> ## Documentation Index > Fetch the complete documentation index at: https://developers.huechat.ai/llms.txt > Use this file to discover all available pages before exploring further. # Fulfill a membership benefit receipt > Requires contacts:write, Customer CDP, Membership and a current administrator. The event key is replay-safe and fulfillment does not debit the benefit twice. ## OpenAPI ````yaml /api-reference/openapi.json post /api/v2/accounts/{accountId}/cdp/membership/members/{membershipId}/receipts/{receiptId}/fulfill openapi: 3.0.3 info: contact: name: HueChat support email: support@huechat.ai url: https://huechat.ai/contact description: >- Account-scoped REST API for HueChat: conversations, messages, contacts, inboxes, teams, agents, AI agents and knowledge, WhatsApp templates and broadcasts, workflows, chat menus, appointments and webhooks, authenticated with account-scoped API keys. Every route is scoped to your own account. license: name: Proprietary url: https://huechat.ai/terms termsOfService: https://huechat.ai/terms title: HueChat API version: 2.0.0 servers: - url: https://app.huechat.ai description: Production security: - bearerAuth: [] tags: - name: AI Agents description: >- Assistants you build to answer customers on their own: persona, language, guardrails, tools and a knowledge base, published to inboxes, replying in Arabic or English until they hand off to a human. Create, publish, test, monitor quality and roll back versions. - name: Agents description: The human agents on your account and their availability. - name: Broadcasts description: >- Send a WhatsApp template to a list of contacts from a CSV or saved audience, with scheduling, pause and resume, and delivery reports. - name: Chat Menus description: >- Numbered or button-driven menus a customer sees at the start of a conversation. - name: Contacts description: >- The people your team talks to: phone, email, name, custom attributes, labels and notes. One contact can have conversations on several channels. - name: Conversations description: >- A conversation is one thread between a contact and your team on one channel, with status, assignee, team, labels, priority and custom attributes. List, filter, search, assign, resolve and annotate them. - name: Inboxes description: >- Connected channels: a WhatsApp Business number, an Instagram or Messenger page, an email address or a website live-chat widget. Inboxes decide where a conversation comes from and who can see it. - name: Knowledge description: >- Documents, web pages and text that ground an AI agent's answers. Upload, point at a URL or paste text; HueChat indexes it and the agent cites it. - name: Messages description: >- Everything said inside a conversation: text, attachments, WhatsApp templates and interactive replies. Sending through the API delivers on the conversation's channel and shows in the inbox like any agent reply. - name: Outbound Webhooks description: >- Signed webhooks (v2): HMAC-SHA256 signature on every delivery, test events, delivery logs and secret rotation. - name: Teams description: Groups of agents used for assignment and reporting. - name: Templates description: >- Pre-approved WhatsApp message formats required by Meta for business-initiated messages. Create, sync from Meta, AI-generate, test-send and read analytics. - name: Webhooks description: >- Account webhooks (v1): a URL plus event subscriptions, as configured in the dashboard. Unsigned; prefer Outbound Webhooks for new integrations. - name: Workflows description: >- Automation flows built from triggers and steps: route, tag, reply, wait, hand off. Create, publish, version and toggle. paths: /api/v2/accounts/{accountId}/cdp/membership/members/{membershipId}/receipts/{receiptId}/fulfill: post: tags: - Customer CDP summary: Fulfill a membership benefit receipt description: >- Requires contacts:write, Customer CDP, Membership and a current administrator. The event key is replay-safe and fulfillment does not debit the benefit twice. parameters: - description: HueChat account ID name: accountId in: path required: true schema: type: integer - description: Membership UUID name: membershipId in: path required: true schema: type: string - description: Benefit receipt UUID name: receiptId in: path required: true schema: type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/huechat.CDPReceiptFulfillmentAPIRequest' description: Fulfillment evidence required: true responses: '200': description: OK content: application/json: schema: type: object additionalProperties: true '400': description: Bad Request content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '402': description: Payment Required content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '404': description: Not Found content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '409': description: Conflict content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '422': description: Unprocessable Entity content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' '429': description: Too Many Requests content: application/json: schema: $ref: '#/components/schemas/huechat.CDPAPIError' security: - ApiKeyAuth: [] components: schemas: huechat.CDPReceiptFulfillmentAPIRequest: type: object properties: event_key: type: string example: pos-redemption-5512 reason: type: string example: Benefit fulfilled at Riyadh branch version: type: integer example: 1 huechat.CDPAPIError: type: object properties: code: type: string example: plan_disabled error: type: string example: Record not found or unavailable feature: type: string example: customer_cdp securitySchemes: bearerAuth: type: http scheme: bearer description: >- Your personal access token from Settings → Profile, or a scoped API key (`hc_…`) created at Settings → Developer → API keys. Send it as `Authorization: Bearer `. ````