OpenCouncil Plugin for OpenCode

A multi-model council plugin for OpenCode that runs prompts across multiple LLMs and synthesizes their responses to identify consensus and discrepancies.

Installation

Add the plugin to your opencode.json:

{
  "plugin": ["opencode-opencouncil"]
}

Then restart OpenCode. The plugin will be automatically installed via Bun.

Configuration

Add the configuration to your opencode.json:

{
  "plugin": ["opencode-opencouncil"],
  "opencouncil": {
    "defaultCouncil": "standard",
    "councils": {
      "standard": {
        "members": [
          { "name": "gemini", "model": "google/gemini-2.0-flash", "temperature": 0.2 },
          { "name": "codex", "model": "openai/codex", "temperature": 0.2 },
          { "name": "opus", "model": "anthropic/claude-opus-4", "temperature": 0.2 }
        ]
      }
    }
  }
}

Council Member Options

Each member supports:

• name: Identifier for the member
• model: Provider/model ID (format: provider/model)
• temperature: Sampling temperature (optional)
• system: Custom system prompt (optional)
• options: Additional model options (optional)

Usage

Tool: opencouncil.run

Run a prompt through the configured council:

Use tool: opencouncil.run
Prompt: "Explain the benefits of TypeScript"

Optional parameters:

• council: Specify a council name (defaults to defaultCouncil)

Tool: opencouncil.init

Initialize configuration and optionally create an agent file:

Use tool: opencouncil.init
writeAgentFile: true

This will:

1. Print the configuration block to add to your opencode.json
2. If writeAgentFile is true, create .opencode/agents/opencouncil.md

Agent: @opencouncil

If you ran opencouncil.init with writeAgentFile: true, you can use:

@opencouncil "What are the best practices for error handling?"

The agent will automatically call opencouncil.run and summarize the results.

Output Format

The plugin returns:

1. Member responses - Individual answers from each model
2. Consensus - Claims endorsed by multiple members
3. Discrepancies - Claims mentioned by only one member
4. Uncertainties - Each member's expressed uncertainties

Troubleshooting

Plugin installation stuck

Clear the cache and restart:

rm -rf ~/.cache/opencode

Model not found

Ensure the model IDs match those available in your OpenCode installation. Use OpenCode's CLI commands to discover available models.

License

MIT