Yes, List Smith is free to use.

How do I install List Smith?

List Smith is a local plugin. Install it using PyPI package: list-smith-mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is List Smith safe to use?

List Smith was flagged by MCP Marketplace's security scan, scoring 4.5/10 (high risk). It has 5 high or critical findings to review. Review the security report on this page carefully before installing it.

What credentials does List Smith need?

List Smith requires the following credentials or environment variables: AGENT_PRIVATE_KEY, AGENT_KEY_FILE, LIST_SMITH_URL, LIST_SMITH_GRADE_MAX_AMOUNT_UNITS, LIST_SMITH_FIX_MAX_AMOUNT_UNITS. You can find setup instructions on the server detail page.

What AI apps work with List Smith?

List Smith uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

Back to Browse

List Smith MCP Server

by QuincyGB

Developer ToolsUse Caution4.5MCP RegistryLocal

Free

Server data from the Official MCP Registry

MCP server for ListSmith — x402 listing grades ($0.10) and repairs ($0.50) on Base

About

MCP server for ListSmith — x402 listing grades ($0.10) and repairs ($0.50) on Base

Security Report

4.5

Use Caution4.5High Risk

This is a stdio MCP wrapper around the ListSmith x402 service that pays per call in USDC on Base using a user-supplied EVM key, with no hardcoded secrets and no shell, eval, or unexpected exfiltration. The main concerns are that the signer trusts the payee address and USDC contract from the server's 402 challenge without pinning them, and that per-call spend guards have no cumulative cap. Permissions match the stated purpose, so the score stays in the good range. Supply chain analysis found 5 known vulnerabilities in dependencies (0 critical, 5 high severity). Package verification found 1 issue.

8 files analyzed · 10 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

wallet_signing

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

EVM private key (0x...) of a wallet holding USDC on Base. Used locally to sign the x402 EIP-3009 authorization. For paid calls.Required

Environment variable: AGENT_PRIVATE_KEY

Path to a file containing that key (alternative to AGENT_PRIVATE_KEY).Optional

Environment variable: AGENT_KEY_FILE

Service base URL override (default: production).Optional

Environment variable: LIST_SMITH_URL

Spend guard per grade call in USDC micro-units (default 100000 = $0.10, the known price). The client refuses to sign anything priced above it.Optional

Environment variable: LIST_SMITH_GRADE_MAX_AMOUNT_UNITS

Spend guard per fix call in USDC micro-units (default 500000 = $0.50, the known price). The client refuses to sign anything priced above it.Optional

Environment variable: LIST_SMITH_FIX_MAX_AMOUNT_UNITS

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-quincygb-list-smith-mcp": {
      "env": {
        "AGENT_KEY_FILE": "your-agent-key-file-here",
        "LIST_SMITH_URL": "your-list-smith-url-here",
        "AGENT_PRIVATE_KEY": "your-agent-private-key-here",
        "LIST_SMITH_FIX_MAX_AMOUNT_UNITS": "your-list-smith-fix-max-amount-units-here",
        "LIST_SMITH_GRADE_MAX_AMOUNT_UNITS": "your-list-smith-grade-max-amount-units-here"
      },
      "args": [
        "list-smith-mcp"
      ],
      "command": "uvx"
    }
  }
}

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4.8

Local

MCP Marketplace

Free

by mcp-marketplace · Developer Tools

Search and install MCP servers from inside your AI client.

List Smith MCP Server

About

Security Report

Findings (10)Action required

Permissions Required

What You'll Need

How to Install

Reviews

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