Pay MCP

Name: Pay MCP
Author: pay-skill

by pay-skillversion 0.2.8i★ –iRuns on your computer

Registry nameio.github.pay-skill/pay-mcp

Install

Overview

Description from the maker (original English)

USDC payments for AI agents on Base — direct, tabs, x402 paywalls, discovery

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
You need to fill in: PAYSKILL_SIGNER_KEY

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).
You fill in yourself: PAYSKILL_SIGNER_KEY, PAY_NETWORK

Values marked secret are keys to your account. Never share them or paste them into a chat.

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": {
    "pay": {
      "command": "npx",
      "args": [
        "-y",
        "@pay-skill/mcp"
      ],
      "env": {
        "PAYSKILL_SIGNER_KEY": "your-value",
        "PAY_NETWORK": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add pay --env PAYSKILL_SIGNER_KEY=your-value --env PAY_NETWORK=your-value -- npx -y @pay-skill/mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "pay": {
      "command": "npx",
      "args": [
        "-y",
        "@pay-skill/mcp"
      ],
      "env": {
        "PAYSKILL_SIGNER_KEY": "your-value",
        "PAY_NETWORK": "your-value"
      }
    }
  }
}

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": {
    "pay": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@pay-skill/mcp"
      ],
      "env": {
        "PAYSKILL_SIGNER_KEY": "your-value",
        "PAY_NETWORK": "your-value"
      }
    }
  }
}

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.

Values you fill in

PAYSKILL_SIGNER_KEY secret env
Private key hex for importing an existing wallet (optional — generates new wallet if not set)
PAY_NETWORK env
Network to use: mainnet or testnet (default: mainnet)

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 pay-skill, 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 32688 servers in this category
Published to the registry more recently than 7% of the other 32688 servers in this category
Basic checks equal to or better than 100% of the other 32688 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 Pay 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?

You need to fill in: PAYSKILL_SIGNER_KEY

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 (0.2.8) reached the registry 7 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, 御府和田玉在售作品查询

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

Spec Driven Development

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Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

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

Runs in the cloud★ 211Updated 2 days ago

Install

御府和田玉在售作品查询

by 163yu.com

Live in-stock Hetian jade from Yufu, Shanghai: prices, monthly price guide, book a viewing.

Runs in the cloudUpdated today

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.

@pay-skill/mcp

MCP server for Pay -- the complete x402 payment stack for AI agents. USDC on Base.

Gives any MCP-compatible client (Claude Desktop, Cursor, VS Code, custom frameworks) the full power of Pay: direct payments, tabs, x402 paywalls, service discovery, and wallet management. No CLI binary needed.

Setup

Claude Desktop

Add to claude_desktop_config.json:

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

VS Code / Cursor

Add to .vscode/mcp.json:

"servers": { "pay": { "command": "npx", "args": ["-y", "@pay-skill/mcp"] } } }

Claude Code

claude mcp add pay -- npx -y @pay-skill/mcp

That's it. On first run, the server generates a wallet and stores it in the OS keychain (Windows Hello, macOS Keychain, Linux Secret Service). Subsequent runs load it automatically.

Configuration

Env Var	Required	Default	Description
`PAYSKILL_SIGNER_KEY`	No	—	Optional override. Raw hex key or `.enc` keystore password. Not needed for normal use.
`PAY_NETWORK`	No	`mainnet`	`mainnet` (Base) or `testnet` (Base Sepolia)

Key Resolution (checked in order)

OS keychain (default) — Loads from the OS credential store via keytar. On first run, a new keypair is generated and stored automatically.
Encrypted keystore — If ~/.pay/keys/default.enc exists, PAYSKILL_SIGNER_KEY is used as the decryption password.
Raw hex key — If PAYSKILL_SIGNER_KEY is a 64-char hex string, it's used directly. For dev/testing or importing an existing wallet.
Auto-generate — If none of the above, generates a new keypair and stores it in the OS keychain.

Diagnostic Check

Verify everything is configured correctly:

npx @pay-skill/mcp --check

Output:

pay-mcp diagnostic check

network: Base (chain 8453) api: https://pay-skill.com/api/v1 wallet: 0x1234... key: keychain server: OK (router: 0xABCD...) auth: OK (balance: $50.00)

All checks passed. MCP server is ready.

Tools (15)

Payments

Tool	Description
`pay_send`	Direct USDC payment ($1 min). Confirmation thresholds: <$10 auto, $10-100 plan, >$100 explicit.
`pay_request`	HTTP request with x402 auto-payment. Handles 402 detection, direct/tab settlement, price skepticism.

Tabs (metered accounts)

Tool	Description
`pay_tab_open`	Open pre-funded tab ($5 min, $50 recommended). Provider charges per-call.
`pay_tab_close`	Close tab. Returns distribution breakdown (provider 99%, fee 1%, agent remainder).
`pay_tab_charge`	Charge against open tab (provider only).
`pay_tab_topup`	Add funds to open tab (agent only).
`pay_tab_list`	List tabs with idle/low-balance flags.

Wallet

Tool	Description
`pay_status`	Balance, locked/available funds, actionable suggestions.
`pay_fund`	Generate 1-hour funding link (Coinbase Onramp or direct USDC).
`pay_withdraw`	Generate 1-hour withdrawal link.
`pay_mint`	Mint testnet USDC (Base Sepolia only).

Discovery & Webhooks

Tool	Description
`pay_discover`	Search paid API services by keyword/category.
`pay_webhook_register`	Register webhook for payment events (HMAC-signed).
`pay_webhook_list`	List registered webhooks.
`pay_webhook_delete`	Delete a webhook.

Resources (5)

URI	Description
`pay://wallet/status`	Balance, tabs, locked/available
`pay://wallet/tabs`	All open tabs
`pay://tab/{tab_id}`	Single tab detail
`pay://wallet/address`	Wallet address
`pay://network`	Network config + contract addresses

Prompts (3)

Prompt	Description
`pay-for-service`	Guided: discover service, evaluate pricing, make request
`review-tabs`	Review tabs, flag idle, suggest close/topup
`fund-wallet`	Generate fund link, explain deposit process

Development

git clone https://github.com/pay-skill/pay-mcp.git

cd pay-mcp npm install npm run build npm test # unit tests (mocked) npm run test:acceptance # testnet (requires PAYSKILL_TESTNET_KEY)

License

MIT

Part of Pay

Pay is the complete x402 payment stack -- gateway, facilitator, SDKs, CLI, and MCP server -- that lets AI agents pay for APIs with USDC on Base.

Documentation
Architecture
SDK -- Python + TypeScript
CLI -- Command-line tool
pay-gate -- x402 payment gateway
Protocol -- Smart contracts

Pay MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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

御府和田玉 在售作品查询

README from the maker

@pay-skill/mcp

Setup

Claude Desktop

VS Code / Cursor

Claude Code

Configuration

Key Resolution (checked in order)

Diagnostic Check

Tools (15)

Payments

Tabs (metered accounts)

Wallet

Discovery & Webhooks

Resources (5)

Prompts (3)

Development

License

Part of Pay

御府和田玉在售作品查询