> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cdr.fyi/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Welcome to the CDR.fyi API documentation

## Welcome

Welcome to the CDR.fyi API documentation. We can't wait to see what you build on the largest platform for carbon removal data.

## Overview

The CDR.FYI API is designed to help you interact programmatically with our platform. Our API is organized around REST and uses standard HTTP response codes, authentication, and verbs.

**NOTE:** You will need access to the CDR.fyi Partner Portal to use the API. If you do not have access, apply [here](https://docs.google.com/forms/d/e/1FAIpQLSePsKG739_XlxinCT5VMlQAte7ezjaHRsXpwPANRLhxu26VCQ/viewform).

## Base URL

All URLs referenced in the documentation have the following base:

`https://api.cdr.fyi/v1`

## Table of Contents

* [Authentication](/authentication): Learn how to authenticate your API requests using bearer tokens.

* [Orders](/api-reference/orders): Retrieve and create order records.

* [Suppliers](/api-reference/suppliers): Retrieve and create supplier records.

* [Marketplaces](/api-reference/marketplaces): Retrieve and create marketplace records.

* [Purchasers](/api-reference/purchasers): Retrieve and create purchaser records.

* [Projects (Beta)](/api-reference/projects-facilities): Retrieve project records.

* [Changelog](/changelog): Stay up to date with changes to our API.

For further details and support, feel free to [reach out to us](mailto:support@cdr.fyi). We're here to help you succeed. Happy coding!