diff --git a/crates/aiken/src/cmd/tx/simulate.rs b/crates/aiken/src/cmd/tx/simulate.rs
index fad6ac01..21cd3f9c 100644
--- a/crates/aiken/src/cmd/tx/simulate.rs
+++ b/crates/aiken/src/cmd/tx/simulate.rs
@@ -144,7 +144,7 @@ pub fn exec(
                 eprintln!("\n");
                 println!(
                     "{}",
-                    serde_json::to_string(&total_budget_used)
+                    serde_json::to_string_pretty(&total_budget_used)
                         .map_err(|_| fmt::Error)
                         .into_diagnostic()?
                 );
diff --git a/crates/aiken/src/cmd/uplc/eval.rs b/crates/aiken/src/cmd/uplc/eval.rs
index 898f8087..cdddd935 100644
--- a/crates/aiken/src/cmd/uplc/eval.rs
+++ b/crates/aiken/src/cmd/uplc/eval.rs
@@ -1,5 +1,6 @@
 use miette::IntoDiagnostic;
-use std::path::PathBuf;
+use serde_json::json;
+use std::{path::PathBuf, process};
 use uplc::{
     ast::{FakeNamedDeBruijn, Name, NamedDeBruijn, Program, Term},
     machine::cost_model::ExBudget,
@@ -63,32 +64,38 @@ pub fn exec(
 
     let budget = ExBudget::default();
 
-    let (term, cost, logs) = program.eval(budget);
+    let mut eval_result = program.eval(budget);
 
-    match term {
+    let cost = eval_result.cost();
+    let logs = eval_result.logs();
+
+    match eval_result.result() {
         Ok(term) => {
             let term: Term<Name> = term.try_into().into_diagnostic()?;
 
-            println!("\nResult\n------\n\n{}\n", term.to_pretty());
+            let output = json!({
+                "result": term.to_pretty(),
+                "cpu": cost.cpu,
+                "mem": cost.mem,
+            });
+
+            println!(
+                "{}",
+                serde_json::to_string_pretty(&output).into_diagnostic()?
+            );
+
+            Ok(())
         }
         Err(err) => {
             eprintln!("\nError\n-----\n\n{err}\n");
+
+            eprintln!("\nCosts\n-----\ncpu: {}\nmemory: {}", cost.cpu, cost.mem);
+
+            if !logs.is_empty() {
+                eprintln!("\nLogs\n----\n{}", logs.join("\n"))
+            }
+
+            process::exit(1)
         }
     }
-
-    println!(
-        "\nCosts\n-----\ncpu: {}\nmemory: {}",
-        budget.cpu - cost.cpu,
-        budget.mem - cost.mem
-    );
-    println!(
-        "\nBudget\n------\ncpu: {}\nmemory: {}\n",
-        cost.cpu, cost.mem
-    );
-
-    if !logs.is_empty() {
-        println!("\nLogs\n----\n{}", logs.join("\n"))
-    }
-
-    Ok(())
 }
diff --git a/crates/uplc/src/machine/eval_result.rs b/crates/uplc/src/machine/eval_result.rs
new file mode 100644
index 00000000..468ebce9
--- /dev/null
+++ b/crates/uplc/src/machine/eval_result.rs
@@ -0,0 +1,44 @@
+use crate::ast::{Constant, NamedDeBruijn, Term};
+
+use super::{cost_model::ExBudget, Error};
+
+pub struct EvalResult {
+    result: Result<Term<NamedDeBruijn>, Error>,
+    remaining_budget: ExBudget,
+    initial_budget: ExBudget,
+    logs: Vec<String>,
+}
+
+impl EvalResult {
+    pub fn new(
+        result: Result<Term<NamedDeBruijn>, Error>,
+        remaining_budget: ExBudget,
+        initial_budget: ExBudget,
+        logs: Vec<String>,
+    ) -> EvalResult {
+        EvalResult {
+            result,
+            remaining_budget,
+            initial_budget,
+            logs,
+        }
+    }
+
+    pub fn cost(&self) -> ExBudget {
+        self.initial_budget - self.remaining_budget
+    }
+
+    pub fn logs(&mut self) -> Vec<String> {
+        std::mem::take(&mut self.logs)
+    }
+
+    pub fn failed(&self) -> bool {
+        matches!(self.result, Err(_))
+            || matches!(self.result, Ok(Term::Error))
+            || matches!(self.result, Ok(Term::Constant(ref con)) if matches!(con.as_ref(), Constant::Bool(false)))
+    }
+
+    pub fn result(self) -> Result<Term<NamedDeBruijn>, Error> {
+        self.result
+    }
+}
diff --git a/examples/acceptance_tests/script_context/plutus.json b/examples/acceptance_tests/script_context/plutus.json
index a6178531..e13d9f5a 100644
--- a/examples/acceptance_tests/script_context/plutus.json
+++ b/examples/acceptance_tests/script_context/plutus.json
@@ -5,37 +5,6 @@
     "plutusVersion": "v2"
   },
   "validators": [
-    {
-      "title": "withdrawals.spend",
-      "datum": {
-        "title": "Unit",
-        "description": "The nullary constructor.",
-        "schema": {
-          "anyOf": [
-            {
-              "dataType": "constructor",
-              "index": 0,
-              "fields": []
-            }
-          ]
-        }
-      },
-      "redeemer": {
-        "title": "Unit",
-        "description": "The nullary constructor.",
-        "schema": {
-          "anyOf": [
-            {
-              "dataType": "constructor",
-              "index": 0,
-              "fields": []
-            }
-          ]
-        }
-      },
-      "compiledCode": "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",
-      "hash": "6917ce2313801b854e38507b68d2c61afd70fca721804235e4760056"
-    },
     {
       "title": "basic.spend",
       "datum": {
@@ -77,6 +46,37 @@
       "compiledCode": "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",
       "hash": "dbc571e23778572680144ee7065334ab9545cc8111da1ea5dc85ac44"
     },
+    {
+      "title": "withdrawals.spend",
+      "datum": {
+        "title": "Unit",
+        "description": "The nullary constructor.",
+        "schema": {
+          "anyOf": [
+            {
+              "dataType": "constructor",
+              "index": 0,
+              "fields": []
+            }
+          ]
+        }
+      },
+      "redeemer": {
+        "title": "Unit",
+        "description": "The nullary constructor.",
+        "schema": {
+          "anyOf": [
+            {
+              "dataType": "constructor",
+              "index": 0,
+              "fields": []
+            }
+          ]
+        }
+      },
+      "compiledCode": "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",
+      "hash": "6917ce2313801b854e38507b68d2c61afd70fca721804235e4760056"
+    },
     {
       "title": "deploy.spend",
       "datum": {