diff --git a/Cargo.lock b/Cargo.lock
index 825c2e8..93b6312 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -83,6 +83,17 @@ dependencies = [
  "rustc_version",
 ]
 
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "auto_impl"
 version = "1.0.1"
@@ -333,6 +344,45 @@ dependencies = [
  "generic-array 0.14.6",
 ]
 
+[[package]]
+name = "clap"
+version = "3.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15f2ea93df33549dbe2e8eecd1ca55269d63ae0b3ba1f55db030817d1c2867f"
+dependencies = [
+ "atty",
+ "bitflags",
+ "clap_derive",
+ "clap_lex",
+ "indexmap",
+ "once_cell",
+ "strsim",
+ "termcolor",
+ "textwrap",
+]
+
+[[package]]
+name = "clap_derive"
+version = "3.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea0c8bce528c4be4da13ea6fead8965e95b6073585a2f05204bd8f4119f82a65"
+dependencies = [
+ "heck",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2850f2f5a82cbf437dd5af4d49848fbdfc27c157c3d010345776f952765261c5"
+dependencies = [
+ "os_str_bytes",
+]
+
 [[package]]
 name = "client"
 version = "0.1.0"
@@ -340,6 +390,7 @@ dependencies = [
  "blst",
  "bytes",
  "common",
+ "config",
  "consensus",
  "ethers",
  "execution",
@@ -416,18 +467,24 @@ dependencies = [
 name = "common"
 version = "0.1.0"
 dependencies = [
- "blst",
- "bytes",
  "ethers",
  "eyre",
- "futures",
  "hex",
- "jsonrpsee",
- "reqwest",
- "revm",
  "serde",
  "ssz-rs",
- "tokio",
+ "toml",
+]
+
+[[package]]
+name = "config"
+version = "0.1.0"
+dependencies = [
+ "common",
+ "ethers",
+ "eyre",
+ "hex",
+ "serde",
+ "ssz-rs",
  "toml",
 ]
 
@@ -438,6 +495,7 @@ dependencies = [
  "blst",
  "bytes",
  "common",
+ "config",
  "ethers",
  "eyre",
  "futures",
@@ -564,6 +622,26 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "dirs"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca3aa72a6f96ea37bbc5aa912f6788242832f75369bdfdadcb0e38423f100059"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "ecdsa"
 version = "0.14.4"
@@ -1679,21 +1757,12 @@ checksum = "64de3cc433455c14174d42e554d4027ee631c4d046d43e3ecc6efc4636cdc7a7"
 name = "lightclient"
 version = "0.1.0"
 dependencies = [
- "blst",
- "bytes",
+ "clap",
  "client",
- "common",
- "ethers",
+ "config",
+ "dirs",
  "eyre",
- "futures",
- "hex",
- "jsonrpsee",
- "reqwest",
- "revm",
- "serde",
- "ssz-rs",
  "tokio",
- "toml",
 ]
 
 [[package]]
@@ -1933,6 +2002,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "os_str_bytes"
+version = "6.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"
+
 [[package]]
 name = "parity-scale-codec"
 version = "3.1.5"
@@ -2237,6 +2312,17 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b033d837a7cf162d7993aded9304e30a83213c648b6e389db233191f891e5c2b"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.6.0"
@@ -2810,6 +2896,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
+[[package]]
+name = "strsim"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+
 [[package]]
 name = "strum"
 version = "0.24.1"
@@ -2894,6 +2986,21 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "textwrap"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
+
 [[package]]
 name = "thiserror"
 version = "1.0.32"
@@ -3338,6 +3445,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
diff --git a/Cargo.toml b/Cargo.toml
index 14474f2..4ec9814 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,7 @@ members = [
     "cli",
     "client",
     "common",
+    "config",
     "consensus",
     "execution",
 ]
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index 204e1c0..e8089c8 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -4,19 +4,11 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-reqwest = { version = "0.11", features = ["json"] }
 tokio = { version = "1", features = ["full"] }
+clap = { version = "3.2.18", features = ["derive"] }
 eyre = "0.6.8"
-serde = { version = "1.0.143", features = ["derive"] }
-hex = "0.4.3"
-ssz-rs = { git = "https://github.com/ralexstokes/ssz-rs" }
-blst = "0.3.10"
-ethers = "0.17.0"
-jsonrpsee = { version = "0.15.1", features = ["full"] }
-revm = "1.9.0"
-bytes = "1.2.1"
-futures = "0.3.23"
-toml = "0.5.9"
+dirs = "4.0.0"
 
 client = { path = "../client" }
-common = { path = "../common" }
+config = { path = "../config" }
+
diff --git a/cli/src/main.rs b/cli/src/main.rs
index 7eaf005..dcb6f13 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -1,23 +1,41 @@
-use std::{path::Path, sync::Arc, time::Duration};
+use std::{sync::Arc, time::Duration};
 
