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## Playground-only authentication descriptions

api-reference

You can now add auth instructions that appear only in the API Explorer, such as where to generate a token, without changing the Authorization description in your API Reference. Set `x-fern-playground-description` on a security scheme in your OpenAPI spec, or `playground-docs` on an auth scheme in a Fern Definition. The text renders as an info callout beneath the matching auth input and supports links, inline code, and paragraphs.

Read the docs