This repository is neo4rs, a production-grade asynchronous Rust driver for the Neo4j graph database. It implements the Bolt binary protocol (versions 4.x with partial 5.x support) and provides a complete client library for querying, transaction management, connection pooling, cluster routing, and serialization of Neo4j's rich data types (nodes, relationships, paths, temporal and spatial values). The architecture is modular: a connection layer handles TCP/TLS handshakes and chunked message framing; a PackStream serializer/deserializer converts between Rust types and the Bolt wire format; a routing module manages cluster membership and load balancing; and a high-level API (Graph, Session, Txn, RowStream) offers async query execution with automatic retry on transient errors. The codebase includes two parallel Bolt protocol implementations—a legacy one and a newer feature-gated version—which introduces maintenance overhead. Despite this, the project is actively maintained with extensive integration tests against multiple Neo4j versions and a robust CI pipeline. The library is suitable for any Rust application that needs to interact with Neo4j, offering both a high-level ergonomic API and low-level control over the protocol.