x402 Seller MCP Server

by entreprisedaney33-rgb Your server? Claim it

local only

x402 Seller runs on your own machine — the client starts it, so there is no endpoint to ping. 22 installs a week from npm. Last commit 5 Sep 2026.

Pay-per-call MCP tools (crypto/DeFi data, web reading, AI tasks) in USDC over x402 on Base.

Installs per day peak 20 · avg 8 · +12% w/w

a month agotoday

Installs / week

npm · x402-seller-mcp

Stars

0 open issues

5 Sep 2026

Last commit

4 releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check x402 Seller every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402-seller-mcp -- npx -y x402-seller-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "x402-seller-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402-seller-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.x402-seller-mcp]
command = "npx"
args = ["-y", "x402-seller-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "x402-seller-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402-seller-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "x402-seller-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "x402-seller-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: BUYER_PRIVATE_KEY (EVM private key (0x...) of a throwaway wallet funded with a small amount of USDC on Base. Leave unset for explain-only mode (tool calls describe the 402 payment challenge instead of paying)), X402_ORIGIN (Which x402-compatible server to expose as MCP tools).

Alternatives to x402 Seller

same job, measured the same way

Agent Web Reader

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Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

3 tools answering

Webbersites X402 Data API

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45 pay-per-call AI agent tools: scraping, SEO, crypto data, lint, agent memory. x402 USDC on Base.

78 tools answering

Agent Data API

by ptrgit1

19 pay-per-call data tools for AI agents: crypto/DeFi, web, PDF, FX, weather, DNS. x402 on Base.

41 installs/wk local only

Textokit MCP

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17 pay-per-call x402 tools on Base: web reader, FX/crypto rates, Argentine data. Remote or npx.

40 installs/wk 21 tools answering

santyvv-data — market & on-chain data

by santyvv

Market and on-chain crypto data for AI agents. Pay per call in USDC on Base (x402).

9 installs/wk 8 tools answering

Fastx402

by tusk80

60+ pay-per-call tools for agents (data, dates, QR, crypto, web), paid in USDC via x402.

634 installs/wk local only

Agent Margin Router

by agentmarginrouter

38 x402 pay-per-call tools for AI agents (USDC/USDT on Base): web, crypto, on-chain, geo, packages

53 tools answering

Kerdos X402 MCP

by singlishman

Crypto market intelligence MCP — pay-per-tool-call in USDC on Base via the x402 protocol.

22 installs/wk local only

x402 Seller — questions

Answers built from our own checks of this server.

Why is there no uptime for x402 Seller?

x402 Seller runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package x402-seller-mcp was installed 22 times last week.

How do I connect x402 Seller?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls x402-seller-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use x402 Seller?

The npm package x402-seller-mcp was installed 22 times in the last week. Week over week that is +12%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is x402 Seller open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.