Setting up Claude Desktop

Add a separate Anthropic-compatible connection in Claude Desktop for Nexus.

Connection values

1. Open the connection settings in Claude Desktop.
2. Create a custom Anthropic endpoint named Nexus.
3. Set Base URL to https://api.nexus-hub.ru, without a /v1 suffix.
4. Enter the Nexus API key in the protected API Key field.
5. Set Anthropic API version to 2023-06-01 if the client exposes this field.
6. Select a model returned by GET /v1/models.

Claude Desktop should send requests to POST /v1/messages. If the client asks for environment variables instead of UI fields, use:

export ANTHROPIC_BASE_URL="https://api.nexus-hub.ru"
export ANTHROPIC_AUTH_TOKEN="your_nexus_key"

Do not append /v1/messages to the Base URL; the client builds the route. Do not store the key in shared project files.

Official reference: Claude Desktop help.