# Setup ## Bolty and the Bolt protocol AshNeo4j connects to Neo4j via the [Bolt protocol](https://neo4j.com/docs/bolt/current/) using [Bolty](https://hexdocs.pm/bolty/), a DBConnection-based driver. Bolty is a required dependency of AshNeo4j — you do not add it separately. There is no `Ecto.Repo`. Instead, Bolty runs as a named process (`Bolt`) in your application's supervision tree, backed by a DBConnection pool. ## Configuration Add connection config to `config/runtime.exs` (credentials should not be in `config/config.exs`): ```elixir config :bolty, Bolt, uri: "bolt://localhost:7687", auth: [username: "neo4j", password: "password"], pool_size: 10, name: Bolt ``` `name: Bolt` is required — AshNeo4j always refers to the connection pool by the name `Bolt`. ## Supervision tree Add Bolty to your application's children in `lib/my_app/application.ex`: ```elixir def start(_type, _args) do children = [ {Bolty, Application.get_env(:bolty, Bolt)}, # ... ] Supervisor.start_link(children, strategy: :one_for_one, name: MyApp.Supervisor) end ``` ## Igniter If your project uses Igniter, the above can be done automatically: ```bash mix igniter.install ash_neo4j ```