> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kash.bot/llms.txt
> Use this file to discover all available pages before exploring further.

# AMOUNT_TOO_LARGE

> HTTP 400 — Amount too large

**HTTP status:** 400 · **Title:** "Amount too large"

## When it fires

`amount` exceeds `MAX_USDC_PER_TRADE`. This is a defence-in-depth check distinct from your key's per-trade and daily spending limits — it catches obvious mistakes regardless of your tier.

## Why it happens

The most common cause is a **decimal-place mistake**: passing `1000000000000000000` ("1 USDC in 18-decimal atomic units") instead of `1` ("1 USDC in human units"). The public API takes amounts in **human units** (the same string a person would type), not 18-decimal atomic units.

## How to fix

* Pass `amount` as a string of the human-unit USDC value: `"100"`, `"0.50"`, `"2500"`.
* If you have an atomic value, divide by 10^6 (USDC is 6 decimals on-chain, but our API normalises to "USDC the user thinks about").
* For sustained high-value flows above `MAX_USDC_PER_TRADE`, request a tier upgrade — your key's `per_trade_limit_usdc` can be raised, but the absolute cap is a platform-level safety net.

## Related codes

* [`SPENDING_LIMIT_EXCEEDED`](./SPENDING_LIMIT_EXCEEDED.md) — your key's per-trade or daily limit, separate from the platform cap
* [`VALIDATION_FAILED`](./VALIDATION_FAILED.md) — generic validation failure