> ## Documentation Index > Fetch the complete documentation index at: https://docs.mixpeek.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Subscribe To Plan > Subscribe to a paid plan via Stripe Checkout. Creates a Stripe Checkout Session in subscription mode. After payment, the organization's account_type is updated via webhook. If the organization already has an active subscription, the plan is changed inline (upgrade/downgrade with proration) instead of creating a new checkout session. **Available Plans** (tier minimum is a billing floor; usage above it bills automatically): - `managed_build`: Managed Mixpeek Build — $25/mo min, 100K objects/mo - `managed_scale`: Managed Mixpeek Scale — $250/mo min, 1M objects/mo - `mvs_build`: MVS Standalone Build — $25/mo min, 1M vectors - `mvs_scale`: MVS Standalone Scale — $250/mo min, 25M vectors **Discounts:** each non-empty `onboarding_answers` field takes $5 off the first invoice (max $10). An explicit `promo_code` is validated and pre-applied; when both are sent the promo takes checkout's single discount slot and the onboarding credit lands on the customer balance. Without either, Stripe's own promo-code field is enabled at checkout. ## OpenAPI ````yaml post /v1/organizations/billing/subscribe openapi: 3.1.0 info: title: Mixpeek API description: >- This is the Mixpeek API, providing access to various endpoints for data processing and retrieval. termsOfService: https://mixpeek.com/terms contact: name: Mixpeek Support url: https://mixpeek.com/contact email: info@mixpeek.com version: '0.82' servers: - url: https://api.mixpeek.com description: Production security: - BearerAuth: [] paths: /v1/organizations/billing/subscribe: post: tags: - Organization Billing summary: Subscribe To Plan description: >- Subscribe to a paid plan via Stripe Checkout. Creates a Stripe Checkout Session in subscription mode. After payment, the organization's account_type is updated via webhook. If the organization already has an active subscription, the plan is changed inline (upgrade/downgrade with proration) instead of creating a new checkout session. **Available Plans** (tier minimum is a billing floor; usage above it bills automatically): - `managed_build`: Managed Mixpeek Build — $25/mo min, 100K objects/mo - `managed_scale`: Managed Mixpeek Scale — $250/mo min, 1M objects/mo - `mvs_build`: MVS Standalone Build — $25/mo min, 1M vectors - `mvs_scale`: MVS Standalone Scale — $250/mo min, 25M vectors **Discounts:** each non-empty `onboarding_answers` field takes $5 off the first invoice (max $10). An explicit `promo_code` is validated and pre-applied; when both are sent the promo takes checkout's single discount slot and the onboarding credit lands on the customer balance. Without either, Stripe's own promo-code field is enabled at checkout. operationId: subscribe_to_plan_v1_organizations_billing_subscribe_post parameters: [] requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SubscribeRequest' responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/SubscribeResponse' '400': description: Bad Request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Not Found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - BearerAuth: [] components: schemas: SubscribeRequest: properties: plan: type: string title: Plan description: >- Plan slug: managed_build, managed_scale, mvs_build, mvs_scale. The tier minimum is a billing floor — usage above it bills automatically at the plan's rates. examples: - managed_build - mvs_scale success_url: anyOf: - type: string - type: 'null' title: Success Url description: Redirect URL after successful subscription default: https://studio.mixpeek.com/billing?subscription=success cancel_url: anyOf: - type: string - type: 'null' title: Cancel Url description: Redirect URL if subscription is cancelled default: https://studio.mixpeek.com/billing?subscription=cancelled onboarding_answers: anyOf: - $ref: '#/components/schemas/OnboardingAnswers' - type: 'null' description: >- Optional signup questions; each non-empty answer = $5 off the first invoice (max $10). promo_code: anyOf: - type: string maxLength: 64 - type: 'null' title: Promo Code description: >- Optional promo code to pre-apply at checkout. When combined with onboarding answers, the promo takes checkout's single discount slot and the onboarding credit lands on the customer balance. type: object required: - plan title: SubscribeRequest description: Request to subscribe to a plan. SubscribeResponse: properties: checkout_url: type: string title: Checkout Url description: Stripe Checkout URL for subscription examples: - https://checkout.stripe.com/c/pay/cs_live_abc123 session_id: type: string title: Session Id description: Stripe Checkout Session ID (empty string for inline upgrades) examples: - cs_live_abc123 - '' type: object required: - checkout_url - session_id title: SubscribeResponse description: Response with Stripe Checkout Session URL for subscription. ErrorResponse: properties: success: type: boolean title: Success description: Always false for error responses default: false status: type: integer title: Status description: HTTP status code for this error error: $ref: '#/components/schemas/ErrorDetail' description: Error details payload type: object required: - status - error title: ErrorResponse description: Error response model. examples: - error: details: id: ns_123 resource: namespace message: Namespace not found type: NotFoundError status: 404 success: false HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError OnboardingAnswers: properties: building: anyOf: - type: string maxLength: 2000 - type: 'null' title: Building description: What are you building? referral_source: anyOf: - type: string maxLength: 500 - type: 'null' title: Referral Source description: How did you hear about Mixpeek? type: object title: OnboardingAnswers description: |- Optional signup questions — each non-empty answer takes $5 off the first invoice (max $10). Answers are persisted for GTM attribution. ErrorDetail: properties: message: type: string title: Message description: Human-readable error message type: type: string title: Type description: Stable error type identifier (machine-readable) code: anyOf: - type: string - type: 'null' title: Code description: >- Fine-grained error code for programmatic handling (e.g., namespace_name_taken, feature_extractor_not_found). Present only when consumers may need to branch on a specific error condition. details: anyOf: - additionalProperties: true type: object - type: 'null' title: Details description: >- Optional structured details to help debugging (validation errors, IDs, etc.) type: object required: - message - type title: ErrorDetail description: Error detail model. 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 securitySchemes: BearerAuth: type: http scheme: bearer description: >- Mixpeek API key, sent as `Authorization: Bearer mxp_sk_...`. Create one in Studio under Settings → API Keys, or with an admin key via `POST /v1/organizations/users/{user_email}/api-keys`. A missing header returns 403; an invalid or revoked key returns 401. ````