# BuilderNet documentation

> BuilderNet is a block building network for Ethereum. Refunds minimise execution costs; private transactions, bundles and propAMM quote updates go directly to the builder.

BuilderNet is a block building network for Ethereum. It pays refunds to minimise execution costs, and gives end users, market makers, traders and searchers the tools for efficient execution: private transactions, bundles and propAMM quote updates (priority updates), sent directly to the builder. These docs cover how to send orderflow and how refunds work. Site: https://buildernet.org. Send orderflow: https://buildernet.org/docs/send-orderflow. API reference: https://buildernet.org/docs/api. Refunds: https://buildernet.org/docs/refunds.

## Table of Contents

- [API Reference](https://buildernet.org/docs/api): BuilderNet API reference: eth_sendBundle, eth_sendRawTransaction, priority updates and the propAMM quote stream, and the refund methods.
- [How to participate](https://buildernet.org/docs/how-to-participate): Ways to participate in BuilderNet as a wallet, searcher, propAMM market maker, developer or researcher.
- [Open-source software](https://buildernet.org/docs/open-source): Overview of the open-source software BuilderNet is based on.
- [Public identification](https://buildernet.org/docs/public-identity): Public identifiers for BuilderNet nodes and blocks.
- [Refunds](https://buildernet.org/docs/refunds): How BuilderNet refunds MEV to the parties who contribute to its blocks, and how to look up refunds.
- [Resources](https://buildernet.org/docs/resources): Important resources related to BuilderNet, including documentation, articles and other useful links.
- [Roadmap](https://buildernet.org/docs/roadmap): Overview of BuilderNet goals and milestones.
- [How to send orderflow](https://buildernet.org/docs/send-orderflow): Endpoints and methods for sending bundles, transactions and propAMM quote updates directly to BuilderNet nodes.
- [What is BuilderNet](https://buildernet.org/docs): BuilderNet is a block building network for Ethereum. Refunds minimise execution costs for the end users, market makers, traders and searchers who s...
- [Introducing BuilderNet](https://buildernet.org/blog/2024-11-18-introducing-buildernet): BuilderNet is a decentralized block building network for Ethereum that runs on TEEs and shares MEV with the community.
- [BuilderNet v1.2](https://buildernet.org/blog/2025-02-19-buildernet-v1.2): We are excited to release BuilderNet v1.2, a significant upgrade that streamlines operator onboarding and enhances the security and performance of ...
- [BuilderNet v1.3](https://buildernet.org/blog/2025-04-28-buildernet-v1.3): We are excited to announce BuilderNet v1.3!
- [Beaverbuild -> BuilderNet](https://buildernet.org/blog/2025-05-06-beaverbuild): Beaverbuild is retiring their centralized block builder to work full time on BuilderNet.
- [BuilderNet v1.4](https://buildernet.org/blog/2025-05-13-buildernet-v1.4): BuilderNet v1.4 is the Pectra-ready version of BuilderNet.
- [BuilderNet v1.5](https://buildernet.org/blog/2025-07-08-buildernet-v1.5): BuilderNet v1.5 introduces EVM caching, an (even) faster root hash, and trusted TLS certificates to improve the security and experience of submitti...
- [BuilderNet v1.6](https://buildernet.org/blog/2025-12-02-buildernet-v1.6): BuilderNet v1.6 focuses on consolidation, performance, and protocol readiness.