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A link card for a hosted Page: title, version chip, an Open button, and an inline Preview inside the app. We create one for you whenever a page block is hosted, and you can send one yourself to link a Page you already have.
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string
required
"page_preview"
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string
required
The Page’s id.
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string
The Page’s link, https:// only. Without it the card has nothing to open and shows “Unavailable”. When you send the block yourself, pass the url from the Pages API response.
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integer
The version to show in the chip. With pinned, the card opens exactly this version.
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boolean
default:"false"
false opens whatever the Page’s current version is, so a card in an old message always shows the latest revision. true locks the card to version through the permanent /v/{n} URL.
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string
Up to 150 characters. Without it the card says “Page”.
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string
Plain text under the title, up to 300 characters.
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string
The Page’s slug. Informational, and filled in on the cards we create.
We store the card exactly as you send it. page_id is not looked up or expanded at send time, so a card is only as good as the url you put on it. Take it from the Pages API rather than typing it.
In the embedded widget the card offers Open only. The inline preview is an app-side feature.