# Welcome to the Cooler API The Cooler API enables you to calculate the carbon emissions (the carbon footprint) of products and services included within transactions using the simple *Footprint* endpoint, and to retrieve them using the *Transactions* endpoints. These APIs are the same we depend on for the Cooler Certified web application, which helps small businesses measure and neutralize\* their carbon emissions. *\*In the near future, you will be able to neutralize those emissions through the neutralization endpoints, as reflected in the Cooler app. Learn more at * ### Free Accounts Free accounts are limited to 10 requests per minute. and will receive a static footprint value in the API responses. To get live, real footprints, please sign up for the Pro account. ### Ready? [Get your production and test API Keys here](https://app.cooler.dev/docs-redirect) and through an app account. Get started right away in the [Quick Start Guide](https://docs.cooler.dev/quick-start) ### What is Cooler? Cooler is a climate-change software company that provides automated tools for measuring and neutralizing carbon footprints in service of our mission to reduce the negative impact of business operations on global warming. \ \ We measure carbon footprints by analyzing transactions with our deeply researched, science-based carbon calculator, which uses a hybrid EEIO-LCA approach, and neutralize by purchasing carbon emissions permits from cap-and-trade markets on your behalf. Ultimately, we’re working to help you measure and neutralize as much CO2 emissions as possible to significantly reduce carbon production and decrease the greenhouse gases emitted into our air and atmosphere through commerce. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.cooler.dev/welcome-to-the-cooler-api.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.