openapi: 3.0.1 info: title: HubSpot CRM App Uninstalls description: Basepom for all HubSpot Projects version: 2026-09 x-hubspot-product-tier-requirements: marketing: FREE sales: FREE service: FREE cms: FREE commerce: FREE crmHub: FREE dataHub: FREE x-hubspot-api-use-case: Ideal when a customer has off-boarded from your platform but the integration remains installed in their HubSpot account. This API lets developers clean up stale installs, reduce unnecessary API traffic, and maintain accurate app state across systems. x-hubspot-introduction: This API allows public application developers to uninstall a customer’s account from their app. It is useful for cleanup when a customer stops using it and ensure there are no further incurred processing costs. Successful requests will receive a 204 response which also sends a notification email to account's Admins. servers: - url: https://api.hubapi.com tags: - name: Basic paths: /appinstalls/2026-09/external-install: delete: tags: - Basic summary: Uninstall app description: Use this endpoint to uninstall your app from a customer's HubSpot account. If successful, this endpoint will return a 204 and the customer will receive an email notification that the developer has uninstall the app from their account. operationId: delete-/appinstalls/2026-09/external-install parameters: [] responses: '204': description: No content content: {} default: description: '' $ref: '#/components/responses/Error' security: - oauth2: - oauth-access components: schemas: Error: required: - category - correlationId - message type: object properties: category: type: string description: The error category context: type: object additionalProperties: type: array items: type: string description: Context about the error condition example: '{invalidPropertyName=[propertyValue], missingScopes=[scope1, scope2]}' correlationId: type: string description: A unique identifier for the request. Include this value with any error reports or support tickets format: uuid example: aeb5f871-7f07-4993-9211-075dc63e7cbf errors: type: array description: further information about the error items: $ref: '#/components/schemas/ErrorDetail' links: type: object additionalProperties: type: string description: A map of link names to associated URIs containing documentation about the error or recommended remediation steps message: type: string description: A human readable message describing the error along with remediation steps where appropriate example: An error occurred subCategory: type: string description: A specific category that contains more specific detail about the error description: Represents an error response returned by the API when an operation fails. This component is used in various endpoints to provide detailed information about the error encountered. example: message: Invalid input (details will vary based on the error) correlationId: aeb5f871-7f07-4993-9211-075dc63e7cbf category: VALIDATION_ERROR links: knowledge-base: https://www.hubspot.com/products/service/knowledge-base ErrorDetail: required: - message type: object properties: code: type: string description: The status code associated with the error detail context: type: object additionalProperties: type: array items: type: string description: Context about the error condition example: '{missingScopes=[scope1, scope2]}' in: type: string description: The name of the field or parameter in which the error was found. message: type: string description: A human readable message describing the error along with remediation steps where appropriate subCategory: type: string description: A specific category that contains more specific detail about the error description: Represents detailed information about an error that occurred in the API. This component is used to provide additional context and specifics about errors, typically as part of an error response. responses: Error: description: An error occurred. content: '*/*': schema: $ref: '#/components/schemas/Error' securitySchemes: developer_hapikey: type: apiKey name: hapikey in: query oauth2: type: oauth2 flows: authorizationCode: authorizationUrl: https://app.hubspot.com/oauth/authorize tokenUrl: https://api.hubapi.com/oauth/v1/token scopes: oauth-access: '' private_apps: type: apiKey name: private-app in: header private_apps_legacy: type: apiKey name: private-app-legacy in: header x-hubspot-product-tier-requirements: marketing: FREE sales: FREE service: FREE cms: FREE commerce: FREE crmHub: FREE dataHub: FREE