diff --git a/crates/by-chain/icepick-cosmos/src/lib.rs b/crates/by-chain/icepick-cosmos/src/lib.rs
index 0556e98..22cbb6c 100644
--- a/crates/by-chain/icepick-cosmos/src/lib.rs
+++ b/crates/by-chain/icepick-cosmos/src/lib.rs
@@ -28,7 +28,7 @@ pub struct GenerateWallet {
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct GetWalletAddress {
-    address_prefix: String,
+    blockchain_config: coin_denoms::Blockchain,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -324,12 +324,14 @@ impl Module for Cosmos {
                     "derivation_accounts": [(account | 1 << 31)],
                 }))
             }
-            Operation::GetWalletAddress(GetWalletAddress { address_prefix }) => {
+            Operation::GetWalletAddress(GetWalletAddress { blockchain_config }) => {
                 // NOTE: panics if doesn't exist
                 let key = request.derived_keys.unwrap()[0];
                 let privkey = secp256k1::SigningKey::from_slice(&key).unwrap();
                 let pubkey = privkey.public_key();
-                let sender_account_id = pubkey.account_id(&address_prefix).unwrap();
+                let sender_account_id = pubkey
+                    .account_id(&blockchain_config.bech32_config.account_address_prefix)
+                    .unwrap();
                 Ok(serde_json::json!({
                     "blob": {
                         "pubkey": sender_account_id,
@@ -495,10 +497,7 @@ impl Module for Cosmos {
                     amount: expected_fee as u128,
                 };
 
-                let fee = Fee::from_amount_and_gas(
-                    fee_coin,
-                    expected_gas,
-                );
+                let fee = Fee::from_amount_and_gas(fee_coin, expected_gas);
 
                 #[allow(clippy::identity_op)]
                 Ok(serde_json::json!({
diff --git a/crates/icepick-workflow/src/lib.rs b/crates/icepick-workflow/src/lib.rs
index d9ec259..4a2bf20 100644
--- a/crates/icepick-workflow/src/lib.rs
+++ b/crates/icepick-workflow/src/lib.rs
@@ -31,6 +31,9 @@ pub struct Workflow {
     #[serde(default)]
     pub inputs: Vec<String>,
 
+    #[serde(default)]
+    pub optional_inputs: Vec<String>,
+
     #[serde(rename = "step")]
     steps: Vec<WorkflowStep>,
 }
@@ -130,7 +133,7 @@ impl Workflow {
                 let Some((algo, path_prefix)) = operation.derivation_configuration() else {
                     return Err(WorkflowError::DerivationConfigurationNotFound(step_type));
                 };
-                derived_keys.extend(derive_keys(&algo, &path_prefix, &derivation_accounts));
+                derived_keys.extend(derive_keys(algo, path_prefix, &derivation_accounts));
             }
             derivation_accounts.clear();
 
diff --git a/crates/icepick/build.rs b/crates/icepick/build.rs
index 523d481..b5e5b66 100644
--- a/crates/icepick/build.rs
+++ b/crates/icepick/build.rs
@@ -1,15 +1,20 @@
 use icepick_workflow::Workflow;
-use std::{collections::HashMap, path::PathBuf};
+use std::{collections::HashMap, path::{PathBuf, Path}};
 
 fn env_var(var: &'static str) -> String {
     println!("cargo::rerun-if-env-changed={var}");
     std::env::var(var).expect(var)
 }
 
+fn track_path(path: &Path) {
+    println!("cargo::rerun-if-changed={}", path.to_str().unwrap());
+}
+
 fn main() {
     let out_dir = env_var("CARGO_TARGET_DIR");
     let crate_dir = env_var("CARGO_MANIFEST_DIR");
     let workflows_dir = PathBuf::from(crate_dir).join("workflows");
+    track_path(&workflows_dir);
 
     let mut workflows_by_module: HashMap<String, Vec<Workflow>> = Default::default();
 
