CalcFleet Loans API

The loans API from CalcFleet — 5 operation(s) for loans.

Operations 5

POST /api/v1/tools/student-loan-calculator Student Loan Payoff Calculator #
POST /api/v1/tools/loan-amortization-calculator Loan Amortization Calculator #
POST /api/v1/tools/heloc-calculator HELOC Payment Calculator (Draw + Repayment) #
POST /api/v1/tools/personal-loan-calculator Personal Loan Calculator with APR & Amortization #
POST /api/v1/tools/dti-calculator Debt-to-Income (DTI) Ratio Calculator #

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OpenAPI Specification

calcfleet-com-loans-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Calcfleet Com Loans API
  version: 1.0.0
  contact:
    name: CalcFleet Developers
    url: https://calcfleet.com/developers
  license:
    name: CalcFleet API Terms
    url: https://calcfleet.com/developers
  description: 'Operations tagged loans across 2 of this provider''s published API definitions: calcfleet-com-openapi.json, calcfleet-com-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://calcfleet.com
  description: 'First-party API — free anonymous trial; optional Authorization: Bearer cf_… key for higher rate limits.'
tags:
- name: loans
paths:
  /api/v1/tools/student-loan-calculator:
    post:
      operationId: studentLoanCalculator
      summary: Student Loan Payoff Calculator
      description: See exactly how many months until you pay off your student loans, how much extra payments save in interest, and whether refinancing makes financial sense.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                balance:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 2000000
                annualRatePct:
                  type: number
                  minimum: 0
                  maximum: 30
                monthlyPayment:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 100000
                extraMonthly:
                  type: number
                  minimum: 0
                  maximum: 100000
                refinanceRatePct:
                  default: null
                  anyOf:
                  - type: number
                    minimum: 0
                    maximum: 30
                  - type: 'null'
              required:
              - balance
              - annualRatePct
              - monthlyPayment
              - extraMonthly
              - refinanceRatePct
              additionalProperties: false
      responses:
        '200':
          description: Successful calculation result.
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: object
                    description: Structured calculation output (fields vary per calculator).
                required:
                - result
        '400':
          description: Invalid input — the issues array contains Zod validation errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  issues:
                    type: array
                    items:
                      type: object
                required:
                - error
                - issues
        '403':
          description: 'Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.'
        '404':
          description: Unknown tool slug.
      tags:
      - loans
    servers:
    - url: https://calcfleet.com
      description: 'First-party API — free anonymous trial; optional Authorization: Bearer cf_… key for higher rate limits.'
  /api/v1/tools/loan-amortization-calculator:
    post:
      operationId: loanAmortizationCalculator
      summary: Loan Amortization Calculator
      description: Get your full loan amortization schedule instantly. See how each payment splits between interest and principal, and how extra payments cut total interest paid.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                loanAmount:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 100000000
                annualRatePct:
                  type: number
                  minimum: 0
                  maximum: 30
                termMonths:
                  type: integer
                  exclusiveMinimum: 0
                  maximum: 600
                extraMonthly:
                  type: number
                  minimum: 0
                  maximum: 1000000
              required:
              - loanAmount
              - annualRatePct
              - termMonths
              - extraMonthly
              additionalProperties: false
      responses:
        '200':
          description: Successful calculation result.
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: object
                    description: Structured calculation output (fields vary per calculator).
                required:
                - result
        '400':
          description: Invalid input — the issues array contains Zod validation errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  issues:
                    type: array
                    items:
                      type: object
                required:
                - error
                - issues
        '403':
          description: 'Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.'
        '404':
          description: Unknown tool slug.
      tags:
      - loans
    servers:
    - url: https://calcfleet.com
      description: 'First-party API — free anonymous trial; optional Authorization: Bearer cf_… key for higher rate limits.'
  /api/v1/tools/heloc-calculator:
    post:
      operationId: helocCalculator
      summary: HELOC Payment Calculator (Draw + Repayment)
      description: Calculate your HELOC draw and repayment payments. See the payment shock when interest-only switches to fully amortized, plus total interest across both phases.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                homeValue:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 100000000
                mortgageBalance:
