> ## Documentation Index > Fetch the complete documentation index at: https://docs.lobbystack.com/llms.txt > Use this file to discover all available pages before exploring further. # Put the business on a managed plan > Operator platform keys only; any other key gets a 403 forbidden. Puts the business on the enterprise plan outside Polar, which unlocks what a paid plan unlocks while the operator bills the business directly, and removes a spending cap left from an earlier plan. A business with a live Polar subscription is a 409. If the business later starts a Starter or Pro subscription in Polar, Polar takes over. ## OpenAPI ````yaml /api-reference/openapi.json post /billing/managed-plan openapi: 3.1.0 info: title: LobbyStack API version: v1 description: >- Read calls, contacts, appointments and messages, book appointments, and subscribe to webhooks. Authenticate with an API key in the Authorization header. A platform key also names the business it acts on in the LobbyStack-Business header. Each key allows 120 requests per minute by default. servers: - url: https://app.lobbystack.com/api/v1 security: - bearerAuth: [] tags: - name: Business - name: Receptionist - name: Billing - name: Phone numbers - name: Onboarding - name: Team - name: Website chat - name: Calendars - name: Notifications - name: Calls - name: Contacts - name: Appointments - name: Messages - name: Knowledge - name: Webhooks - name: Platform paths: /billing/managed-plan: post: tags: - Billing summary: Put the business on a managed plan description: >- Operator platform keys only; any other key gets a 403 forbidden. Puts the business on the enterprise plan outside Polar, which unlocks what a paid plan unlocks while the operator bills the business directly, and removes a spending cap left from an earlier plan. A business with a live Polar subscription is a 409. If the business later starts a Starter or Pro subscription in Polar, Polar takes over. operationId: setManagedPlan parameters: - name: LobbyStack-Business in: header description: >- The business a platform key acts on. Required with a platform key. A per-business key may leave it out; if it sends one, it must be the key's own business. schema: type: string format: uuid requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ManagedPlanCreate' responses: '200': description: OK content: application/json: schema: type: object required: - data properties: data: $ref: '#/components/schemas/Billing' '400': description: >- The request is invalid (invalid_request), or a platform key sent no LobbyStack-Business header (business_required). content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: The API key is missing, invalid, or revoked (unauthorized). content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: >- Refused. insufficient_scope: the key lacks the billing:manage scope. forbidden: a per-business key named another business in LobbyStack-Business. key_owner_inactive: the person the key acts for can't any more: a per-business key's creator is no longer an owner or admin, or a platform key's owner_email has no verified LobbyStack account. content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: A platform key named a business it cannot act on (not_found). content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: The request conflicts with the current state. content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: >- Too many requests (rate_limited). Wait for the Retry-After header's number of seconds. content: application/json: schema: $ref: '#/components/schemas/Error' headers: Retry-After: schema: type: integer description: Seconds to wait. security: - bearerAuth: [] components: schemas: ManagedPlanCreate: type: object properties: plan: type: string const: enterprise required: - plan additionalProperties: false Billing: type: object properties: plan: type: string enum: - self_host - free_cloud - starter - pro - enterprise description: >- The plan in force now. A Starter or Pro subscription that lapsed reads as free_cloud. managed: type: boolean description: >- true when the LobbyStack operator runs the plan outside Polar and bills the business directly. subscription_state: description: >- The subscription's state, such as active, trialing, past_due or canceled. Null without a subscription. type: - string - 'null' billing_interval: anyOf: - type: string enum: - monthly - annual - type: 'null' description: Null unless the plan is Starter or Pro. current_period_end: anyOf: - type: string format: date-time description: ISO 8601 timestamp in UTC. - type: 'null' description: When the paid period ends. Null unless the plan is Starter or Pro. spending_cap_cents: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' description: >- The most a Starter or Pro plan spends on usage over its allowance each month. Null means no cap, and is always null on other plans. overage_spend_cents: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: Usage over the allowance this month. spending_cap_reached: type: boolean description: >- true once this month's overage reached the cap, which stops further billable usage. required: - plan - managed - subscription_state - billing_interval - current_period_end - spending_cap_cents - overage_spend_cents - spending_cap_reached additionalProperties: false description: The business's plan and what it spends. Error: type: object properties: error: type: object properties: code: type: string enum: - invalid_request - unauthorized - forbidden - insufficient_scope - not_found - conflict - idempotency_key_reused - idempotency_request_in_progress - booking_disabled - booking_requires_confirmation - slot_unavailable - rate_limited - rate_limit_unavailable - method_not_allowed - internal_error - business_required - key_owner_inactive - plan_limit_reached message: type: string details: type: array items: type: object properties: path: type: string message: type: string required: - path - message additionalProperties: false required: - code - message additionalProperties: false required: - error additionalProperties: false securitySchemes: bearerAuth: type: http scheme: bearer description: >- An API key from Settings > API keys (lsk_...), which acts on its own business, or a platform key from the PLATFORM_API_KEYS setting (lsp_...), which onboards and manages businesses. Scopes: business:read, business:write, calls:read, contacts:read, contacts:write, appointments:read, appointments:write, messages:read, knowledge:read, knowledge:write, webhooks:manage, billing:manage, phone_numbers:manage, team:manage, businesses:create, users:create. Only platform keys can hold businesses:create and users:create. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.