opencode-openai-compatible

OpenCode-compatible AI SDK provider and plugin with streaming, reasoning, and tool call support.

Features

• Streaming with Reasoning: Full support for reasoning_content in streaming responses
• Tool Call Support: Proper handling of function calls without crashes
• finishReason Format: Returns correct string format (stop, length, etc.)
• Plugin Mode: OpenCode plugin architecture for seamless integration
• Legacy Provider Mode: AI SDK provider for direct usage

Installation

bun add opencode-openai-compatible

Plugin Mode (Recommended)

import { createOpenCodeCompatiblePlugin } from 'opencode-openai-compatible';

const plugin = createOpenCodeCompatiblePlugin({
  baseURL: 'http://127.0.0.1:8045',
  apiKey: 'your-api-key',
});

Legacy Provider Mode

import { createOpenCodeCompatible } from 'opencode-openai-compatible';
import { generateText } from 'ai';

const provider = createOpenCodeCompatible({
  apiKey: 'your-api-key',
  baseURL: 'http://localhost:6608/v1',
});

const { text } = await generateText({
  model: provider.chatModel('gemini-3-flash'),
  prompt: 'Hello, world!',
});

Streaming

import { streamText } from 'ai';

const { textStream } = await streamText({
  model: provider.chatModel('gemini-3-pro-high'),
  prompt: 'Tell me a story',
});

for await (const chunk of textStream) {
  process.stdout.write(chunk);
}

Supported Models

• gemini-3-flash
• gemini-3-pro
• gemini-3-pro-high
• claude-sonnet-4-5
• claude-sonnet-4-5-thinking
• claude-opus-4-5-thinking

Testing

bun test

bun test tests/e2e/api.test.ts

License

MIT