danabra.mov
my blog https://overreacted.io
oopsie
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public/introducing-rsc-explorer/index.md
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public/introducing-rsc-explorer/index.md
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title: Introducing RSC Explorer
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date: '2025-12-19'
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spoiler: My new hobby project.
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bluesky: https://bsky.app/profile/danabra.mov/post/3mabn2f236s2f
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---
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In the past few weeks, since the disclosure of the [critical security vulnerability in React Server Components (RSC)](https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components), there's been a lot of interest in the RSC protocol.
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Now let's see the client *referring* to a piece of code exposed by the server.
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Here, `greet` is a *Server Action*, exposed with `'use server'` as an endpoint. It's passed as a prop to the client `Form` component that sees it as an `async` function.
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Here, `greet` is a *Server Action*, exposed with `'use server'` as an endpoint. It's passed as a prop to the Client `Form` component that sees it as an `async` function.
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Press the big yellow "step" button three times:
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