For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.

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get capabilities$(): Observable<Capability[]>

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get capabilities(): Capability[]

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call.capabilities$.subscribe((capabilities) => {
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  console.log('capabilities:', capabilities);
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});