Boar blockchain MCP

Config file location

OpenCode reads opencode.json from your project root automatically. You can also add it to the global config at ~/.config/opencode/opencode.json.

This repo includes a ready-made opencode.json at the root — no manual setup needed if you cloned it.

Basic endpoint (recommended start)

Create or edit opencode.json in your project root:

{
  "mcp": {
    "boar-blockchain-mcp-basic": {
      "type": "remote",
      "url": "https://mcp.boar.network/basic"
    }
  }
}

Both endpoints

{
  "mcp": {
    "boar-blockchain-mcp-basic": {
      "type": "remote",
      "url": "https://mcp.boar.network/basic"
    },
    "boar-blockchain-mcp-advanced": {
      "type": "remote",
      "url": "https://mcp.boar.network/advanced"
    }
  }
}

OpenCode uses "type": "remote" for HTTP MCP servers — no API key or auth headers needed for Boar.

Global config

To make the servers available in every project, add the same "mcp" block to ~/.config/opencode/opencode.json.

Verify

1. Run opencode mcp list and confirm both servers appear as connected.
2. Start a session and ask: "What is the ETH balance of vitalik.eth?"
3. OpenCode should invoke eth_get_balance from Boar blockchain MCP.

Troubleshooting

• Server not listed — Ensure opencode.json is in the current project root. Run opencode mcp list from that directory.
• Connection error — Check that "type": "remote" is set (not "local"). Verify the URL is reachable.
• Changes not picked up — OpenCode re-reads config on startup. Restart your session after editing opencode.json.