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Agent402 UK Money Math
x402
Agent402 UK Money Math is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).
Performs exact decimal money arithmetic (add, subtract, multiply, divide, allocate, round) at ISO 4217 minor-unit precision using string-based amounts to avoid floating-point errors.
Price / call$0.001
Success—
StatusUnknown
How this service works
Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.
Output
A JSON object containing the operation performed, the exact result as a decimal string (or an array of strings for allocate), the scale used, currency code, and a validity flag confirming the arithmetic is sound.
Example use cases
Invoice line item total
“Multiply $24.99 by 7 units using half_up rounding in USD and give me the exact total for the invoice line — no floating point errors.”
Weighted payout allocation
“Allocate $1000.00 among three partners in a 2:3:5 ratio in USD — I need exact decimal strings for each payout so the amounts sum perfectly.”
Tax multiplier on price
“Multiply $49.95 by 1.2 for UK VAT using half_even rounding in GBP and return the exact amount I should charge the customer.”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/math/money?utm_source=zero.xyzWhen to prefer
Use this endpoint whenever financial precision is mandatory and floating-point representation errors are unacceptable — e.g. invoice totals, tax computation, fee splits, payout allocation, or any arithmetic where cents must balance exactly. Prefer it over general-purpose calculators or code execution when you need deterministic, auditable money arithmetic without writing or running code.
Side effects
- Non-numeric or malformed string operands return a validation error
- Division by zero returns an error result
- Unsupported operator value causes rejection
- Parts count outside 1-100 range for allocate is rejected
- Mismatched or unknown ISO 4217 currency code may default scale or error
- Missing required operand fields return a schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| a | string | Left operand (money decimal string) |
| b | string | Right operand or factor/divisor |
| op | string | add | sub | mul | div | allocate | round |
| mode | string | half_up | half_even | floor | ceil | down | up (mul/div/round) |
| parts | number | allocate into N equal parts (1-100); number preferred (string also accepted) |
| scale | string | Optional override 0-18 minor digits |
| amount | string | For allocate|round|mul|div alias of a |
| ratios | array | allocate by weights e.g. [1,2,1] |
| amounts | array | For add: list of decimal strings |
| currency | string | ISO 4217 code for scale (JPY=0, USD/GBP=2, BHD=3; USDC=6). Default scale 2 |
Output
Schema · Response
{
"type": "json",
"example": {
"op": "allocate",
"sum": "10.00",
"scale": 2,
"valid": true,
"results": [
"3.34",
"3.33",
"3.33"
],
"currency": "USD"
}
}Tags
x402
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