> For the complete documentation index, see [llms.txt](https://docs.code4rena.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.code4rena.com/readme.md).

# Code4rena

Community-driven competitions for smart contract audits

Code4rena (C4) is a competitive audit and bounty platform where security researchers, referred to as [Wardens](/roles.md), review, audit, and analyze codebases for security vulnerabilities in exchange for bounties provided by sponsoring projects.

The players in the arena:

* [**Wardens**](/roles.md) protect the DeFi ecosystem from threats by auditing code.
* [**Sponsors**](/sponsors.md) create prize pools to attract wardens to audit their project.
* [**Judges**](/roles/judges.md) decide the severity, validity, and quality of findings and rate the performance of wardens.

## How Code4rena works

These docs provide detailed information and guidelines for current and potential community members, and aim to answer the most frequently-asked questions about how Code4rena — and our competitive audits — work.


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