Playground · live
Pick a request, hit Run, and get a sourced emission factor back — with the exact place in the source it was read from and the data version. The first one runs live right now, no key.
api.greencalculus.com/v1/factors?search={what you are measuring}api.greencalculus.comGet a free key to run calculations, resolve plain-language descriptions, and go to production — 1,000 calls a month, no card. Then wire the same call into your own code in about five minutes, or build something real in a lunch break.
Get a free key Read the docs Building an agent? Same data over MCP →
Your key is stored in this browser only, never sent to GreenCalculus servers except as the request’s auth header. Full reference on the docs.