api-ninjas-com

api-ninjas-com Mortgage Calculator API

The Mortgage Calculator API provides detailed mortgage and other home financing payment information. It uses the standard mortgage calculation formulas to calculate interest and monthly/annual payments.

Documentation GitHub OpenAPI

Operations 1

GET /v1/mortgagecalculator Calculate mortgage payments #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Ninjas Mortgage Calculator API
  description: 'Combined OpenAPI specification for every API Ninjas endpoint. Requests go to https://api.api-ninjas.com with an `X-Api-Key` header; get a free key at https://api-ninjas.com/register. Human-readable docs: https://api-ninjas.com/api. Index for LLMs: https://api-ninjas.com/llms.txt.'
  version: 1.0.0
  contact:
    name: API Ninjas
    url: https://api-ninjas.com
  license:
    name: Proprietary
servers:
- url: https://api.api-ninjas.com
  description: API Ninjas Production
security:
- ApiKeyAuth: []
tags:
- name: Mortgage Calculator
  description: The Mortgage Calculator API provides detailed mortgage and other home financing payment information. It uses the standard mortgage calculation formulas to calculate interest and monthly/annual payments.
paths:
  /v1/mortgagecalculator:
    get:
      summary: Calculate mortgage payments
      description: Calculates monthly and annual mortgage payments and interest from a loan amount or home value and downpayment, plus optional HOA, tax and insurance. Requires `interest_rate`.
      operationId: calculateMortgage
      security:
      - ApiKeyAuth: []
      parameters:
      - name: loan_amount
        in: query
        description: Principal loan amount.
        required: false
        schema:
          type: integer
      - name: home_value
        in: query
        description: Total value of the home or asset. Must be greater than downpayment.
        required: false
        schema:
          type: integer
      - name: downpayment
        in: query
        description: Downpayment on the home or asset. Cannot exceed home_value.
        required: false
        schema:
          type: integer
      - name: interest_rate
        in: query
        description: Annual interest rate (in %). For example, a 3.5% interest rate would be 3.5. Cannot exceed 10000.
        required: true
        schema:
          type: number
      - name: duration_years
        in: query
        description: Duration of the loan in years. Must be between 1 and 10000. If not set, the default value is 30 years.
        required: false
        schema:
          type: integer
          default: 30
      - name: monthly_hoa
        in: query
        description: Monthly homeowner association fees.
        required: false
        schema:
          type: integer
      - name: annual_property_tax
        in: query
        description: Annual property tax owed.
        required: false
        schema:
          type: integer
      - name: annual_home_insurance
        in: query
        description: Annual homeowner's insurance bill.
        required: false
        schema:
          type: integer
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MortgageCalculatorResponse'
        '400':
          description: Bad Request
        '401':
          description: Unauthorized
        '500':
          description: Internal Server Error
      tags:
      - Mortgage Calculator
components:
  schemas:
    MortgageCalculatorResponse:
      type: object
      properties:
        monthly_payment:
          type: object
          properties:
            total:
              type: integer
            mortgage:
              type: integer
            property_tax:
              type: integer
            hoa:
              type: integer
            annual_home_ins:
              type: integer
        annual_payment:
          type: object
          properties:
            total:
              type: integer
            mortgage:
              type: integer
            property_tax:
              type: integer
            hoa:
              type: integer
            home_insurance:
              type: integer
        total_interest_paid:
          type: integer
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-Api-Key
externalDocs:
  description: API Ninjas documentation
  url: https://api-ninjas.com/api