web3agent MCP Server

Name: web3agent MCP Server
Author: io.github.Apegurus

io.github.Apegurus/web3agent

Repository Registry

What is the web3agent MCP server?

Web3 MCP proxy for AI agents: DeFi swaps, bridges, market data, wallets, and gated writes.

How to install web3agent

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

CHAIN_ID
Default EVM chain ID. Defaults to Base mainnet (8453).
CONFIRM_WRITES
Require explicit confirmation before write operations execute. Defaults to true.
ETHERSCAN_API_KEY
secret
Optional Etherscan API key for Etherscan-backed explorer tools.
ZEROX_API_KEY
secret
Optional 0x API key for 0x swap plugin support.
COINGECKO_API_KEY
secret
Optional CoinGecko API key for higher-rate market data.
CCXT_CONFIG_PATH
Optional local path to a CCXT account config JSON file.
OWS_PASSPHRASE
secret
Optional Open Wallet Standard vault passphrase for persisted local wallets.

Claude Desktop

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

{
  "mcpServers": {
    "web3agent": {
      "command": "npx",
      "args": [
        "-y",
        "web3agent",
        "web3agent"
      ],
      "env": {
        "CHAIN_ID": "<YOUR_CHAIN_ID>",
        "CONFIRM_WRITES": "<YOUR_CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<YOUR_ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<YOUR_ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<YOUR_COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<YOUR_CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<YOUR_OWS_PASSPHRASE>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "web3agent": {
      "command": "npx",
      "args": [
        "-y",
        "web3agent",
        "web3agent"
      ],
      "env": {
        "CHAIN_ID": "<YOUR_CHAIN_ID>",
        "CONFIRM_WRITES": "<YOUR_CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<YOUR_ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<YOUR_ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<YOUR_COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<YOUR_CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<YOUR_OWS_PASSPHRASE>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "web3agent": {
      "command": "npx",
      "args": [
        "-y",
        "web3agent",
        "web3agent"
      ],
      "env": {
        "CHAIN_ID": "<YOUR_CHAIN_ID>",
        "CONFIRM_WRITES": "<YOUR_CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<YOUR_ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<YOUR_ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<YOUR_COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<YOUR_CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<YOUR_OWS_PASSPHRASE>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "web3agent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "web3agent",
        "web3agent"
      ],
      "env": {
        "CHAIN_ID": "<YOUR_CHAIN_ID>",
        "CONFIRM_WRITES": "<YOUR_CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<YOUR_ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<YOUR_ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<YOUR_COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<YOUR_CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<YOUR_OWS_PASSPHRASE>"
      }
    }
  }
}

Claude Code

claude mcp add web3agent --env CHAIN_ID=<YOUR_CHAIN_ID> --env CONFIRM_WRITES=<YOUR_CONFIRM_WRITES> --env ETHERSCAN_API_KEY=<YOUR_ETHERSCAN_API_KEY> --env ZEROX_API_KEY=<YOUR_ZEROX_API_KEY> --env COINGECKO_API_KEY=<YOUR_COINGECKO_API_KEY> --env CCXT_CONFIG_PATH=<YOUR_CCXT_CONFIG_PATH> --env OWS_PASSPHRASE=<YOUR_OWS_PASSPHRASE> -- npx -y web3agent web3agent