> ## Documentation Index > Fetch the complete documentation index at: https://docs.gennia.ai/llms.txt > Use this file to discover all available pages before exploring further. # Update coupon > Limited update: only `name`, `active`, `maxUses`, `validUntil` can be changed (Stripe limitation). To change the code, discount, duration, scope or plans → delete and re-create. `active` is synced with the Stripe promotion code. ## OpenAPI ````yaml /api-reference/openapi.json patch /public/api/v1/billing/coupons/{couponPublicId} openapi: 3.1.0 info: contact: email: support@gennia.ai name: Gennia Support url: https://gennia.ai description: >- Workspace-scoped API authenticated via workspace API key (header `X-Api-Key: gsk_...` or `Authorization: Bearer gsk_...`). title: Gennia Public API version: v1 servers: - description: Production url: https://api.gennia.ai security: - workspaceApiKey: [] tags: - description: Slash commands available inside the agent chat. name: Agent Commands - description: Link skills to an agent. name: Agent Skills - description: Read/rename/delete workspace knowledge sources. name: Knowledge Sources - description: Link knowledge sources to an agent. name: Agent Knowledge Sources - description: Workspace CRUD for HTTP/DB/Custom tools. name: HTTP Tools - description: Read/write the agent's model selection + capabilities. name: Agent Model - description: Discover trigger types available for Native MCP toolkits. name: Native MCP Triggers - description: Discover and toggle capability features. name: Agent Features - description: Hub access settings. name: Hub Access - description: Read conversation history and delete conversations. name: Conversations - description: Send messages to a published agent. name: Messages - description: Workspace CRUD for External MCP servers. name: External MCPs - description: Hub billing — plans, coupons, credit packages. name: Billing - description: External links shown in the hub menu. name: Hub External Links - description: Link Native MCP (Composio) instances to an agent. name: Agent Native MCPs - description: Manage AI agents in the workspace bound to the API key. name: Agents - description: Read published version snapshots and restore. name: Agent Versions - description: Read/rename/delete workspace skills. name: Skills - description: Manage hub end-customers (client workspaces). name: Clients - description: Hub domain (subdomain) management. name: Hub Domain - description: Read/write the agent's prompt context. name: Agent Prompt - description: Scheduled / trigger-based runs of an agent. name: Agent Automations - description: Link HTTP/DB/Custom tools to an agent. name: Agent HTTP Tools - description: Hub identity, branding, logos and overall configuration. name: Hub - description: Discover AI models available to this workspace. name: AI Models - description: Discover channel types and their config schemas. name: Channel Types - description: Connect agents to messaging surfaces. name: Agent Channels - description: Link workspace-registered External MCP servers to an agent. name: Agent External MCPs - description: Workspace-scoped public API (API key authentication) name: Public API - description: Dynamic-prompt variable definitions. name: Agent Variables - description: Link sub-agents as delegation targets. name: Agent Sub-agents paths: /public/api/v1/billing/coupons/{couponPublicId}: patch: tags: - Billing summary: Update coupon description: >- Limited update: only `name`, `active`, `maxUses`, `validUntil` can be changed (Stripe limitation). To change the code, discount, duration, scope or plans → delete and re-create. `active` is synced with the Stripe promotion code. operationId: updateCoupon parameters: - in: path name: couponPublicId required: true schema: format: uuid type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/UpdatePublicCouponRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/PublicCouponDTO' description: OK '400': content: application/json: schema: $ref: '#/components/schemas/PublicCouponDTO' description: Validation failed; maxUses below current usage; unknown field '401': content: application/json: schema: $ref: '#/components/schemas/PublicCouponDTO' description: Missing or invalid API key '404': content: application/json: schema: $ref: '#/components/schemas/PublicCouponDTO' description: Coupon not found in this workspace security: - workspaceApiKey: [] components: schemas: UpdatePublicCouponRequest: description: >- Body for updating an existing coupon. Coupons are largely immutable post-creation; only name, active, maxUses and validUntil can change. properties: active: description: >- Activate or deactivate the coupon. Synced with the Stripe promotion code. example: true type: boolean maxUses: description: New maximum total redemptions. Must be >= current redemption count. example: 200 format: int32 minimum: 1 type: integer name: description: New internal display name for the coupon. example: Welcome 10% off maxLength: 100 minLength: 0 type: string validUntil: description: New end of the validity window. example: '2026-12-31T23:59:59Z' format: date-time type: string type: object PublicCouponDTO: properties: active: type: boolean applicablePlans: items: $ref: '#/components/schemas/PlanRef' type: array code: type: string createdAt: format: date-time type: string currency: type: string discountType: enum: - percentage - fixed_amount type: string discountValue: format: int32 type: integer duration: enum: - once - repeating - forever type: string durationMonths: format: int32 type: integer isExhausted: type: boolean isExpired: type: boolean maxUses: format: int32 type: integer name: type: string publicId: format: uuid type: string scope: enum: - hub - plans type: string stripeCouponId: type: string stripePromotionCodeId: type: string timesUsed: format: int32 type: integer updatedAt: format: date-time type: string validFrom: format: date-time type: string validUntil: format: date-time type: string type: object PlanRef: properties: billingIntervalMonths: format: int32 type: integer billingType: enum: - one_time - recurring type: string creditsIncluded: format: int32 type: integer currency: type: string name: type: string priceCents: format: int32 type: integer publicId: format: uuid type: string type: object securitySchemes: workspaceApiKey: in: header name: X-Api-Key type: apiKey ````