@@ -40,6 +45,6 @@ fn main() {
         );
     }
     let out_path = PathBuf::from(out_dir).join("workflows.yaml");
-    let out_file = std::fs::File::create(out_path).unwrap();
+    let out_file = std::fs::File::create(&out_path).unwrap();
     serde_yaml::to_writer(out_file, &workflows_by_module).unwrap();
 }
diff --git a/crates/icepick/src/cli/workflow.rs b/crates/icepick/src/cli/workflow.rs
index dfd341b..fe2f7f0 100644
--- a/crates/icepick/src/cli/workflow.rs
+++ b/crates/icepick/src/cli/workflow.rs
@@ -88,6 +88,13 @@ pub fn generate_command(workflow: &Workflow) -> clap::Command {
             "A file containing any inputs not passed on the command line"
     ));
     for input in &workflow.inputs {
+        let arg = clap::Arg::new(input)
+            .required(true)
+            .long(input.replace('_', "-"))
+            .value_name(input.to_uppercase());
+        command = command.arg(arg);
+    }
+    for input in &workflow.optional_inputs {
         let arg = clap::Arg::new(input)
             .required(false)
             .long(input.replace('_', "-"))
@@ -99,6 +106,7 @@ pub fn generate_command(workflow: &Workflow) -> clap::Command {
 
 fn load_inputs<T: AsRef<str> + Into<String> + std::fmt::Display>(
     inputs: impl IntoIterator<Item = T>,
+    optional_inputs: impl IntoIterator<Item = T>,
     matches: &clap::ArgMatches,
 ) -> StringMap {
     let mut map = StringMap::default();
@@ -122,6 +130,21 @@ fn load_inputs<T: AsRef<str> + Into<String> + std::fmt::Display>(
         panic!("Required workflow input was not found: {input}");
     }
 
+    for input in optional_inputs {
+        match matches.get_one::<String>(input.as_ref()) {
+            Some(value) => {
+                map.insert(input.into(), value.clone());
+                continue;
+            }
+            None => {
+                if let Some(value) = input_file.as_ref().and_then(|f| f.get(input.as_ref())) {
+                    map.insert(input.into(), value.clone());
+                    continue;
+                }
+            }
+        }
+    }
+
     map
 }
 
@@ -152,7 +175,7 @@ pub fn handle(
     modules: Commands,
     config: &[ModuleConfig],
 ) {
-    let inputs = load_inputs(&workflow.inputs, matches);
+    let inputs = load_inputs(&workflow.inputs, &workflow.optional_inputs, matches);
     let data: HashMap<String, Value> = inputs
         .into_iter()
         .map(|(k, v)| (k, Value::String(v)))
@@ -161,13 +184,17 @@ pub fn handle(
     let operations = load_operations(modules, config);
 
     if matches.get_flag("simulate-workflow") {
-        let reports = workflow.simulate_workflow(data.into_keys().collect(), &operations).expect("Simulation failure");
+        let reports = workflow
+            .simulate_workflow(data.into_keys().collect(), &operations)
+            .expect("Simulation failure");
         for report in reports {
             println!("{report}");
         }
         return;
     }
 
-    let result = workflow.run_workflow(data, &operations, &derive_keys).expect("Invocation failure");
+    let result = workflow
+        .run_workflow(data, &operations, &derive_keys)
+        .expect("Invocation failure");
     println!("{}", serde_json::to_string(&result).expect("valid JSON"));
 }
diff --git a/crates/icepick/workflows/cosmos/generate-address.yaml b/crates/icepick/workflows/cosmos/generate-address.yaml
new file mode 100644
index 0000000..07a44c6
--- /dev/null
+++ b/crates/icepick/workflows/cosmos/generate-address.yaml
@@ -0,0 +1,20 @@
+name: generate-address
+inputs:
+- chain_name
+optional_inputs:
+- account
+step:
+- type: cosmos-get-chain-info
+  inputs:
+    chain_name: chain_name
+  outputs:
+    blockchain_config: blockchain_config
+- type: cosmos-generate-wallet
+  inputs:
+    account: account
+    blockchain_config: blockchain_config
+- type: cosmos-get-wallet-address
+  inputs:
+    blockchain_config: blockchain_config
+  outputs:
+    pubkey: pubkey
diff --git a/crates/icepick/workflows/sol/generate-address.yaml b/crates/icepick/workflows/sol/generate-address.yaml
new file mode 100644
index 0000000..c63c627
--- /dev/null
+++ b/crates/icepick/workflows/sol/generate-address.yaml
@@ -0,0 +1,10 @@
+name: generate-address
+optional_inputs:
+- account
+step:
+- type: sol-generate-wallet
+  inputs:
+    account: account
+- type: sol-get-wallet-address
+  outputs:
+    pubkey: pubkey