diff --git a/crates/cli/src/cli/mod.rs b/crates/cli/src/cli/mod.rs
index 7b558c43..f686f0ab 100644
--- a/crates/cli/src/cli/mod.rs
+++ b/crates/cli/src/cli/mod.rs
@@ -237,6 +237,9 @@ pub struct StartSimnet {
     /// Enable all SVM features (override mainnet defaults which are used by default)
     #[clap(long = "features-all", action=ArgAction::SetTrue, default_value = "false")]
     pub all_features: bool,
+    /// A set of inputs to use for the runbook (eg. surfpool start --runbook-input myInputs.json)
+    #[arg(long = "runbook-input", short = 'i', default_value = "./txtx.yml")]
+    pub runbook_input: Vec<String>,
 }
 
 fn parse_svm_feature(s: &str) -> Result<SvmFeature, String> {
diff --git a/crates/cli/src/cli/simnet/mod.rs b/crates/cli/src/cli/simnet/mod.rs
index 5369d578..012ebce1 100644
--- a/crates/cli/src/cli/simnet/mod.rs
+++ b/crates/cli/src/cli/simnet/mod.rs
@@ -469,6 +469,7 @@ async fn write_and_execute_iac(
             }
         }
 
+        let runbook_input = cmd.runbook_input.clone();
         // Is infrastructure-as-code (IaC) already setup?
         let base_location =
             FileLocation::from_path_string(&cmd.manifest_path)?.get_parent_location()?;
@@ -510,6 +511,7 @@ async fn write_and_execute_iac(
             simnet_events_tx,
             &on_disk_runbook_data,
             &in_memory_runbook_data,
+            &runbook_input,
         );
 
         let simnet_events_tx = simnet_events_tx.clone();
@@ -523,6 +525,7 @@ async fn write_and_execute_iac(
         if cmd.watch {
             let _handle = hiro_system_kit::thread_named("Watch Filesystem")
                 .spawn(move || {
+                    let runbook_input = runbook_input.clone();
                     let mut target_path = base_location.clone();
                     let _ = target_path.append_path("target");
                     let _ = target_path.append_path("deploy");
@@ -571,6 +574,7 @@ async fn write_and_execute_iac(
                             &simnet_events_tx,
                             &on_disk_runbook_data,
                             &in_memory_runbook_data,
+                            &runbook_input,
                         );
 
                         let _ = hiro_system_kit::nestable_block_on(join_all(futures));
@@ -588,6 +592,7 @@ fn assemble_runbook_execution_futures(
     simnet_events_tx: &Sender<SimnetEvent>,
     on_disk_runbook_data: &Option<(FileLocation, Vec<String>)>,
     in_memory_runbook_data: &Option<(String, RunbookSources, WorkspaceManifest)>,
+    runbook_input: &Vec<String>,
 ) -> Vec<std::pin::Pin<Box<dyn std::future::Future<Output = Result<(), String>> + Send>>> {
     let mut futures: Vec<
         std::pin::Pin<Box<dyn std::future::Future<Output = Result<(), String>> + Send>>,
@@ -619,8 +624,12 @@ fn assemble_runbook_execution_futures(
             futures.push(Box::pin(execute_on_disk_runbook(
                 progress_tx.clone(),
                 simnet_events_tx_copy.clone(),
-                ExecuteRunbook::default_localnet(&runbook_id_owned)
-                    .with_manifest_path(file_location_owned.to_string()),
+                {
+                    let mut ec = ExecuteRunbook::default_localnet(&runbook_id_owned)
+                        .with_manifest_path(file_location_owned.to_string());
+                    ec.inputs = runbook_input.clone();
+                    ec
+                },
                 do_setup_logger,
             )));
         }