Developer API

The public Exergy Factor API is live.

Run deterministic quantity, Exergy Factor, accessible-exergy, and end-use accounting calculations over HTTP. The public beta is keyless: no email, account, or API key is required.

Public beta access

No API key required

Open API docs

Ready to check the hosted service.

Base URL:
https://exergy-factor-api.onrender.com/v1

Use is subject to the API Terms and Privacy Notice.

What the API Provides

One stream-calculation contract.

Discover the accepted inputs, then calculate energy quantity, Exergy Factor, and accessible exergy. The same JSON request works through Python, the CLI, and HTTP.

GET  /v1/health
GET  /v1/capabilities
GET  /v1/calculate/schema
POST /v1/calculate
GET  /v1/accounting/schema
POST /v1/account

Install quantity-and-quality[api] and run quantity-quality serve-api for a local deployment, or use the hosted beta directly. Results retain units, reference conditions, basis, boundary, Fidelity Tier, assumptions, and warnings.

POST https://exergy-factor-api.onrender.com/v1/calculate
Content-Type: application/json

{"stream_type":"heat","quantity":1,"unit":"MWh_th","source_c":80,"sink_c":20}