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Developer documents six undocumented Lemon Squeezy API pitfalls that cost days of work

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A developer spent two weeks building a dunning tool on the Lemon Squeezy API and lost three days to undocumented edge cases. Key issues included a misleading webhook payload type that silently returns wrong subscription IDs, and a status filter that returns HTTP 200 with empty results instead of an error when given invalid values. The platform also offers no developer-facing endpoint to manually retry failed payments, running its own four-attempt schedule over two weeks instead. Payment method update URLs embedded in webhook payloads are time-limited and expire before delayed follow-up emails can use them, requiring a fresh API fetch at send time. Additional gotchas include webhooks needing separate registration for Test and Live modes, and a silent 40-character cap on signing secrets.

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Developer documents six undocumented Lemon Squeezy API pitfalls that cost days of work · ShortSingh