---
seo:
  description: >-
    Buy carbon offsets from your own systems. Your account has a prepaid USD
    balance; each purchase takes its cost from the balance, and we buy and
    retire the…
sidebar:
  label: Overview
title: TrimCarbon Offset API
---
Buy carbon offsets from your own systems. Your account has a prepaid USD balance; each purchase takes its cost from the balance, and we buy and retire the carbon credits for it.

Every request needs an API key, sent as `Authorization: Bearer tc_live_…`. Test keys (`tc_test_…`) spend a simulated balance: they charge nothing and retire nothing, and their offsets show as placed after a few seconds. Top-ups start at $250, on the developer page.

Version 1

Base URL: `https://trimcarbon.com/api/v1`

## Offsets

Buy offsets and follow their orders.

- [`POST /offsets`](/docs/reference/offsets/create-offset) — Buy offsets.
- [`GET /offsets`](/docs/reference/offsets/list-offsets) — List offsets.
- [`GET /offsets/{id}`](/docs/reference/offsets/get-offset) — Get an offset.
- [`POST /quotes`](/docs/reference/offsets/create-quote) — Get a quote.

## Account

Balance and totals.

- [`GET /balance`](/docs/reference/account/get-balance) — Get the balance.
- [`GET /impact`](/docs/reference/account/get-impact) — Get your API impact.