openapi: 3.1.0 info: title: Help Scout Mailbox Conversations Webhooks API description: Minimal OpenAPI description for Help Scout's Mailbox API v2 covering core resources for conversations, threads, customers, mailboxes, users, teams, tags, workflows, and webhooks. Generated from public documentation; verify before production use. version: '2.0' contact: name: Help Scout Developer Documentation url: https://developer.helpscout.com/mailbox-api/ x-generated-from: https://developer.helpscout.com/mailbox-api/ x-generated-by: claude-crawl-2026-05-08 servers: - url: https://api.helpscout.net/v2 description: Help Scout Mailbox API production security: - oauth2: [] tags: - name: Webhooks paths: /webhooks: get: operationId: listWebhooks summary: List webhooks tags: - Webhooks responses: '200': description: Successful response content: application/json: schema: type: object post: operationId: createWebhook summary: Create webhook tags: - Webhooks requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/Webhook' responses: '201': description: Created components: schemas: Webhook: type: object properties: url: type: string events: type: array items: type: string secret: type: string securitySchemes: oauth2: type: oauth2 flows: clientCredentials: tokenUrl: https://api.helpscout.net/v2/oauth2/token scopes: {}