MCP X402 Accept

Name: MCP X402 Accept
Author: CryptoAPIs-io

作者：CryptoAPIs-io版本 0.1.1i★ –i在你的电脑上运行

注册名称io.github.CryptoAPIs-io/mcp-x402-accept

安装

概览

作者提供的说明（英文原文）

Self-hosted MCP proxy that puts an x402 paywall in front of an existing MCP server

PopNx MCP 的三大支柱

这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。

用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
我们的基础检查i1 项中通过 1 项依据公开信息检查；尚未扫描代码
使用情况i非常新↓ 68/周 · ★ –

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

连接方式: 在你的电脑上运行
传输方式: stdio
分类: 其他

安装

选择你使用的 AI 应用，然后复制设置。

安装之前

基础检查：1 项中通过 1 项
在你的电脑上运行，拥有你的用户账户的权限（文件、网络、应用）。
注册中心没有列出需要填写的密钥。

你需要

npm已安装 Node.js（用于 npx 命令）

你用的是哪个应用？

ClaudeClaude CodeCursorVS CodeChatGPT

在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。

打开 Claude Desktop → Settings → Developer → Edit Config，把下面的内容粘贴到 claude_desktop_config.json

{
  "mcpServers": {
    "x402-accept": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept"
      ]
    }
  }
}

在终端中运行这条命令

claude mcp add x402-accept -- npx -y @cryptoapis-io/mcp-x402-accept

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

{
  "mcpServers": {
    "x402-accept": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept"
      ]
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

{
  "servers": {
    "x402-accept": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept"
      ]
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

这个服务器在你的电脑上运行，而 ChatGPT 只能连接互联网上的服务器。请选择其他应用。

你的选择通过 Cookie 保存在这台设备上，无需账户。

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。

它能做什么

它在你的电脑上运行；安装后，工具列表会显示在你的 AI 应用中。

基础检查i

我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月9日

✓ 通过
作者与仓库一致
注册名称已通过 GitHub 账户 CryptoAPIs-io 验证，该账户拥有此仓库
… 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
… 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
– 不适用
端点有响应
它在你的电脑上运行，没有互联网端点
– 不适用
使用 OAuth 登录
在你的电脑上运行，改用本地设置
… 尚未检查
工具描述中没有隐藏指令
它在你的电脑上运行；我们只能读取互联网端点的工具列表

与“其他”中的其他服务器比较i

星标数多于此分类中其他 18694 个服务器的 0%
发布到注册中心的时间比此分类中其他 18694 个服务器的 17% 更新
基础检查结果等于或优于此分类中其他 18694 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。

常见问题

MCP X402 Accept 安全吗？

它在 1 项适用的基础检查中通过了 1 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。

它需要哪些密钥或代码？

注册中心没有列出必需的密钥，不过有些服务器会在首次使用时要求你登录。

它在我的电脑上运行还是在云端？

它在你的电脑上运行。你的 AI 应用会在需要时启动它，数据不会经过作者的服务器（除非它自己调用在线服务）。

它还在维护吗？

GitHub 仓库最后更新于–，最新版本（0.1.1）于3个月前进入注册中心。

哪些应用可以使用它？

支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。你的电脑上还需要有 Node.js。

有什么可以替代它？

同一分类中有：Spec Driven Development, Remote Desktop Commander, Toggl 2.0

替代选择

同一分类中其他作者的服务器，按星标数排序。

如何看卡片：↓ 每周下载量i★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Spec Driven Development

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

作者：formulahendry起步阶段↓ 66/周★ 44014个月前更新

在你的电脑上运行

安装

Remote Desktop Commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

作者：desktop-commander正在增长★ 2114天前更新

在云端运行✓ desktopcommander.app

安装

Toggl 2.0

Toggl 2.0 MCP server for tasks, projects, time entries, and workspace operations.

作者：toggl广泛使用↓ 2.4万/周今天更新

电脑或云端

安装

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

@cryptoapis-io/mcp-x402-accept

Put an x402 paywall in front of an MCP server you already run — charge AI agents per tool call without changing a line of that server's code.

agent  →  mcp-x402-accept (your process)  →  your existing MCP server

The proxy is an MCP server to the agent and an MCP client to yours. It mirrors every tool your server exposes; the ones you price are paywalled, the rest pass through free.

