How do I install Serp402?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Serp402 need an API key?

The publisher lists these environment variables: SERP402_EVM_PRIVATE_KEY, SERP402_SOLANA_PRIVATE_KEY, SERP402_MAX_SPEND_USD, SERP402_ENDPOINT.

What transport does Serp402 use?

Serp402 runs locally over stdio.

Serp402

by com.serp402

Google search for agents: web, news, images, places, shopping, Scholar. Paid per call over x402.

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Local command

npx -y [email protected]

Credentials from the publisher

SERP402_EVM_PRIVATE_KEY — 0x… key holding USDC on Base. Each search costs USD 0.005, charged to this wallet. Either this or the Solana key is required to search.
SERP402_SOLANA_PRIVATE_KEY — ed25519 key (hex or base58) holding USDC on Solana. Alternative to the Base key.
SERP402_MAX_SPEND_USD — Stop searching after this much has been spent in one session. Default 1.00.
SERP402_ENDPOINT — Override the endpoint. Default https://serp402.com

Provider

Claude Code

SERP402_EVM_PRIVATE_KEY=<secret> SERP402_SOLANA_PRIVATE_KEY=<secret> SERP402_MAX_SPEND_USD=<value> SERP402_ENDPOINT=<value> claude mcp add com.serp402-mcp -- npx -y [email protected]

Run in a terminal.

Claude Desktop

{
  "mcpServers": {
    "com.serp402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "SERP402_EVM_PRIVATE_KEY": "<secret>",
        "SERP402_SOLANA_PRIVATE_KEY": "<secret>",
        "SERP402_MAX_SPEND_USD": "<value>",
        "SERP402_ENDPOINT": "<value>"
      }
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

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Questions

How do I install Serp402?: Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Serp402 need an API key?: The publisher lists these environment variables: SERP402_EVM_PRIVATE_KEY, SERP402_SOLANA_PRIVATE_KEY, SERP402_MAX_SPEND_USD, SERP402_ENDPOINT.
What transport does Serp402 use?: Serp402 runs locally over stdio.
When was Serp402 last checked?: Last checked 2026-10-16. Google search for agents: web, news, images, places, shopping, Scholar. Paid per call over x402.

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