Changelog

May 1, 2026

API catalog discovery

AI agents, MCP clients, and API catalog crawlers can now discover your APIs automatically. Every Fern Docs site exposes a standards-based (RFC 9727) /.well-known/api-catalog endpoint generated from your visible API Reference navigation.

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Custom URL actions on the Prompt component

You can now point <Prompt> actions at any AI tool, not just Cursor, Claude, and ChatGPT. Send readers to Perplexity, your own internal AI assistant, or any other URL.

Generate a TypeScript SDK
Generate a TypeScript SDK from my OpenAPI spec. Follow the [TypeScript SDK quickstart](https://buildwithfern.com/learn/sdks/generators/typescript/quickstart.md).
Markdown
1<Prompt
2  title="Generate a TypeScript SDK"
3  actions={[
4    { label: "Open in Perplexity", url: "https://www.perplexity.ai/search?q={prompt}", icon: "magnifying-glass" },
5    "cursor"
6  ]}
7>
8Generate a TypeScript SDK from my OpenAPI spec. Follow the [TypeScript SDK quickstart](https://buildwithfern.com/learn/sdks/generators/typescript/quickstart.md).
9</Prompt>
Read the docs