# Example Codebases

## Example Codebases

The Euclid SDK is designed to provide developers with the tools they need to build robust and scalable decentralized applications on the Constellation Network. To help you get started, we have curated a list of exemplary codebases that you can explore and learn from. These codebases are open-source projects that demonstrate various aspects of using the Euclid SDK in real-world scenarios.

### Codebases[​](https://docs.constellationnetwork.io/sdk/resources/example-codebases#codebases) <a href="#codebases" id="codebases"></a>

<table data-card-size="large" data-view="cards" data-full-width="true"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>Metagraph Examples</strong></td><td>The Metagraph Examples repository contains several minimalist metagraph codebases designed to demonstrate specific metagraph features in a simplified context. All projects in this repo can be installed with <code>hydra install-template</code></td><td><strong>Displays:</strong> many concepts.</td><td><a href="https://github.com/Constellation-Labs/metagraph-examples">https://github.com/Constellation-Labs/metagraph-examples</a></td><td><a href="https://393710127-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxrXzGdpjkF8q1pQcgabg%2Fuploads%2FM7RiRUvHXoc2Kw5J95FZ%2Fmsedge_v7yXuo4J3Z.png?alt=media&#x26;token=e849f3c5-26da-4329-be2e-e261f2163976">msedge_v7yXuo4J3Z.png</a></td></tr><tr><td><strong>Dor Metagraph</strong></td><td>This repository is the codebase of the Dor Metagraph, the first metagraph to launch to MainNet. The Dor Metagraph ingests foot traffic data from a network of IoT sensors.</td><td><strong>Displays:</strong> strategies for processing binary data types using decoders, reward distribution, and separation of public/private data using calculated state.</td><td><a href="https://github.com/Constellation-Labs/dor-metagraph">https://github.com/Constellation-Labs/dor-metagraph</a></td><td><a href="https://393710127-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxrXzGdpjkF8q1pQcgabg%2Fuploads%2FyUaJH8sWqzrXMFis9zwo%2Fmsedge_lJxQAuU1qz.png?alt=media&#x26;token=afd69ce7-3dbd-4ae5-bb07-263a179e853d">msedge_lJxQAuU1qz.png</a></td></tr><tr><td><strong>EL PACA Metagraph</strong></td><td>This repository is the codebase of the EL PACA Metagraph, a social credit metagraph designed to track and reward community activity within the Constellation ecosystem.</td><td><strong>Displays:</strong> data fetching using daemons, integration with 3rd party APIs, and reward distribution</td><td><a href="https://github.com/Constellation-Labs/elpaca-metagraph">https://github.com/Constellation-Labs/elpaca-metagraph</a></td><td><a href="https://393710127-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxrXzGdpjkF8q1pQcgabg%2Fuploads%2FCy0aIw54wbfV67EIB9F0%2F0_WvduXV4zjh8PsjGm.webp?alt=media&#x26;token=612dde25-34ef-44a5-9c0d-29ee963021af">0_WvduXV4zjh8PsjGm.webp</a></td></tr></tbody></table>


---

# 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.constellationnetwork.io/metagraph-development/resources/example-codebases.md?ask=<question>
```

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.