occontext-thinking-trim

OpenCode plugin that trims thinking/reasoning from context while preserving display.

Why?

Models with extended thinking (Claude, DeepSeek, etc.) send reasoning back in context on each request. This can:

• Increase token usage
• Potentially influence model behavior in unwanted ways

This plugin removes reasoning from the context sent to the model, while keeping it visible in the UI.

Installation

Add to your opencode.json:

{
  "plugins": ["@old-mikser/occontext-thinking-trim"]
}

On first run, the plugin creates ~/.config/opencode/OCTT.jsonc with default settings.

Configuration

Edit ~/.config/opencode/OCTT.jsonc:

{
  // Enable or disable thinking trim
  "enabled": true,
  
  // Number of recent turns to preserve thinking
  // 0 = trim all thinking from context
  // 2 = keep thinking in last 2 assistant messages
  "keepTurns": 0
}

Options

| Option | Type | Default | Description | |--------|------|---------|-------------| | enabled | boolean | true | Enable/disable the plugin | | keepTurns | number | 0 | Number of recent turns to preserve thinking. 0 = trim all |

Example

With keepTurns: 2, the last 2 assistant messages will keep their reasoning intact, while older reasoning is removed.

License

MIT