When to use this (and when not to)

Your situation	Use
You can edit your MCP server (Node/TS)	`x402-merchant-sdk/mcp` — three lines around your handler, nothing in the data path
You cannot — third-party, closed-source, or not Node	this proxy

If you can edit your server, do that instead. It is simpler and strictly fewer moving parts. This package exists for the case where that is not an option.

Why self-hosted only

You run this process. We never do, and we do not offer a hosted version.

That is a deliberate product decision, not a default you can flip. A proxy sits between an agent and your server, so a hosted one would mean CryptoAPIs holding your upstream server's credentials, sitting in the cleartext path of your tool arguments and results, and owing you uptime on your own revenue. For a merchant whose product *is* the data flowing through those calls, that is not a reasonable thing to ask. Self-hosting removes the question rather than answering it.

What that guarantees, structurally:

Tool arguments and results are opaque to the proxy. It reads the tool *name* (is this priced?) and _meta["x402/payment"] (is it paid for?) — nothing else. They are never parsed, logged, buffered, or cached.
Your upstream credentials are your own env vars, in your own process.
The only outbound calls are to the CryptoAPIs facilitator, to /verify and /settle the payment itself.

Install

npm install -g @cryptoapis-io/mcp-x402-accept

Configure

"upstream": { "transport": "stdio", "command": "node", "args": ["/path/to/your-mcp-server.js"], "env": { "YOUR_UPSTREAM_TOKEN": "${YOUR_UPSTREAM_TOKEN}" } },

"apiKey": "${CRYPTOAPIS_API_KEY}", "payTo": "0xYourReceivingAddress",

// Only these are charged for. Everything else your server exposes stays FREE. "pricedTools": { "premium_data": { "network": "eip155:8453", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "10000" } } }

${VAR} reads from the environment, so the config file itself holds no secrets and is safe to commit.

amount is in atomic units — USDC has 6 decimals, so "10000" is $0.01. Getting this wrong by 10^6 is the easiest mistake here.

An HTTP upstream instead of stdio:

"upstream": {

"transport": "http", "url": "https://your-server.example.com/mcp", "headers": { "Authorization": "Bearer ${YOUR_UPSTREAM_TOKEN}" } }

To accept several assets or networks for one tool, pass an array — the agent picks one. Offer only what GET https://ai.cryptoapis.io/x402/merchant/supported lists (public, no key); anything else is advertised and then rejected at /verify.

Run

cryptoapis-mcp-x402-accept --config ./x402-accept.config.json

Then point agents at the proxy instead of your server. In Claude Code:

claude mcp add my-paid-tools -- cryptoapis-mcp-x402-accept --config /abs/path/to/config.json

Everything is validated at boot — the config, the upstream connection, and whether the tools you priced actually exist upstream. A typo'd tool name is a hard failure, not a silent revenue hole: the alternative is believing a tool is paywalled while it quietly serves for free.

What an agent sees

Step	Result
Unpaid call to a priced tool	`isError: true` carrying `PaymentRequired` in both `structuredContent` and `content[0].text`
Agent pays	Signs locally, retries with the payload in `_meta["x402/payment"]` — raw JSON, no base64
Paid call	Your tool's real result, with the receipt in `_meta["x402/payment-response"]`
Call to an unpriced tool	Forwarded, free, unchanged

Your server is never called until payment has settled. The proxy charges and then forwards — it does not forward and then bill. An unpaid call cannot reach your server at all, so it cannot be made to do the work for free.

Priced tools advertise [paid: x402] in their description so an agent knows the cost *before* calling. An agent that discovers a price only by being refused has already wasted a round-trip.

Paying it

Agents pay with @cryptoapis-io/mcp-x402-pay or, in code, @cryptoapis-io/x402-buyer-sdk/mcp.

Notes

Requires a CryptoAPIs API key with the `X402_FACILITATOR` feature.
"settle": false verifies without settling — useful while wiring up, but advisory only: the buyer proved they *could* pay, not that they did. Never ship it.
Test end-to-end on Base Sepolia (eip155:84532) before charging real money.
Implements the x402 v2 MCP transport (spec), sharing one implementation with the merchant SDK — a spec fix lands in both.