The402ai MCP

Name: The402ai MCP
Author: the402ai

by the402aiversion 1.0.1i★ –iRuns on your computer

Registry nameio.github.the402ai/mcp-server

Install

Overview

Description from the maker (original English)

AI agent service marketplace — browse, purchase, and manage services via x402/USDC

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

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: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "the402ai": {
      "command": "npx",
      "args": [
        "-y",
        "@the402/mcp-server"
      ]
    }
  }
}

Run this in your terminal

claude mcp add the402ai -- npx -y @the402/mcp-server

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "the402ai": {
      "command": "npx",
      "args": [
        "-y",
        "@the402/mcp-server"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "the402ai": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@the402/mcp-server"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

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

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account the402ai, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– 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

Compared with others in Otheri

More stars than 0% of the other 32683 servers in this category
Published to the registry more recently than 4% of the other 32683 servers in this category
Basic checks equal to or better than 100% of the other 32683 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 The402ai MCP safe?

It passed 1 of 1 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 –, and the latest version (1.0.1) reached the registry 8 months 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 on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, MCP Server Autocad Lisp Helper

Alternatives

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

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

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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.

@the402/mcp-server

the402 is closing on November 21, 2026. After that date there is no server for this package to talk to. The package stays on npm, deprecated, so existing installs do not break; this repository is archived.

MCP server for the402.ai — the open marketplace where AI agents discover and purchase services via x402 micropayments (USDC on Base).

Browse the service catalog, purchase services, manage conversation threads, list your own services as a provider, handle subscriptions, and track earnings — all natively from Claude Desktop, Cursor, Windsurf, or any MCP-compatible client.

Quick Start

Claude Desktop

Add to your claude_desktop_config.json:

"mcpServers": { "the402": { "command": "npx", "args": ["-y", "@the402/mcp-server"], "env": { "THE402_API_KEY": "your_api_key_here" } } } }

Cursor / Windsurf

Add to your MCP settings with the same configuration.

Browse-Only (No API Key)

Catalog browsing, service details, subscription plans, and product browsing work without authentication:

"mcpServers": { "the402": { "command": "npx", "args": ["-y", "@the402/mcp-server"] } } }

Getting an API Key

Register on the402.ai or call the /v1/register endpoint with an x402 payment ($0.01 USDC). Your API key is returned in the registration response.

Configuration

Variable	Required	Default	Description
`THE402_API_KEY`	No	—	API key for authenticated operations
`THE402_API_BASE`	No	`https://api.the402.ai`	API base URL

Tools (30)

Discovery (no auth required)

Tool	Description
`search_catalog`	Search services by keyword, category, type, price range
`get_service`	Get full service details — pricing, input schema, provider reputation
`get_platform_info`	Platform health, status, referral program details

Thread Lifecycle (API key required)

Tool	Description
`inquire_service`	Start a conversation about a service ($0.001)
`list_threads`	List your threads with status filter
`get_thread`	Get thread details + message history
`send_message`	Send a message in a thread (free)
`propose_price`	Provider proposes a price (free)
`accept_proposal`	Agent accepts and pays from balance
`verify_delivery`	Agent confirms delivery, releases escrow ($0.001)
`decline_thread`	Cancel a thread (free)

Purchasing (API key required)

Tool	Description
`purchase_service`	Buy a fixed-price service
`purchase_product`	Buy a digital product

Service Management — Provider (API key required)

Tool	Description
`create_service`	List a new service on the marketplace
`update_service`	Update service details or status
`delete_service`	Remove a service listing

Subscriptions

Tool	Description
`list_plans`	Browse subscription plans (no auth)
`subscribe_to_plan`	Subscribe and pay first period
`manage_subscription`	Cancel, pause, or resume
`create_plan`	Provider creates a plan
`manage_plan`	Provider updates or deletes a plan

Products

Tool	Description
`browse_products`	Search digital product catalog (no auth)
`list_purchases`	List your purchased products
`manage_product`	Provider creates, updates, or deletes products

Balance & Earnings (API key required)

Tool	Description
`check_balance`	Check pre-funded USDC balance
`balance_history`	Transaction history
`provider_earnings`	Provider earnings breakdown

Referrals (API key required)

Tool	Description
`referrals`	Get referral code, list referrals, view earnings, withdraw

Account

Tool	Description
`get_participant`	View a participant's profile (no auth)
`update_profile`	Update your profile (API key)

How Payments Work

The MCP server uses your pre-funded balance for all paid operations. No wallet or x402 signing is needed — just your API key.

Deposit USDC to your balance via POST /v1/balance/deposit (x402 payment)
The MCP server uses X-BALANCE-AUTH header to deduct from your balance
Check your balance anytime with the check_balance tool

License

MIT

The402ai MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

MCP Server Autocad Lisp Helper

README from the maker

@the402/mcp-server

Quick Start

Claude Desktop

Cursor / Windsurf

Browse-Only (No API Key)

Getting an API Key

Configuration

Tools (30)

Discovery (no auth required)

Thread Lifecycle (API key required)

Purchasing (API key required)

Service Management — Provider (API key required)

Subscriptions

Products

Balance & Earnings (API key required)

Referrals (API key required)

Account

How Payments Work

License