Compound interest calculator
Compound interest calculator. Projects the ending value of an investment given a starting principal, monthly contributions, and an annual interest rate, compounded monthly over a chosen number of years.
10000 (raw units)
price
3
calls / 30d
1
unique payers
2026-08-30
updated
Provider
x402.outpimp.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "APer2AbhckyMWyJanW2MZ2eRLcpL9Lmhks8rkmXfqjRG",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "10000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"annualInterestRate": 0.07,
"initialInvestment": 10000,
"monthlyContribution": 200,
"years": 20
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"data": {
"endingValue": 144572.72045492515,
"params": {
"annualInterestRate": 0.07,
"initialInvestment": 10000,
"monthlyContribution": 200,
"years": 20
},
"totalContributions": 58000,
"totalGrowth": 86572.72045492515,
"yearlyBalances": [
13201.41786649044,
16634.266489404075,
20315.276016835352,
24262.386020637212,
28494.83292576237,
33033.243759878744,
37899.736680152215,
43118.02876711856,
48713.55161098314,
54713.57525366362,
61147.3410906128,
68046.20438012511,
75443.78705465242,
83376.14157886199,
91881.92665300699,
101002.5956179077,
110782.59847974403,
121269.59853923674,
132514.70468096953,
144572.72045492515
]
},
"ok": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"annualInterestRate": {
"description": "Annual interest rate, as a fraction (e.g. 0.07).",
"type": "number"
},
"initialInvestment": {
"description": "Starting principal.",
"type": "number"
},
"monthlyContribution": {
"description": "Recurring monthly contribution.",
"type": "number"
},
"years": {
"description": "Number of years to project (1-100).",
"type": "number"
}
},
"required": [
"initialInvestment",
"years",
"monthlyContribution",
"annualInterestRate"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "x402_api_vendor",
"s": [
"cdp_sdk_server"
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"eip2612GasSponsoring": {},
"erc20ApprovalGasSponsoring": {}
}Use it
curl
curl "https://x402.outpimp.com/compoundInterestCalculator" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://x402.outpimp.com/compoundInterestCalculator");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://x402.outpimp.com/compoundInterestCalculator")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/8403.json, and this resource appears in /discovery/resources and /discovery/search.