                  type: number
                  minimum: 0
                  maximum: 100000000
                cltvPct:
                  type: number
                  minimum: 1
                  maximum: 100
                drawBalance:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 10000000
                annualRatePct:
                  type: number
                  minimum: 0
                  maximum: 30
                drawTermMonths:
                  type: integer
                  exclusiveMinimum: 0
                  maximum: 360
                repayTermMonths:
                  type: integer
                  exclusiveMinimum: 0
                  maximum: 360
              required:
              - homeValue
              - mortgageBalance
              - cltvPct
              - drawBalance
              - annualRatePct
              - drawTermMonths
              - repayTermMonths
              additionalProperties: false
      responses:
        '200':
          description: Successful calculation result.
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: object
                    description: Structured calculation output (fields vary per calculator).
                required:
                - result
        '400':
          description: Invalid input — the issues array contains Zod validation errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  issues:
                    type: array
                    items:
                      type: object
                required:
                - error
                - issues
        '403':
          description: 'Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.'
        '404':
          description: Unknown tool slug.
      tags:
      - loans
    servers:
    - url: https://calcfleet.com
      description: 'First-party API — free anonymous trial; optional Authorization: Bearer cf_… key for higher rate limits.'
  /api/v1/tools/personal-loan-calculator:
    post:
      operationId: personalLoanCalculator
      summary: Personal Loan Calculator with APR & Amortization
      description: Calculate your personal loan monthly payment, total interest, and true effective APR including any origination fee. Full amortization schedule included.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                principal:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 1000000
                annualRatePct:
                  type: number
                  minimum: 0
                  maximum: 60
                termMonths:
                  type: integer
                  exclusiveMinimum: 0
                  maximum: 360
                originationFeePct:
                  type: number
                  minimum: 0
                  maximum: 10
              required:
              - principal
              - annualRatePct
              - termMonths
              - originationFeePct
              additionalProperties: false
      responses:
        '200':
          description: Successful calculation result.
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: object
                    description: Structured calculation output (fields vary per calculator).
                required:
                - result
        '400':
          description: Invalid input — the issues array contains Zod validation errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  issues:
                    type: array
                    items:
                      type: object
                required:
                - error
                - issues
        '403':
          description: 'Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.'
        '404':
          description: Unknown tool slug.
      tags:
      - loans
    servers:
    - url: https://calcfleet.com
      description: 'First-party API — free anonymous trial; optional Authorization: Bearer cf_… key for higher rate limits.'
  /api/v1/tools/dti-calculator:
    post:
      operationId: dtiCalculator
      summary: Debt-to-Income (DTI) Ratio Calculator
      description: Calculate your front-end and back-end debt-to-income ratio instantly. See how your debt load compares against the 36%, 43% QM, and 50% lender thresholds.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                housingPayment:
                  type: number
                  minimum: 0
                  maximum: 100000
                otherMonthlyDebts:
                  type: number
                  minimum: 0
                  maximum: 100000
                grossMonthlyIncome:
                  type: number
                  exclusiveMinimum: 0
                  maximum: 1000000
              required:
              - housingPayment
              - otherMonthlyDebts
              - grossMonthlyIncome
              additionalProperties: false
      responses:
        '200':
          description: Successful calculation result.
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: object
                    description: Structured calculation output (fields vary per calculator).
                required:
                - result
        '400':
          description: Invalid input — the issues array contains Zod validation errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  issues:
                    type: array
                    items:
                      type: object
                required:
                - error
                - issues
        '403':
          description: 'Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.'
        '404':
          description: Unknown tool slug.
      tags:
      - loans
    servers:
    - url: https://calcfleet.com
      description: 'First-party API — free anonymous trial; optional Authorization: Bearer cf_… key for higher rate limits.'
x-refined-from:
- calcfleet-com-openapi.json
- calcfleet-com-openapi.yml