web3agent

io.github.Apegurus/web3agent · v0.6.2

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

Website Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add web3agent -e CHAIN_ID=<CHAIN_ID> -e CONFIRM_WRITES=<CONFIRM_WRITES> -e ETHERSCAN_API_KEY=<ETHERSCAN_API_KEY> -e ZEROX_API_KEY=<ZEROX_API_KEY> -e COINGECKO_API_KEY=<COINGECKO_API_KEY> -e CCXT_CONFIG_PATH=<CCXT_CONFIG_PATH> -e OWS_PASSPHRASE=<OWS_PASSPHRASE> -- npx -y [email protected]

claude_desktop_config.json

{
  "mcpServers": {
    "web3agent": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CHAIN_ID": "<CHAIN_ID>",
        "CONFIRM_WRITES": "<CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<OWS_PASSPHRASE>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "web3agent": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CHAIN_ID": "<CHAIN_ID>",
        "CONFIRM_WRITES": "<CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<OWS_PASSPHRASE>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "web3agent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CHAIN_ID": "<CHAIN_ID>",
        "CONFIRM_WRITES": "<CONFIRM_WRITES>",
        "ETHERSCAN_API_KEY": "<ETHERSCAN_API_KEY>",
        "ZEROX_API_KEY": "<ZEROX_API_KEY>",
        "COINGECKO_API_KEY": "<COINGECKO_API_KEY>",
        "CCXT_CONFIG_PATH": "<CCXT_CONFIG_PATH>",
        "OWS_PASSPHRASE": "<OWS_PASSPHRASE>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

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

Details

Package	`[email protected]` (NPM, stdio)
First published	30 Jun 2026
Last updated	30 Jun 2026
Registry name	`io.github.Apegurus/web3agent`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

Pair it with live search

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For maintainers

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