Disclaimer: This project is a community project and is not maintained by the OpenCode team (https://opencode.ai/) and has no ties to the OpenCode team.
This extension provides OpenCode Zen models to VS Code via the Language Model Chat Provider API (vendor id: opencode).
Prerequisites
VS Code ^1.104
Node.js (recent LTS recommended)
An OpenCode API key (OPENCODE_API_KEY)
Install
npm install
Build
npm run compile
Watch
npm run watch
Create Extension Package
vsce package
Run (Extension Development Host)
Open this folder in VS Code
Press F5 (Run → Start Debugging)
In the Extension Development Host, open Chat and enable the OpenCode Zen provider in the model picker.
Commands
Open the command palette (Ctrl/Cmd+Shift+P):
OpenCode Zen: Set API Key (opencodeZen.setApiKey)
Stores the key in SecretStorage (not in settings).
OpenCode Zen: Clear API Key (opencodeZen.clearApiKey)
OpenCode Zen: Refresh Model List (opencodeZen.refreshModels)
Refetches models from https://models.dev/api.json (filtered to provider opencode).
OpenCode Zen: Self Test (opencodeZen.selfTest)
Prompts for a model, then runs a small tool-calling roundtrip.
Output is written to the OpenCode Zen Output Channel.
Notes
Tool calling is supported by streaming LanguageModelToolCallPart from the provider.
Tool execution is handled by the caller (VS Code) by sending back LanguageModelToolResultPart on the next request.
