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bad_pagination

The most common cause is limit out of the supported range:

• ?limit=0 → invalid; minimum is 1.
• ?limit=999 → above the maximum 200.
• ?limit=foo → not an integer.

We clamp silently in some cases (e.g. limit=300 → limit=200) but emit this code when the value is so wrong it’d be misleading to silently fix. Recover by sending a valid limit in [1, 200] and (optionally) a fresh cursor. See conventions.md §pagination for the allowed ranges per endpoint.