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agent402.tools Savings Goal Monthly Contribution Calculator
x402
agent402.tools Savings Goal Monthly Contribution Calculator is a paid API for AI agents from agent402.tools, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Calculates the required monthly savings contribution to reach a financial goal amount within a given time horizon using a PV-discount and loan-payment approach
Price / call$0.05
Success—
StatusUnknown
How this service works
Bundled execution of the Savings goal workflow - How much do I need to save each month to hit $X in N years? Pin down the required contribution with a clever PV-discount trick: discount the target back to today, then call loan-payment with the dis...
Output
Returns the required monthly savings contribution needed to reach the specified financial goal, computed by discounting the target back to present value and then applying a loan-payment formula. Includes the calculated monthly amount and supporting figures.
Example use cases
Example prompt
“How much do I need to save each month to hit $1,000,000 for retirement in 30 years, assuming a 7% annual return?”
Technical details
Endpoint
POSThttps://agent402.tools/api/skill/savings-goalWhen to prefer
Choose this endpoint when you need a quick, single-call computation of monthly savings contributions required to meet a named financial goal. It is especially useful when you want a combined workflow that handles the PV-discount trick and loan-payment formula in one bundled call rather than chaining multiple arithmetic endpoints. Best for personal finance assistants, retirement planning tools, or savings advisor agents.
Side effects
- Missing or unparseable goal string causes a 400 bad request
- Negative or zero time horizon results in computation error
- Implausible expected return values (e.g. >1.0 or negative) may cause errors or nonsensical results
- Payment failure (insufficient USDC balance) results in 402 error blocking execution
- Ambiguous goal description without a clear dollar amount may produce incorrect parsing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| goal | string | What you're saving for, with the target amount and time horizon (e.g. "save $1,000,000 for retirement in 30 years") |
| expectedReturn | string | Expected annual return as a decimal (default 0.07 = 7% for long-horizon equity; use 0.04 for bond-heavy or short-horizon goals) |
Output
Schema · Response
{
"type": "json",
"example": {
"args": {
"goal": "save $1,000,000 for retirement in 30 years",
"expectedReturn": "0.07"
},
"pack": "savings-goal",
"steps": [
{
"ok": true,
"slug": "compound-interest",
"result": {}
},
{
"ok": true,
"slug": "loan-payment",
"result": {}
},
{
"ok": true,
"slug": "npv",
"result": {}
},
{
"ok": true,
"slug": "irr",
"result": {}
}
],
"summary": "4/4 steps succeeded"
}
}Tags
x402
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