The code you embed is open source

Our React library, embeddable widget, and MCP server are MIT-licensed on GitHub. Read them, file issues, contribute. The platform is hosted, so you run no servers; the code you ship is yours to audit.

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@astrocal/react

React provider, the useAstrocal hook, and the AstrocalWidget component. MIT licensed.

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@astrocal/widget

Embeddable vanilla JS booking widget with Shadow DOM isolation.

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@astrocal/mcp-server

MCP server that lets AI agents check availability and book meetings.

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Explore the source code on GitHub

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