> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. # API Explorer control > Enable or disable the API Explorer using `x-fern-explorer` The [API Explorer](/learn/docs/api-references/api-explorer) is enabled by default for all endpoints. Use `x-fern-explorer` to disable or it globally or to override it per operation. This is commonly used to disable the Explorer for destructive operations, payment processing, or admin-only endpoints. ## Global To disable the API Explorer for your entire API, add `x-fern-explorer` at the root level: **`openapi.yml`** ```yaml title="openapi.yml" {2} openapi: 3.0.2 x-fern-explorer: false # Disable Explorer for all endpoints info: title: My API version: 1.0.0 paths: /payments: get: operationId: list_payments ``` ## Endpoint To control the API Explorer for individual endpoints, use `x-fern-explorer`: **`openapi.yml`** ```yaml title="openapi.yml" {4,9} paths: /payments: get: x-fern-explorer: true # Enable Explorer for safe read operation /payments/charge: post: x-fern-explorer: false # Disable to prevent accidental transactions ``` ## Combining global and endpoint-level settings You can combine both extensions to set a default behavior globally and override it for specific endpoints: **`openapi.yml`** ```yaml title="openapi.yml" {2,10} openapi: 3.0.2 x-fern-explorer: false # Disable Explorer globally info: title: My API version: 1.0.0 paths: /payments: get: operationId: list_payments x-fern-explorer: true # Enable Explorer for safe read operation /payments/charge: post: operationId: charge_payment # Remains disabled (global setting applies) ``` > Enable or disable the API Explorer using `x-fern-explorer`