diff --git a/Cargo.lock b/Cargo.lock
index 31b72ff..fb01205 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -136,6 +136,16 @@ dependencies = [
  "clap",
  "env_logger",
  "log",
+ "url",
+]
+
+[[package]]
+name = "form_urlencoded"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
+dependencies = [
+ "percent-encoding",
 ]
 
 [[package]]
@@ -150,6 +160,16 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
+[[package]]
+name = "idna"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
+dependencies = [
+ "unicode-bidi",
+ "unicode-normalization",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.0"
@@ -168,6 +188,12 @@ version = "2.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
 
+[[package]]
+name = "percent-encoding"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.84"
@@ -232,12 +258,53 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87cc5ceb3875bb20c2890005a4e226a4651264a5c75edb2421b52861a0a0cb50"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+
+[[package]]
+name = "unicode-bidi"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08f95100a766bf4f8f28f90d77e0a5461bbdb219042e7679bebe79004fed8d75"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
+[[package]]
+name = "unicode-normalization"
+version = "0.1.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a56d1686db2308d901306f92a263857ef59ea39678a5458e7cb17f01415101f5"
+dependencies = [
+ "tinyvec",
+]
+
+[[package]]
+name = "url"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31e6302e3bb753d46e83516cae55ae196fc0c309407cf11ab35cc51a4c2a4633"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+]
+
 [[package]]
 name = "utf8parse"
 version = "0.2.1"
diff --git a/Cargo.toml b/Cargo.toml
index bc37b1d..30f4de7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,3 +8,4 @@ description = "Combines blocklists for ActivityPub software"
 clap = { version = "4.5.4", features = ["derive"] }
 env_logger = "0.11.3"
 log = "0.4.21"
+url = "2.5.0"
diff --git a/blocks.txt b/blocks.txt
deleted file mode 100644
index de54ac6..0000000
--- a/blocks.txt
+++ /dev/null
@@ -1 +0,0 @@
-example.com
diff --git a/mutes.txt b/mutes.txt
deleted file mode 100644
index db90029..0000000
--- a/mutes.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-example.net
-example.org
diff --git a/src/main.rs b/src/main.rs
index fce425d..b81a7ae 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,30 +6,42 @@ mod tests;
 use std::path::PathBuf;
 
 use clap::Parser;
+use log::error;
 
 #[derive(Parser)]
 #[command(version, about, long_about = None)]
 struct Cli {
-    /// Selects a custom config file (optional)
+    /// Selects a custom config file
     config: Option<PathBuf>,
 
-    /// Sets output directory (optional, defaults to current directory)
-    output_dir: Option<PathBuf>,
-
-    /// Specifies block files/directories
-    #[arg(short, long)]
+    /// Specifies files/directories for blocks
+    #[arg(short = 'B', long)]
     block: Vec<PathBuf>,
 
-    /// Specifies silence files/directories
-    #[arg(short, long)]
+    /// Specifies files/directories for silences
+    #[arg(short = 'M', long)]
     mute: Vec<PathBuf>,
+
+    /// Specifies confidence in a source. Default = 100
+    #[arg(short, long)]
+    trust: Vec<u16>,
+
+    /// Sets output directory (optional, defaults to current directory)
+    #[arg(last = true)]
+    path: Option<PathBuf>,
     // TODO more options
     // TODO verbose mode
 }
 
 fn main() {
+    env_logger::init();
+
     let cli = Cli::parse();
 
+    if cli.block.is_empty() && cli.mute.is_empty() && cli.config.is_none() {
+        error!("No lists or configuration provided.");
+    }
+
     // TODO argument parsing - IN PROGRESS
     // TODO logging
 }
diff --git a/src/manip.rs b/src/manip.rs
index 62472af..9a38e76 100644
--- a/src/manip.rs
+++ b/src/manip.rs
@@ -31,6 +31,8 @@ impl ModActionTrust {
 }
 
 impl From<(u16, u16)> for ModActionTrust {
+    /// Creates mod action weights from a tuple of two `u16` weights. Useful
+    /// mostly for testing.
     fn from(value: (u16, u16)) -> Self {
         Self {
             block: value.0,