OpenCode

OpenCode is a powerful AI coding agent. Built for the terminal.

It offers a nicer GUI than Claude Code and is written in Go. In my experience, it provides superior Clojure syntax highlighting compared to Claude.

Create / edit ~/.opencode.json and add clojure-mcp configuration there.

• This is an example config file:

{
  "data": {},
  "mcpServers": {
    "clojure-mcp": {
      "command": "/bin/sh",
      "env": [],
      "args": [
        "-c",
        "cd /Users/john/clojure-mcp && clojure -X:mcp :port 7888"
      ],
      "type": "stdio",
      "url": "",
      "headers": null
    }
  },
  "lsp": {
    "clojure": {
      "disabled": true,
      "command": "clojure-lsp",
      "args": null,
      "options": null
    }
  },
  "agents": {
    "coder": {
      "model": "openrouter.gemini-2.5-flash",
      "maxTokens": 0,
      "reasoningEffort": ""
    },
    "task": {
      "model": "openrouter.gemini-2.5-flash",
      "maxTokens": 0,
      "reasoningEffort": ""
    },
    "title": {
      "model": "openrouter.gemini-2.5-flash",
      "maxTokens": 0,
      "reasoningEffort": ""
    }
  },
  "tui": {
    "theme": "opencode"
  },
  "shell": {}
}

• The most relevant section is "mcpServers" setting.
• While there's also an lsp section, OpenCode crashed for me when enabled, so I've kept it disabled. You might have better luck enabling it.
• Run OpenCode with the debug option (opencode -d). If you don't encounter errors and have your REPL running on :7888, you should be all set.