> ## Documentation Index
> Fetch the complete documentation index at: https://docs.knowledgestack.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Sso Login Handler

> SSO login endpoint.

Resolves the tenant's IdP configuration and dispatches to the
appropriate provider-specific handler. Sets the UAT cookie and
redirects to the frontend.



## OpenAPI

````yaml /openapi.yaml get /v1/auth/sso/{tenant_id}/signin
openapi: 3.1.0
info:
  title: Knowledge Stack API
  description: Knowledge Stack backend API for authentication and knowledge management
  version: 0.1.0
servers:
  - url: http://localhost:8000
    description: Knowledge Stack API local dev server
security: []
tags:
  - name: auth
    description: Authentication and identity management
  - name: users
    description: User accounts
  - name: tenants
    description: Tenant management
  - name: invites
    description: Tenant invitations
  - name: folders
    description: Folder management
  - name: documents
    description: Document management
  - name: document-versions
    description: Document version management
  - name: sections
    description: Document sections
  - name: chunks
    description: Chunk CRUD and semantic search
  - name: chunk-lineages
    description: Chunk lineage tracking
  - name: tags
    description: Tag management
  - name: path-parts
    description: Path part traversal and tagging
  - name: Threads
    description: Thread conversations
  - name: Thread Messages
    description: Thread message management
  - name: user-permissions
    description: User path permissions
  - name: workflows
    description: Ingestion workflows
paths:
  /v1/auth/sso/{tenant_id}/signin:
    get:
      tags:
        - auth
      summary: Sso Login Handler
      description: |-
        SSO login endpoint.

        Resolves the tenant's IdP configuration and dispatches to the
        appropriate provider-specific handler. Sets the UAT cookie and
        redirects to the frontend.
      operationId: sso_signin
      parameters:
        - name: tenant_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
            title: Tenant Id
        - name: redirect
          in: query
          required: false
          schema:
            type: string
            description: Post-login redirect path
            default: ''
            title: Redirect
          description: Post-login redirect path
      responses:
        '307':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError

````