Developers

Carbon Accounting API for Developers

Add carbon emissions tracking to your platform with ZeroCarbon's REST API. GHG Protocol-compliant calculations for Scope 1, 2, and 3 emissions. India-specific emission factors included. BRSR-ready outputs.

View API Documentation Get API Access

< 200ms

Average API Response

99.9%

Uptime SLA

Scope 3 Categories

Why Build on ZeroCarbon API?

Don't build carbon accounting from scratch. Use our battle-tested calculations, maintained emission factor database, and compliance-ready outputs.

GHG Protocol Compliant

All calculations follow GHG Protocol Corporate Standard. Built-in Scope 1, 2 (location & market-based), and all 15 Scope 3 categories.

India Emission Factors

CEA grid factors for Indian states, BEE fuel factors, TERI transport factors. Updated annually with official government data.

BRSR-Ready Outputs

API responses structured for SEBI BRSR reporting. Generate Principle 6 disclosure tables with a single API call.

Who Uses ZeroCarbon API?

Climate platforms, fintech apps, ERP systems, and sustainability tools rely on our API for accurate carbon calculations.

Climate Tech Platforms

Carbon management SaaS, ESG reporting tools, sustainability dashboards

Embed carbon tracking in your sustainability platform
Generate client reports with accurate emissions data
Offer BRSR reporting as a feature without building it yourself

ERP & Financial Software

Procurement systems, expense management, accounting software

Auto-calculate emissions from purchase orders and invoices
Add carbon footprint to expense reports and travel bookings
Surface carbon data in existing financial workflows

E-commerce & Marketplaces

B2B marketplaces, logistics platforms, supply chain tools

Show product carbon footprints at checkout
Calculate shipping emissions based on logistics data
Offer carbon-neutral shipping options

Custom Applications

Internal tools, portfolio tracking, industry-specific solutions

Build custom carbon calculators for specific industries
Track portfolio company emissions (VCs, PE firms)
White-label carbon accounting for your clients

What Can You Build?

From simple calculators to complex multi-tenant platforms, our API handles it all.

Core Emissions Calculations

Scope 1: Direct Emissions

Fuel combustion, refrigerant leakage, process emissions

POST /api/v1/emissions/scope1/fuel

Scope 2: Purchased Energy

Electricity, steam, heating, cooling (location & market-based)

POST /api/v1/emissions/scope2/electricity

Scope 3: Value Chain

All 15 categories: purchased goods, business travel, logistics, etc.

POST /api/v1/emissions/scope3/purchased-goods

Advanced Features

Emission Factor Library

Query 10,000+ emission factors for India and global activities

GET /api/v1/emission-factors/search?country=IN

Multi-Tenant Organizations

Create and manage multiple companies, facilities, and reporting periods

POST /api/v1/organizations

Report Generation

Generate BRSR, CDP, GRI reports with a single API call

GET /api/v1/reports/brsr/2024

Quick to Integrate

RESTful API with JSON responses. OAuth 2.0 authentication. Comprehensive error handling. SDKs for Node.js, Python, and more.

Fast Response Times

Average API response under 200ms for calculation endpoints

Enterprise Security

SOC 2 compliant, encrypted at rest and in transit, role-based access control

Scalable Infrastructure

99.9% uptime SLA, auto-scaling to handle traffic spikes

Example Request

// Calculate Scope 2 electricity emissions
const response = await fetch(
  'https://api.zerocarbon.codes/v1/emissions/scope2/electricity',
  {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer YOUR_API_KEY',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      consumption_kwh: 50000,
      country: 'IN',
      state: 'Delhi',
      year: 2024
    })
  }
);

const data = await response.json();
console.log(data);
// {
//   "emissions_tco2e": 38.5,
//   "emission_factor": 0.77,
//   "source": "CEA 2023-24 Grid Factor",
//   "scope": 2,
//   "methodology": "Location-based"
// }

Simple, Transparent Pricing

Start free, scale as you grow. No surprise charges, no per-seat fees.

Developer

Free

1,000 API calls/month
All calculation endpoints
Documentation & SDKs
Community support

Get Started

Growth

$299/month

50,000 API calls/month
Multi-tenant organizations
Report generation endpoints
Email support (24h SLA)
99.9% uptime SLA