+use clap::Parser;
+use dirs::home_dir;
 use eyre::Result;
 use tokio::time::sleep;
 
 use client::{rpc::Rpc, Client};
-use common::config::Config;
+use config::{networks, Config};
 
 #[tokio::main]
 async fn main() -> Result<()> {
-    let config = Config::from_file(Path::new("./configs/goerli.toml"))?;
+    let cli = Cli::parse();
+    let config = match cli.network.as_str() {
+        "goerli" => networks::goerli(),
+        _ => {
+            let home = home_dir().unwrap();
+            let config_path = home.join(format!(".lightclient/configs/{}.toml", cli.network));
+            Config::from_file(&config_path).unwrap()
+        }
+    };
 
     let mut client = Client::new(Arc::new(config)).await?;
     client.sync().await?;
 
-    let mut rpc = Rpc::new(Arc::new(client));
+    let mut rpc = Rpc::new(Arc::new(client), cli.port.unwrap_or(8545));
     let addr = rpc.start().await?;
-    println!("{}", addr);
+    println!("started rpc at: {}", addr);
 
     sleep(Duration::from_secs(300)).await;
 
     Ok(())
 }
+
+#[derive(Parser)]
+struct Cli {
+    #[clap(long)]
+    network: String,
+    #[clap(long)]
+    port: Option<u16>,
+}
diff --git a/client/Cargo.toml b/client/Cargo.toml
index 89557b2..b6ee7d7 100644
--- a/client/Cargo.toml
+++ b/client/Cargo.toml
@@ -23,3 +23,4 @@ toml = "0.5.9"
 common = { path = "../common" }
 consensus = { path = "../consensus" }
 execution = { path = "../execution" }
+config = { path = "../config" }
diff --git a/client/src/client.rs b/client/src/client.rs
index 7c8c7de..71b6dbe 100644
--- a/client/src/client.rs
+++ b/client/src/client.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use ethers::prelude::{Address, U256};
 use eyre::Result;
 
-use common::config::Config;
+use config::Config;
 use consensus::types::Header;
 use consensus::ConsensusClient;
 use execution::evm::Evm;
diff --git a/client/src/rpc.rs b/client/src/rpc.rs
index da6bf54..f421114 100644
--- a/client/src/rpc.rs
+++ b/client/src/rpc.rs
@@ -19,19 +19,22 @@ use super::Client;
 pub struct Rpc {
     client: Arc<Client>,
     handle: Option<HttpServerHandle>,
+    port: u16,
 }
 
 impl Rpc {
-    pub fn new(client: Arc<Client>) -> Self {
+    pub fn new(client: Arc<Client>, port: u16) -> Self {
         Rpc {
             client,
             handle: None,
+            port,
         }
     }
 
     pub async fn start(&mut self) -> Result<SocketAddr> {
         let rpc_inner = RpcInner {
             client: self.client.clone(),
+            port: self.port,
         };
         let (handle, addr) = start(rpc_inner).await?;
         self.handle = Some(handle);
@@ -62,7 +65,8 @@ trait EthRpc {
 }
 
 struct RpcInner {
-    pub client: Arc<Client>,
+    client: Arc<Client>,
+    port: u16,
 }
 
 #[async_trait]
@@ -154,7 +158,8 @@ impl EthRpcServer for RpcInner {
 }
 
 async fn start(rpc: RpcInner) -> Result<(HttpServerHandle, SocketAddr)> {
-    let server = HttpServerBuilder::default().build("127.0.0.1:8545").await?;
+    let addr = format!("127.0.0.1:{}", rpc.port);
+    let server = HttpServerBuilder::default().build(addr).await?;
 
