Simple interest amount
Simple interest amount - Sequential input-change attribution: Change each input from baseline to final in declared field order, reporting each incremental effect; order dependent. Metric: Simple interest amount. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded sequential input-change attribution report.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://market.datapackvibe.com/x402/assistant-finance-simple-interest-waterfall
| Category | Code and developer |
|---|---|
| Provider host | market.datapackvibe.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-04 | valid payment request | 402 | $0.01 | 348 ms |
Example input (from the provider)
{
"body": {
"after": {
"annual_rate_percent": 5.5,
"principal": 11000,
"years": 2.2
},
"before": {
"annual_rate_percent": 5,
"principal": 10000,
"years": 2
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"after": {
"additionalProperties": false,
"default": {
"annual_rate_percent": 5.5,
"principal": 11000,
"years": 2.2
},
"properties": {
"annual_rate_percent": {
"default": 5,
"description": "Percent units: enter 5 for 5%, not 0.05",
"maximum": 100,
"minimum": -99,
"type": "number"
},
"principal": {
"default": 10000,
"description": "Amount in a consistent supplied currency and reporting period",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"years": {
"default": 2,
"description": "Amount in a consistent supplied currency and reporting period",
"maximum": 100,
"minimum": 0,
"type": "number"
}
},
"required": [
"principal",
"annual_rate_percent",
"years"
],
"type": "object"
},
"before": {
"additionalProperties": false,
"default": {
"annual_rate_percent": 5,
"principal": 10000,
"years": 2
},
"properties": {
"annual_rate_percent": {
"default": 5,
"description": "Percent units: enter 5 for 5%, not 0.05",
"maximum": 100,
"minimum": -99,
"type": "number"
},
"principal": {
"default": 10000,
"description": "Amount in a consistent supplied currency and reporting period",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"years": {
"default": 2,
"description": "Amount in a consistent supplied currency and reporting period",
"maximum": 100,
"minimum": 0,
"type": "number"
}
},
"required": [
"principal",
"annual_rate_percent",
"years"
],
"type": "object"
}
},
"required": [
"before",
"after"
],
"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"
}