Open data · developer-first · self-serve

Open-data APIs, done simply.

Payloda is a growing collection of simple, self-serve APIs built on open, authoritative data — clean endpoints, flat pricing, and a free tier. No opaque black boxes. No enterprise sales calls.

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Open-data sources Transparent pricing GET · JSON · MCP-ready Free tier to start
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Carbon Footprint & Emission Factor API

Turn any activity, spend, shipment or flight into kg CO₂e from open, authoritative data — plus live electricity grid carbon intensity and a “best time to run” signal that cuts both energy cost and carbon.

Carbon Footprint & Emission Factor API

2,892 emission factors from UK DEFRA, US EPA and Ember — every result cites its source and carries an A–C data-quality tier. Built for CSRD / SEC / carbon-accounting tools and carbon-aware apps.

Live · 17 endpoints
✓Activity → CO₂e across fuels, electricity, transport, materials & waste
✓Spend-based Scope 3 ($ + industry → CO₂e, US EPA USEEIO)
✓Freight & flights (ISO 14083; flights with radiative forcing)
✓Refrigerant / F-gas GWP (IPCC AR4/5/6, blends)
✓Live grid intensity — GB, US & EU, from the real-time mix
✓Best time to run — shift loads to the cleanest, cheapest hours
GET /grid/best-window?duration=3&zone=GB
{
  "best_window": { "from": "2026-07-20T12:30Z", "avg_gco2_per_kwh": 88.7 },
  "savings_vs_average_pct": 48.7,
  "recommendation": "Run your 3h load starting 12:30 UTC — ~49% lower carbon"
}
Subscribe on Zyla Learn more → Free tier available · Basic from $25/mo
Pricing

Flat, transparent plans

Start free, upgrade as you grow. Metered per API call — no seats, no “contact sales”. Billed through the Zyla marketplace today; native Payloda checkout is on the way.

Free
$0
100 calls / day
Every endpoint. For evaluation & hobby projects.
Basic
$25/mo
10,000 calls / mo
For prototypes & small apps.
Pro
$99/mo
100,000 calls / mo
For production workloads.
ProPlus
$299/mo
1,000,000 calls / mo
For scale & platforms.
Get started on Zyla
Why Payloda

Trustworthy data, without the enterprise tax

The incumbents gate open-data answers behind opaque pricing and “contact sales”. We don’t.

01 · OPEN

Built on authoritative open data

Public and government datasets, used within licence — no relicensed black boxes or mystery numbers.

02 · FAIR

No enterprise tax

Flat, transparent pricing with a free tier. Self-serve — no seats, no minimums, no “contact sales”.

03 · SIMPLE

GET, JSON, agent-ready

Clean query-param endpoints that are easy to integrate and friendly to LLM agents & MCP.