betteroff.finance WebMCP Tools, Schemas & Agent Capabilities

betteroff.finance

live Unverified (seed import) Finance & Crypto 22 tools imperative implementation

BetterOff keeps household accounts and financial records current, then shows what changed, what is coming, and what needs attention.

First seen 2026-08-31 · Last seen 2026-08-31 · Source: webmcp.com

Answer 5 · Act 16 · Transact 1 · Score: Not yet scored

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calc_compound_interest

act imperative

Calculates compound interest from principal, monthly contributions, annual return, years, and annual, monthly, weekly, or daily compounding.

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Input schema

Property	Type	Required	Description
`principal`	number	no	Initial principal
`monthlyContribution`	number	no	Monthly contribution
`annualRatePct`	number	no	Annual return (%) — Nominal, before inflation.
`years`	integer	no	Time horizon (years)
`compoundingFrequency`	—	no	Compounding frequency
`annualFeePct`	number	no	Annual fees (%) — Deducted from the assumed annual return.
`contributionTiming`	string	no	Contribution timing — Whether each monthly contribution is added before or after that month's growth.

Raw JSON schema

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "principal": {
      "default": 10000,
      "description": "Initial principal",
      "type": "number",
      "minimum": 0,
      "maximum": 1000000000
    },
    "monthlyContribution": {
      "default": 500,
      "description": "Monthly contribution",
      "type": "number",
      "minimum": 0,
      "maximum": 1000000
    },
    "annualRatePct": {
      "default": 7,
      "description": "Annual return (%) — Nominal, before inflation.",
      "type": "number",
      "minimum": 0,
      "maximum": 100
    },
    "years": {
      "default": 20,
      "description": "Time horizon (years)",
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    },
    "compoundingFrequency": {
      "default": 12,
      "description": "Compounding frequency",
      "anyOf": [
        {
          "type": "number",
          "const": 1
        },
        {
          "type": "number",
          "const": 2
        },
        {
          "type": "number",
          "const": 4
        },
        {
          "type": "number",
          "const": 12
        },
        {
          "type": "number",
          "const": 52
        },
        {
          "type": "number",
          "const": 365
        }
      ]
    },
    "annualFeePct": {
      "default": 0,
      "description": "Annual fees (%) — Deducted from the assumed annual return.",
      "type": "number",
      "minimum": 0,
      "maximum": 20
    },
    "contributionTiming": {
      "default": "end",
      "description": "Contribution timing — Whether each monthly contribution is added before or after that month's growth.",
      "type": "string",
      "enum": [
        "beginning",
        "end"
      ]
    }
  },
  "additionalProperties": false
}