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Substack

Newsletter platform with an undocumented public archive endpoint (/api/v1/archive + per-post) that exposes post titles, dates, engagement, and full body text (no subscriber data).

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1 workflow use Substack

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Track a tool's hype curve across any Substack (no API key)

Count how often a tool or model is mentioned in a Substack's posts over time, so you can see a hype curve rise and fade, using only the public archive.

Substack· beginner