# Welcome Optimistic Builder > *"Proactive funding for every builder in the Optimism Collective"*\ > \- obUSD token ideology Welcome to the official documentation for the **Optimistic Builder Dollar (obUSD)** — a yield-sharing stablecoin designed to fund builders of the Optimism Collective **proactively**. Suppose you're an Optimism Collective enthusiast, Optimism grantee, Optimism Citizen, or DeFi enthusiast. In that case, this guide will walk you through what obUSD is, why it exists, and how it works conceptually and technically. {% hint style="info" %} **Note —** obUSD is a sibling project within Bread Coop’s (prev. Breadchain) family of solidarity-based solutions. Explore more about solidarity funding at [**Bread.Coop**](https://app.breadchain.xyz/) {% endhint %} --- # 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://optimistic-usd.gitbook.io/optimistic-usd-docs/readme.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.