Configuration

Config Section

All web configuration lives under the web key in application.yaml. The provider auto-injects the typed WebConfig — no manual loading needed.

Env prefix: LEX_WEB__ | Nested delimiter: __

web:
  enabled: true
  env: development
  server:
    host: 0.0.0.0
    port: 8000
    workers: 1
    reload: false
    debug: false
  openapi_title: "My API"
  openapi_version: "1.0.0"

export LEX_WEB__SERVER__HOST=0.0.0.0
export LEX_WEB__SERVER__PORT=8080

WebConfig

Key	Type	Default	Env Var	Description
`enabled`	`bool`	`True`	`LEX_WEB__ENABLED`	Enable the web module
`env`	`str \| None`	`None`	`LEX_WEB__ENV`	Environment name (development/staging/production)
`openapi_title`	`str`	`"API"`	`LEX_WEB__OPENAPI_TITLE`	OpenAPI title
`openapi_version`	`str`	`"1.0.0"`	`LEX_WEB__OPENAPI_VERSION`	OpenAPI version
`openapi_url`	`str \| None`	`"/openapi.json"`	`LEX_WEB__OPENAPI_URL`	OpenAPI schema path
`swagger_ui_url`	`str \| None`	`"/docs"`	`LEX_WEB__SWAGGER_UI_URL`	Swagger UI path
`redoc_url`	`str \| None`	`"/redoc"`	`LEX_WEB__REDOC_URL`	ReDoc path
`compression_enabled`	`bool`	`True`	`LEX_WEB__COMPRESSION_ENABLED`	Enable response compression
`template_directory`	`str`	`"templates"`	`LEX_WEB__TEMPLATE_DIRECTORY`	Jinja2 template directory
`debug_routes`	`bool`	`False`	`LEX_WEB__DEBUG_ROUTES`	Enable `/debug/*` endpoints
`debug_routes_token`	`SecretStr \| None`	`None`	`LEX_WEB__DEBUG_ROUTES_TOKEN`	Token for debug routes (X-Debug-Token header)
`enable_auth`	`bool`	`False`	`LEX_WEB__ENABLE_AUTH`	Enable built-in auth middleware
`enable_identity_resolution`	`bool`	`False`	`LEX_WEB__ENABLE_IDENTITY_RESOLUTION`	Resolve OAuth external IDs
`max_body_size`	`int \| None`	`10485760` (10 MiB)	`LEX_WEB__MAX_BODY_SIZE`	Max request body size (None = disabled)
`auth_exclude_paths`	`list[str]`	`["/health", "/health/", "/docs", "/redoc", "/openapi.json"]`	`LEX_WEB__AUTH_EXCLUDE_PATHS`	Paths excluded from auth

ServerConfig

Key	Type	Default	Env Var	Description
`host`	`str`	`"127.0.0.1"`	`LEX_WEB__SERVER__HOST`	Bind host
`port`	`int`	`8000`	`LEX_WEB__SERVER__PORT`	Bind port
`workers`	`int`	`1`	`LEX_WEB__SERVER__WORKERS`	Number of workers
`reload`	`bool`	`False`	`LEX_WEB__SERVER__RELOAD`	Enable auto-reload
`debug`	`bool`	`False`	`LEX_WEB__SERVER__DEBUG`	Enable debug mode

RateLimitConfig

Key	Type	Default	Env Var	Description
`enabled`	`bool`	`True`	`LEX_WEB__RATE_LIMIT__ENABLED`	Enable rate limiting
`default_limit`	`int`	`100`	`LEX_WEB__RATE_LIMIT__DEFAULT_LIMIT`	Max requests per window
`default_window`	`int`	`60`	`LEX_WEB__RATE_LIMIT__DEFAULT_WINDOW`	Window in seconds
`whitelist_ips`	`list[str]`	`[]`	`LEX_WEB__RATE_LIMIT__WHITELIST_IPS`	Exempt IPs
`storage_backend`	`str`	`"memory"`	`LEX_WEB__RATE_LIMIT__STORAGE_BACKEND`	Backend (memory/redis)

Rate Limit Rules

Per-path rules in rules:

web:
  rate_limit:
    rules:
      "/api/auth/login":
        requests: 10
        window: 60
      "/api/health":
        requests: 1000
        window: 60

StaticFileConfig

Key	Type	Default	Env Var	Description
`enabled`	`bool`	`False`	`LEX_WEB__STATIC__ENABLED`	Enable static file serving
`directory`	`str`	`"static"`	`LEX_WEB__STATIC__DIRECTORY`	Directory to serve
`prefix`	`str`	`"/static"`	`LEX_WEB__STATIC__PREFIX`	URL prefix
`html`	`bool`	`False`	`LEX_WEB__STATIC__HTML`	Serve HTML (SPA mode)

APIDocsConfig

Key	Type	Default	Env Var	Description
`enabled`	`bool`	`False`	`LEX_WEB__API_DOCS__ENABLED`	Enable API docs endpoints
`provider`	`str`	`"both"`	`LEX_WEB__API_DOCS__PROVIDER`	”swagger”, “redoc”, or “both”

CORSConfig

Key	Type	Default	Env Var	Description
`allowed_origins`	`list[str]`	`["http://localhost:3000", "http://localhost:8001"]`	`LEX_WEB__CORS__ALLOWED_ORIGINS`	Allowed origins
`allow_methods`	`list[str]`	`["GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS"]`	`LEX_WEB__CORS__ALLOW_METHODS`	Allowed HTTP methods

In production, LEX_WEB__CORS__ALLOWED_ORIGINS must be set to specific origins — wildcard * is rejected with a validation error.

SecurityConfig

Sub-keys: security.csrf, security.headers, security.hsts, security.csp, security.cross_origin. Import the typed configs from lexigram.web.security.config for full field listings.

web:
  security:
    csrf:
      enabled: true
      excluded_paths: ["/api/", "/health", "/metrics"]
    hsts:
      max_age: 31536000
      include_subdomains: true

Application Example

web:
  enabled: true
  env: development
  server:
    host: 0.0.0.0
    port: 8000
    reload: true
  cors:
    allowed_origins:
      - "http://localhost:3000"
  rate_limit:
    enabled: true
    default_limit: 200
    default_window: 60
  openapi_title: "My API"
  openapi_version: "0.1.0"

Environment override equivalent:

export LEX_WEB__SERVER__HOST=0.0.0.0
export LEX_WEB__SERVER__PORT=8080
export LEX_WEB__CORS__ALLOWED_ORIGINS='["https://myapp.com"]'
export LEX_WEB__RATE_LIMIT__DEFAULT_LIMIT=500