> ## Documentation Index > Fetch the complete documentation index at: https://mintfax.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Delete API Key > Permanently revokes and deletes an API key. Account-scoped keys can only be deleted via the dashboard. Requires an account-scoped key (`mfx_acct_...`). ## OpenAPI ````yaml /openapi.json delete /account/keys/{id} openapi: 3.1.0 info: title: mintfax API version: '1.0' description: >- Developer-first fax API. Send faxes with a single API call. ## Authentication Most endpoints require a Bearer token in the `Authorization` header. - **Account keys** (`mfx_acct_...`) access account-level endpoints (`/account`, `/account/balance`, `/account/transactions`, `/account/keys`). - **Environment keys** (`mfx_test_...` for test, `mfx_live_...` for live) access operational endpoints (`/environment`, `/faxes`, `/webhooks`, `/events`). - Registration endpoints (`POST /account/register` and `POST /account/register/verify`) do not require authentication. ## Base URL All API requests use `https://api.mintfax.com/v1` as the base URL. contact: name: mintfax Support email: support@mintfax.com url: https://mintfax.com/docs servers: - url: https://api.mintfax.com/v1 description: Production security: - bearerAuth: [] tags: - name: Account description: >- Account-level resources: registration, account info, balances, and API keys. - name: Environment description: >- Test and live environment configuration shared across all operational requests. - name: Fax description: Send, list, retrieve, resend, and purge faxes. - name: Events description: >- Read the immutable event log for everything that has happened in the environment. - name: Webhooks description: >- Manage webhook endpoints and inspect or replay individual delivery attempts. paths: /account/keys/{id}: delete: tags: - Account summary: Delete API Key description: >- Permanently revokes and deletes an API key. Account-scoped keys can only be deleted via the dashboard. Requires an account-scoped key (`mfx_acct_...`). operationId: deleteAccountKey parameters: - name: id in: path required: true schema: type: string responses: '204': description: No content '401': description: The provided API key is not recognised. content: application/json: schema: $ref: '#/components/schemas/Error' examples: api_key_invalid: value: error: api_key_invalid message: The provided API key is not recognised. action: check_credentials docs: https://mintfax.com/docs/errors/api-key-invalid '403': description: >- Account-level keys can only be created from the dashboard, not via API. content: application/json: schema: $ref: '#/components/schemas/Error' examples: acct_key_creation_dashboard_only: value: error: acct_key_creation_dashboard_only message: >- Account-level keys can only be created from the dashboard, not via API. action: use_dashboard docs: >- https://mintfax.com/docs/errors/acct-key-creation-dashboard-only account_not_activated: value: error: account_not_activated message: >- Live calls require account activation. Complete a first credit purchase to activate. action: activate_account docs: https://mintfax.com/docs/errors/account-not-activated key_not_scoped_for_account: value: error: key_not_scoped_for_account message: >- This API key cannot access account-level endpoints. Use an mfx_acct_ key. action: use_account_key docs: https://mintfax.com/docs/errors/key-not-scoped-for-account '404': description: The requested resource was not found. content: application/json: schema: $ref: '#/components/schemas/Error' examples: not_found: value: error: not_found message: The requested resource was not found. action: verify_id docs: https://mintfax.com/docs/errors/not-found '500': description: >- An unexpected error occurred. Please retry; if the problem persists, contact support. content: application/json: schema: $ref: '#/components/schemas/Error' examples: internal_server_error: value: error: internal_server_error message: >- An unexpected error occurred. Please retry; if the problem persists, contact support. action: retry_or_contact_support docs: https://mintfax.com/docs/errors/internal-server-error components: schemas: Error: type: object properties: error: type: string description: Machine-readable error code. example: insufficient_balance message: type: string description: Human-readable description. example: Insufficient balance for this operation. action: type: string description: Suggested next step for the caller. example: top_up_balance docs: type: string format: uri description: URL to the docs entry for this error code. example: https://mintfax.com/docs/errors/insufficient-balance request_id: type: string description: >- Unique identifier for this API request, also returned in the X-Request-Id response header. Include this value in support requests for fast triage. pattern: ^req_[0-9A-HJKMNP-TV-Z]{26}$ example: req_01J9XYZQ8KH7B3R0WXAZP8VW6F context: type: object description: Error-specific extra fields (e.g. balances, validation errors). additionalProperties: [] required: - error - message - action - docs - request_id title: Error securitySchemes: bearerAuth: type: http description: |- API key as Bearer token. Use an account key (`mfx_acct_...`) for `/account/*` endpoints, and an environment key (`mfx_test_...` for sandbox, `mfx_live_...` for live) for `/environment/*`, `/faxes`, `/webhooks`, and `/events`. scheme: bearer ````