generated: '2026-08-27'
method: searched
source: https://localai.io/features/authentication
docs: https://localai.io/features/authentication
spec: openapi/localai-api-openapi.yml
summary:
  types:
  - apiKey
  - http
  - oauth2
  - openIdConnect
  api_key_in:
  - header
  - cookie
  note: >-
    The published Swagger 2.0 document declares only a single apiKey scheme (BearerAuth, Authorization
    header). The documentation describes a materially larger model than the contract does: two coexisting
    modes (legacy shared API keys and a database-backed user system) plus GitHub OAuth and generic OIDC
    single sign-on. This artifact records the documented model; the gap between the docs and the
    securityDefinitions block is a real contract-quality finding for the provider.
schemes:
- name: BearerAuth
  type: apiKey
  in: header
  parameter: Authorization
  declared_in_spec: true
  sources:
  - openapi/localai-api-openapi.yml
  - https://localai.io/features/authentication
modes:
- id: legacy-api-key
  name: Legacy API key authentication
  description: >-
    One or more shared keys configured via LOCALAI_API_KEY (comma-separated) or the equivalent CLI flag.
    Legacy keys grant full admin access — there is no role separation. Keys can also be managed at runtime
    through the Runtime Settings interface.
  credential_transports:
  - 'Authorization: Bearer <key>'
  - 'x-api-key: <key>'
  - 'xi-api-key: <key>'
  - 'token cookie'
  configuration:
  - env: LOCALAI_API_KEY
    description: Single key, or comma-separated list of keys.
  - env: LOCALAI_DISABLE_API_KEY_REQUIREMENT_FOR_HTTP_GET
    default: 'false'
    description: Enables a GET-only compatibility override when legacy keys are configured.
  - env: LOCALAI_HTTP_GET_EXEMPTED_ENDPOINTS
    description: Regular expressions naming the exempt GET routes; inert unless the flag above is enabled.
- id: user-auth
  name: User authentication system
  description: >-
    A database-backed user system (SQLite by default, PostgreSQL supported) with accounts, admin/user
    roles, session cookies, per-user API keys, invite links and per-user token-usage accounting. The first
    user to sign in is automatically promoted to admin.
  enabled_by:
  - LOCALAI_AUTH=true
  - Setting a GitHub OAuth Client ID (auto-enables)
  - Setting an OIDC Client ID (auto-enables)
  roles:
  - id: admin
    description: >-
      Full access, including model management, backend configuration, system settings, traces, agents and
      user management.
  - id: user
    description: >-
      Inference endpoints only — chat completions, embeddings, image/video/audio generation, TTS, MCP
      chat, and the caller's own usage statistics.
  registration_modes:
  - id: open
    description: Anyone can register and is immediately active.
  - id: approval
    default: true
    description: New users land in pending status until an admin approves them; a valid invite activates immediately.
  - id: invite
    description: Registration requires an admin-generated invite link.
  build_requirement: >-
    Requires CGO and the `auth` build tag. Docker images ship with GO_TAGS="auth"; a source build without
    the tag ignores LOCALAI_AUTH entirely.
- id: oauth-github
  name: GitHub OAuth
  type: oauth2
  flow: authorizationCode
  authorization_start: GET /api/auth/github/login
  callback: GET /api/auth/github/callback
  callback_url_pattern: '{LOCALAI_BASE_URL}/api/auth/github/callback'
  configuration:
  - env: GITHUB_CLIENT_ID
  - env: GITHUB_CLIENT_SECRET
  - env: LOCALAI_BASE_URL
- id: oidc
  name: OIDC single sign-on
  type: openIdConnect
  discovery: /.well-known/openid-configuration on the configured issuer
  scopes_requested:
  - openid
  - profile
  - email
  authorization_start: GET /api/auth/oidc/login
  callback: GET /api/auth/oidc/callback
  callback_url_pattern: '{LOCALAI_BASE_URL}/api/auth/oidc/callback'
  configuration:
  - env: LOCALAI_OIDC_ISSUER
  - env: LOCALAI_OIDC_CLIENT_ID
  - env: LOCALAI_OIDC_CLIENT_SECRET
  - env: LOCALAI_BASE_URL
  documented_providers:
  - Keycloak
  - Google
  - Okta
  - Authentik
  - Azure AD
- id: user-api-keys
  name: Per-user API keys
  description: >-
    Authenticated users create personal keys through POST /api/auth/api-keys. A user API key inherits the
    creating user's role, so an admin's key grants admin access.
  management_endpoints:
  - POST /api/auth/api-keys
  - GET /api/auth/api-keys
  - DELETE /api/auth/api-keys/{id}
anonymous_surface:
  description: >-
    When either authentication mode is configured, the HTTP surface is private by default. Only the routes
    below answer anonymously. If neither mode is configured the middleware does not restrict requests at all.
  discovery:
  - GET /.well-known/localai.json
  - GET /api/instructions
  - GET /api/instructions/{name}
  - GET /swagger and GET under /swagger/
  bootstrap:
  - GET /healthz
  - GET /readyz
  - GET /api/auth/status
  - POST /api/auth/token-login
  - POST /api/auth/register
  - POST /api/auth/login
  - GET /api/auth/github/login
  - GET /api/auth/github/callback
  - GET /api/auth/oidc/login
  - GET /api/auth/oidc/callback
  - OPTIONS under /api/auth/
  - GET /api/branding and GET under /branding/asset/
  overrides:
    field: ApplicationConfig.PathWithoutAuth
    default: empty
    description: >-
      Embedded deployments may add path prefixes that bypass global authentication for every HTTP method
      below that prefix. Route-specific authorization still applies.
authorization:
  model: role-based
  admin_only_examples:
  - GET /api/traces
  - GET /api/traces/summary
  - POST /api/traces/clear
  - GET /system
  - GET /backend/monitor
  - POST /backend/shutdown
  - POST /backend/load
  - GET /api/p2p (and all /api/p2p/* routes)
  - All /api/agent/tasks/* and /api/agent/jobs/* routes
  - GET /models/available
  - GET /models/galleries
  - GET /backends and GET /backends/available
  user_accessible_examples:
  - POST /v1/chat/completions
  - POST /v1/embeddings
  - POST /v1/completions
  - POST /v1/images/generations
  - POST /v1/mcp/chat/completions
  - POST /v1/messages
  - POST /v1/responses
  - GET /v1/models
  - GET /api/auth/usage
  failure_codes:
  - code: 401
    condition: "Missing or invalid credentials. Response carries the header WWW-Authenticate: Bearer."
  - code: 403
    condition: Authenticated non-admin calling an admin-only endpoint.