Authentication

Spectral public setup uses OAuth for Model API and MCP access.

OAuth values

Value	Setting
Auth issuer	`https://viewer.spectralco.co`
Model API	`https://viewer.spectralco.co`
MCP endpoint	`https://viewer.spectralco.co/mcp`
Scopes	`mcp:models:read mcp:models:write`

mcp:models:read allows the client to confirm model-creation results and open viewer payloads for created models.

mcp:models:write allows model creation and element-write workflows when the host asks for user confirmation.