OpenCode ​

Using LongCat Models for AI Programming in OpenCode

Overview ​

LongCat series models are supported for use in OpenCode. This document describes how to integrate OpenCode with the LongCat API Open Platform.

Prerequisites ​

Install OpenCode CLI

• Install OpenCode using curl

curl -fsSL https://opencode.ai/install | bash

• Install OpenCode using npm

npm i -g opencode-ai

Configure LongCat API ​

1. Run the authentication command

opencode auth login

2. Select Provider

Select the provider as Other, and enter LongCat

3. Enter API KEY

Enter any content; it will be configured later in the config file

4. File Configuration

Open the OpenCode configuration directory

- macOS / Linux: ~/.config/opencode/

- Windows: Users\***\.config\opencode

Create or edit the configuration file in that directory: opencode.json

opencode.json content

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "LongCat": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "LongCat",
      "options": {
        "baseURL": "https://api.longcat.chat/openai",
        "apiKey": "YOUR_API_KEY"
      },
      "models": {
        "LongCat-2.0": {
          "name": "LongCat-2.0",
          "options": {
            "thinking": {
              "type": "disabled"
            }
          }
        }
      }
    }
  }
}

💡 About thinking mode: When using LongCat-2.0, the model supports controlling whether thinking is enabled via the thinking field in the request body, with values {"type":"enabled"} (thinking on) or {"type":"disabled"} (thinking off). It is disabled by default. In OpenCode, you can configure this field within the model's options, as shown in the example above—disabled turns thinking off, and enabled turns it on.

Supported Models

Test CodingCode ​

Go back to the command line interface and type opencode to start using it

Use /models to switch the model to LongCat-2.0

Then enter your question and start the conversation