opencode-helicone-session

An OpenCode plugin that automatically injects Helicone session headers into your LLM requests. This groups all requests from the same OpenCode session together in Helicone's dashboard.

Installation

npm install -g opencode-helicone-session
# or
bun add -g opencode-helicone-session

Usage

Add the plugin to your opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["opencode-helicone-session"],
}

That's it! The plugin will automatically add:

• Helicone-Session-Id - A consistent UUID derived from the OpenCode session ID
• Helicone-Session-Name - The session title

How It Works

1. The plugin listens for OpenCode session events (session.created, session.updated)
2. On each LLM request, it injects the session headers via a custom fetch wrapper
3. All requests in the same session are grouped together in Helicone

Custom Headers

If you specify your own Helicone-Session-Id or Helicone-Session-Name in your config, the plugin will not overwrite them.

Requirements

• OpenCode v0.15.0 or later
• A Helicone account

License

MIT