SERVER

x402check

Rank #2,840

io.github.caiovicentino/x402check

Risk-check counterparties before an AI agent pays; pay x402 resources only after a verified allow

3 versions

13 GitHub stars

by caiovicentino (7 servers)View repository ↗

Listed & last published

Sep 30, 2026

PURPOSE

What you can do with x402check

x402check is a Model Context Protocol (MCP) server published by caiovicentino. It ranks #2,840 of 144,396 active servers on MCP Toplist, and its repository has 13 GitHub stars. x402check is listed on Official MCP, with 3 tracked versions. It was first listed on Sep 30, 2026 and most recently updated on Sep 30, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What x402check can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using x402check

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by the Official MCP Registry, last synced Oct 16, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

X402CHECK_CREDIT_TOKEN · optional
X402CHECK_PAYER_KEY · optional
X402CHECK_BUDGET_USD · optional
X402CHECK_PINNED_KEYS · optional
X402CHECK_MAX_PAYMENT_USD · optional

INSTALLATION AND FIRST TASK

Connect x402check and confirm it works

npm package

claude mcp add x402check -e "X402CHECK_CREDIT_TOKEN=<your X402CHECK_CREDIT_TOKEN>" -e "X402CHECK_PAYER_KEY=<your X402CHECK_PAYER_KEY>" -e "X402CHECK_BUDGET_USD=<your X402CHECK_BUDGET_USD>" -e "X402CHECK_PINNED_KEYS=<your X402CHECK_PINNED_KEYS>" -e "X402CHECK_MAX_PAYMENT_USD=<your X402CHECK_MAX_PAYMENT_USD>" -- npx -y @x402check/mcp

Replace each placeholder with your own value before saving.

npm package

[mcp_servers.x402check]
command = "npx"
args = ["-y", "@x402check/mcp"]

[mcp_servers.x402check.env]
X402CHECK_CREDIT_TOKEN = "<your X402CHECK_CREDIT_TOKEN>"
X402CHECK_PAYER_KEY = "<your X402CHECK_PAYER_KEY>"
X402CHECK_BUDGET_USD = "<your X402CHECK_BUDGET_USD>"
X402CHECK_PINNED_KEYS = "<your X402CHECK_PINNED_KEYS>"
X402CHECK_MAX_PAYMENT_USD = "<your X402CHECK_MAX_PAYMENT_USD>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "x402check": {
      "command": "npx",
      "args": [
        "-y",
        "@x402check/mcp"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "<your X402CHECK_CREDIT_TOKEN>",
        "X402CHECK_PAYER_KEY": "<your X402CHECK_PAYER_KEY>",
        "X402CHECK_BUDGET_USD": "<your X402CHECK_BUDGET_USD>",
        "X402CHECK_PINNED_KEYS": "<your X402CHECK_PINNED_KEYS>",
        "X402CHECK_MAX_PAYMENT_USD": "<your X402CHECK_MAX_PAYMENT_USD>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "x402check": {
      "command": "npx",
      "args": [
        "-y",
        "@x402check/mcp"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "<your X402CHECK_CREDIT_TOKEN>",
        "X402CHECK_PAYER_KEY": "<your X402CHECK_PAYER_KEY>",
        "X402CHECK_BUDGET_USD": "<your X402CHECK_BUDGET_USD>",
        "X402CHECK_PINNED_KEYS": "<your X402CHECK_PINNED_KEYS>",
        "X402CHECK_MAX_PAYMENT_USD": "<your X402CHECK_MAX_PAYMENT_USD>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "x402check": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@x402check/mcp"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "<your X402CHECK_CREDIT_TOKEN>",
        "X402CHECK_PAYER_KEY": "<your X402CHECK_PAYER_KEY>",
        "X402CHECK_BUDGET_USD": "<your X402CHECK_BUDGET_USD>",
        "X402CHECK_PINNED_KEYS": "<your X402CHECK_PINNED_KEYS>",
        "X402CHECK_MAX_PAYMENT_USD": "<your X402CHECK_MAX_PAYMENT_USD>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "x402check": {
      "command": "npx",
      "args": [
        "-y",
        "@x402check/mcp"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "<your X402CHECK_CREDIT_TOKEN>",
        "X402CHECK_PAYER_KEY": "<your X402CHECK_PAYER_KEY>",
        "X402CHECK_BUDGET_USD": "<your X402CHECK_BUDGET_USD>",
        "X402CHECK_PINNED_KEYS": "<your X402CHECK_PINNED_KEYS>",
        "X402CHECK_MAX_PAYMENT_USD": "<your X402CHECK_MAX_PAYMENT_USD>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "x402check": {
      "command": "npx",
      "args": [
        "-y",
        "@x402check/mcp"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "<your X402CHECK_CREDIT_TOKEN>",
        "X402CHECK_PAYER_KEY": "<your X402CHECK_PAYER_KEY>",
        "X402CHECK_BUDGET_USD": "<your X402CHECK_BUDGET_USD>",
        "X402CHECK_PINNED_KEYS": "<your X402CHECK_PINNED_KEYS>",
        "X402CHECK_MAX_PAYMENT_USD": "<your X402CHECK_MAX_PAYMENT_USD>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by caiovicentino

View all caiovicentino servers →

No task-specific alternatives are catalogued for x402checkyet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Sep 30, 2026
Latest version published: Sep 30, 2026
Version history: 3 versions tracked (below)
Requirements evidence: Declared by the Official MCP Registry, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Sep 30, 2026

Registry sightings

Official MCP ↗listed since Oct 1, 2026 · still listed

Do you maintain x402check? to correct or enrich this profile.

VERSIONS

Available versions (3)

Version	Published
0.3.0	Sep 30, 2026
0.2.0	Sep 30, 2026
0.1.0	Sep 30, 2026

STANDING

#2,840of 144,396 active serversTop 5%

Ranks ahead of 141,556 of 144,396 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.caiovicentino%2Fx402check.svg)](https://mcptoplist.com/server/io.github.caiovicentino%2Fx402check)

HTML

<a href="https://mcptoplist.com/server/io.github.caiovicentino%2Fx402check"><img src="https://mcptoplist.com/badge/io.github.caiovicentino%2Fx402check.svg" alt="MCP Toplist: Top 5% of 144,396" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains x402check?: x402check is maintained by caiovicentino, which publishes 7 MCP servers (5 total versions) tracked on MCP Toplist.
Is x402check listed on the Official MCP Registry?: Yes — x402check is listed on the Official MCP Registry.
How many versions does x402check have?: MCP Toplist tracks 3 versions of x402check, most recently published on Sep 30, 2026.
Where can I find the source code for x402check?: The source code for x402check is hosted at github.com/caiovicentino/jev-risk-check-provider.

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