<!-- Source: https://docs.biosimulant.com/agents/connect/chatgpt -->

# ChatGPT web

Add a custom connection once on web. New sessions use the same connection.

1. Open [ChatGPT Plugins](https://chatgpt.com/plugins) → **+ → Add custom MCP server**.
2. Name it **Biosimulant**, paste the address below and choose **OAuth**.

```text
https://api.biosimulant.com/mcp
```

3. In **Advanced OAuth settings**, choose **Dynamic Client Registration (DCR)**. Keep the discovered endpoints; no client secret is needed.
4. Create the connection, sign in to Biosimulant and install your custom connection.
5. [Create a session in Studio](/studio/quickstart). In a new ChatGPT chat, select Biosimulant with **@** and paste the session prompt.

The Biosimulant plugin is coming soon. Use the custom connection for now.

Using staging? Copy the server address from staging Studio instead.

<details>
<summary>If you cannot add or use the connection</summary>

Custom connections depend on your account and workspace permissions. Use **DCR**, rather than CIMD. If tools are missing after sign-in, select **Refresh** in the connection settings.

See [OpenAI's custom MCP guide](https://developers.openai.com/api/docs/guides/custom-mcp-server).

</details>

[ChatGPT desktop](/agents/connect/chatgpt-desktop) · [ChatGPT mobile](/agents/connect/chatgpt-mobile) · [Setup help](/agents/connect/help)