The AIUS origin is https://light.aius.co. The browser signs in with a secure session cookie. The terminal signs in with an OAuth authorization code or a device code, and receives two grants from one approval: one for models and one for AIUS Light. Model provider keys never leave the AIUS server.
EndpointPurposeGrant
GET /v1/modelsThe AIUS model catalogModel
POST /v1/chat/completionsModel requests, OpenAI-compatibleModel
POST /mcp/platformAIUS Light tools (projects, reports, files, sharing)Platform
GET /.well-known/oauth-authorization-serverOAuth server metadataNone
GET /.well-known/oauth-protected-resource/mcp/platformPlatform resource metadataNone
The terminal performs the OAuth flow for you. Other clients must use the right grant for each resource and must not send browser cookies to the model or platform endpoints. Model requests are billed to the signed-in account. To bill an organisation, send its ID in the x-aius-organisation header; viewers cannot use an organisation’s budget. See Models for the accepted model IDs.