> For the complete documentation index, see [llms.txt](https://silius.gitbook.io/silius/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://silius.gitbook.io/silius/overview/project-structure.md). # Project structure The project is a standard Rust workspace with multiple crates - each responsible for specific functionalities. Each crate can also be imported into any other project, bootstrapping building account abstraction projects in Rust. At the moment, the following crates are available: * [**primitives**](/silius/crates/primitives.md) - types, constants, and other basic primitives * [**contracts**](/silius/crates/contracts.md) - interface for entry point smart contract and debug tracing utilities * [**uopool**](/silius/crates/uopool.md) - implementation of user operation mempool, validation logic (canonical and alt mempools), reputation * [**bundler**](/silius/crates/bundler.md) - implementation of the bundling functionalities (bundle builder) * [**rpc**](/silius/crates/rpc.md) - implementation of JSON-RPC interfaces, HTTP and WS * [**grpc**](/silius/crates/grpc.md) - crate that implements logic for running components (uopool and bundler) as gRPC services