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HTTP status: 400 · Title: “Amount too large”

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When it fires

amount on POST /v1/trades exceeds the platform-wide per-trade ceiling. This safety net is separate from your key’s per-trade and daily spending limits and applies whatever your tier.

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Why it happens

Almost always a units mistake: an amount in atomic units, such as 1000000 (1 USDC in 6-decimal units) or 1000000000000000000 (1 in 18-decimal units), sent where the API expects a human-readable USDC value such as "1".

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How to fix

  • Send amount as a string holding the USDC value a person would type: "100", "0.50", "2500". Up to 6 decimal places are allowed.
  • If you hold an atomic USDC value, divide by 10^6 first.
  • Your key’s own per-trade limit is lower than this ceiling; see SPENDING_LIMIT_EXCEEDED for how to raise it.