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Directory (6,648 Tools) API Catalog (JSON)
6,648 Production Algorithms • 99.99% Edge Uptime

Programmatic Calculation API for Proptech, Fintech & Clean Energy

Eliminate months of mathematical modeling and compliance engineering. Query verified real estate DSCR formulas, Section 48 ITC tax credit calculators, and CSI MasterFormat takeoff engines via low-latency REST endpoints.

Hobbyist / Evaluation
$0 /month

Perfect for prototyping, academic research, and personal tool building.

  • 100 API calls / month
  • Access to all 6,648 calculation endpoints
  • Cloudflare global edge routing (<20ms)
MOST POPULAR
Developer Pro
$29 /month

For active SaaS applications, CRM widgets, and automated underwriting pipelines.

  • 25,000 API calls / month
  • Commercial production license
  • RapidAPI Marketplace integration
  • 99.9% uptime SLA
Enterprise Scale
$99 /month

For proptech brokers, high-volume lending platforms, and solar EPC portals.

  • 250,000 API calls / month
  • White-label calculator embed rights
  • Priority email & webhook support
  • Custom math formula implementations
Interactive API Sandbox

Live Global Edge API Simulator & Metering Gauge

Monthly Usage: 14 / 25,000 Calls
POST
EDGE ONLINE • SUB-50MS
HTTP Request Payload (JSON)
HTTP Global Edge Response (200 OK) Status: 200 OK • Cloudflare Global Edge 
Click "Send Real Edge Request" to execute calculation across Cloudflare edge.

Live Code Implementation

Copy-paste production code with real-time payload synchronization

Complete Catalog

Institutional Calculation Endpoints (All 10 Live)

High-concurrency mathematical APIs running directly on Cloudflare global edge.

Method Endpoint Route Primary Calculation Domain Avg Latency Status
POST /api/calc/dscr Commercial DSCR, Debt Yield & Underwriting Grade < 35ms Live
POST /api/calc/solar-bess Commercial Solar + 4-Hr BESS 25-Year Model, Section 48 ITC & MACRS < 45ms Live
POST /api/calc/labor-burden CSI-16 Loaded Labor Burden Multipliers, FICA/FUTA & WC Rate Matrix < 30ms Live
POST /api/calc/mini-split ACCA Manual-J Heating/Cooling BTUs, SEER2 Savings & IRA 25C Credits < 25ms Live
POST /api/calc/roofing Commercial Flat Roof TPO/EPDM Membrane Squares, Tear-Off & Insulation < 30ms Live
POST /api/calc/epoxy Commercial Epoxy & Polyaspartic Flooring Multi-Tier Coating Estimator < 25ms Live
POST /api/calc/ev-fleet Commercial EV Fleet Electrification, Level 2/DCFC & Demand Charge Avoidance < 35ms Live
POST /api/calc/hard-money Fix-and-Flip Hard Money Underwriting, 70% ARV Ceiling & Net Margin < 30ms Live
POST /api/calc/roas Omnichannel Blended MER, ROAS, CAC Payback & Break-Even Acquisition < 35ms Live
POST /api/calc/saas SaaS Magic Number, Net MRR Expansion, Rule of 40 & LTV:CAC Ratio < 40ms Live
Open Source Engine SDK (MIT License)

Embed Core Calculation Algorithms Offline

Download SDK Package (.zip) →

Prefer to run financial, solar, AI compute, and contractor models locally in your Node.js, Python, or edge worker pipelines without API keys or rate limits? Download our tested, standalone calculation package with zero runtime dependencies.

// Node.js / TypeScript Example 
const { calculateDSCR, calculateSolarITC } = require('./src');
const dscr = calculateDSCR({ noi: 500000, annualDebtService: 375000 });
console.log(dscr); // { dscr: 1.33, meetsTarget: true }
Included Algorithms:
  • • Commercial DSCR & Debt Yield Hurdle
  • • IRA Section 48 ITC + Domestic Content
  • • CSI-16 Contractor Loaded Labor Burden
  • • Private GPU Cluster TCO & Token Inference
100% Free • MIT License • Unit Tested