Use A2Agent Models with Open Code Desktop - A2Agent -Unified API Gateway For LLMs

OpenCode Desktop accepts custom OpenAI-compatible providers from its Settings panel. This guide adds A2Agent as a provider and attaches one or more models so you can start chatting right away.

Prerequisites

Open Code Desktop is installed. Download Open Code Desktop
An A2Agent API key — sign up at a2agent.me/register to get one

Add a Provider

Open Open Code Desktop.
Click Home in the top-left corner, or press Ctrl+B.
Go to Settings → Providers → Show More Providers.
Choose Custom OpenAI-compatible provider.

Fill in the Provider Information

Field	Value
Provider ID	A unique identifier in the configuration file. Use only lowercase letters, numbers, hyphens, or underscores, for example `a2agent-opencode`
Display Name	Custom, for example `a2agent-opencode`
Base URL	`https://api.a2agent.me/v1`, which must end with `/v1`
API Key	Your A2Agent API key

Add Models

Enter the model-id. For available IDs, see A2Agent Models.You can add one or more models.

Select a Model and Start Chatting

Open OpenCode, and in Select model, choose the model you just added under the a2agent-opencode group, for example glm 5.3.

Send any message, such as hi; if you receive a normal reply, the configuration is successful.