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finmath Bond Convexity Calculator
x402
finmath Bond Convexity Calculator is a paid API for AI agents from finmath.qzqh5rrbkz.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Computes the convexity of a bond given face value, coupon rate, yield, maturity, and payment frequency
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic finance and crypto math for AI agents: TradFi (NPV, IRR, XIRR, Black-Scholes + Greeks, bonds, VaR, Sharpe) and DeFi (impermanent loss, perp liquidation, funding, Uniswap v3, health factor, cost basis). Exact, model-free arithmetic that LLMs get wrong — priced per call in USDC.
Output
Returns a result object containing the computed bond convexity value (a dimensionless measure of the curvature of the price-yield relationship), plus a meta object with calculation details such as inputs echoed back and any auxiliary values.
Example use cases
Example prompt
“Calculate the convexity of a $1,000 face value bond with a 5% annual coupon rate, 4% annual yield, 10 years to maturity, and semi-annual payments (freq=2).”
Technical details
Endpoint
POSThttps://finmath.qzqh5rrbkz.workers.dev/v1/bond_convexityWhen to prefer
Use this endpoint when you need exact, deterministic bond convexity arithmetic rather than relying on LLM estimation. Ideal for interest rate risk management, duration-convexity hedging strategies, bond pricing analytics, or any fixed income workflow where numerical precision is critical.
Side effects
- Missing required fields (face, coupon_rate, or annual_yield) returns a validation error
- Negative yield or coupon values may produce unexpected results or errors
- Zero years to maturity or zero frequency may cause division-by-zero
- Payment is required in USDC via x402 protocol; missing payment returns 402 Payment Required
Input
{
"face": 1000,
"freq": 2,
"years": 10,
"coupon_rate": 0.05,
"annual_yield": 0.04
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| facerequired | number | face |
| freq | number | freq |
| years | number | years |
| coupon_raterequired | number | coupon_rate |
| annual_yieldrequired | number | annual_yield |
Output
{
"meta": {
"tool": "bond_convexity",
"disclaimer": "Deterministic calculation utility. Not financial, investment, or trading advice.",
"deterministic": true
},
"result": 75.47246678915187
}Schema · Response
| Field | Type | Description |
|---|---|---|
| metarequired | object | |
| resultrequired | — |
Tags
x402
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