     let addr = server.local_addr()?;
     let handle = server.start(rpc.into_rpc())?;
diff --git a/common/Cargo.toml b/common/Cargo.toml
index 85207d8..075ca64 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -6,16 +6,9 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-reqwest = { version = "0.11", features = ["json"] }
-tokio = { version = "1", features = ["full"] }
 eyre = "0.6.8"
 serde = { version = "1.0.143", features = ["derive"] }
 hex = "0.4.3"
 ssz-rs = { git = "https://github.com/ralexstokes/ssz-rs" }
-blst = "0.3.10"
 ethers = "0.17.0"
-jsonrpsee = { version = "0.15.1", features = ["full"] }
-revm = "1.9.0"
-bytes = "1.2.1"
-futures = "0.3.23"
 toml = "0.5.9"
diff --git a/common/src/lib.rs b/common/src/lib.rs
index 3e1b405..b4ab6a6 100644
--- a/common/src/lib.rs
+++ b/common/src/lib.rs
@@ -1,3 +1,2 @@
-pub mod config;
 pub mod types;
 pub mod utils;
diff --git a/config/Cargo.toml b/config/Cargo.toml
new file mode 100644
index 0000000..d11eed8
--- /dev/null
+++ b/config/Cargo.toml
@@ -0,0 +1,17 @@
+
+[package]
+name = "config"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+eyre = "0.6.8"
+serde = { version = "1.0.143", features = ["derive"] }
+hex = "0.4.3"
+ssz-rs = { git = "https://github.com/ralexstokes/ssz-rs" }
+ethers = "0.17.0"
+toml = "0.5.9"
+
+common = { path = "../common" }
diff --git a/configs/goerli.toml b/config/configs/goerli.toml
similarity index 100%
rename from configs/goerli.toml
rename to config/configs/goerli.toml
diff --git a/common/src/config.rs b/config/src/lib.rs
similarity index 96%
rename from common/src/config.rs
rename to config/src/lib.rs
index 66f4e80..7dd323f 100644
--- a/common/src/config.rs
+++ b/config/src/lib.rs
@@ -1,9 +1,11 @@
+pub mod networks;
+
 use std::{fs, path::Path};
 
 use eyre::Result;
 use serde::Deserialize;
 
-use super::utils::hex_str_to_bytes;
+use common::utils::hex_str_to_bytes;
 
 #[derive(Deserialize, Debug)]
 pub struct Config {
diff --git a/config/src/networks.rs b/config/src/networks.rs
new file mode 100644
index 0000000..8dc0dcb
--- /dev/null
+++ b/config/src/networks.rs
@@ -0,0 +1,37 @@
+use common::utils::hex_str_to_bytes;
+
+use crate::{Config, Fork, Forks, General};
+
+pub fn goerli() -> Config {
+    Config {
+        general: General {
+            chain_id: 5,
+            genesis_root: hex_str_to_bytes(
+                "0x043db0d9a83813551ee2f33450d23797757d430911a9320530ad8a0eabc43efb",
+            )
+            .unwrap(),
+            checkpoint: hex_str_to_bytes(
+                "0x172128eadf1da46467f4d6a822206698e2d3f957af117dd650954780d680dc99",
+            )
+            .unwrap(),
+            consensus_rpc: "http://testing.prater.beacon-api.nimbus.team".to_string(),
+            execution_rpc:
+                "https://eth-goerli.g.alchemy.com:443/v2/o_8Qa9kgwDPf9G8sroyQ-uQtyhyWa3ao"
+                    .to_string(),
+        },
+        forks: Forks {
+            genesis: Fork {
+                epoch: 0,
+                fork_version: hex_str_to_bytes("0x00001020").unwrap(),
+            },
+            altair: Fork {
+                epoch: 36660,
+                fork_version: hex_str_to_bytes("0x01001020").unwrap(),
+            },
+            bellatrix: Fork {
+                epoch: 112260,
+                fork_version: hex_str_to_bytes("0x02001020").unwrap(),
+            },
+        },
+    }
+}
diff --git a/consensus/Cargo.toml b/consensus/Cargo.toml
index be1ff64..cb28cd9 100644
--- a/consensus/Cargo.toml
+++ b/consensus/Cargo.toml
@@ -21,4 +21,4 @@ futures = "0.3.23"
 toml = "0.5.9"
 
 common = { path = "../common" }
-
+config = { path = "../config" }
diff --git a/consensus/src/consensus.rs b/consensus/src/consensus.rs
index c68afb6..7f1dcd6 100644
--- a/consensus/src/consensus.rs
+++ b/consensus/src/consensus.rs
@@ -5,9 +5,9 @@ use blst::BLST_ERROR;
 use eyre::Result;
 use ssz_rs::prelude::*;
 
-use common::config::Config;
 use common::types::*;
 use common::utils::*;
+use config::Config;
 
 use super::rpc::Rpc;
 use super::types::*;