_Based on public adoption and transparency signals as of Oct 23, 2026. Our opinion, not a code audit or security guarantee._

Key facts

Type: App connector
Publisher: book0feli
Source code: github.com/book0feli/lumiere-paycheck
Install command: npm install x402-paycheck
Est. context load: ~750 tokens / turn (~4 tool schemas, 0.38% of 200k context)
Popularity: 1 GitHub stars, 360 weekly npm downloads
Last updated: 2026-10-28
Last graded: 2026-10-24

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