diff --git a/CodeSmellAuditor.Cli/BatchRunSummary.cs b/CodeSmellAuditor.Cli/BatchRunSummary.cs
new file mode 100644
index 0000000..a99f8e7
--- /dev/null
+++ b/CodeSmellAuditor.Cli/BatchRunSummary.cs
@@ -0,0 +1,41 @@
+using System.Text;
+using CodeSmellAuditor.Core;
+
+namespace CodeSmellAuditor.Cli;
+
+/// <summary>
+/// Formats a plain-text batch pass/fail summary for the console host.
+/// </summary>
+public static class BatchRunSummary
+{
+    public static string Format(AuditRunResult result)
+    {
+        if (result.FileResults.Count == 0)
+        {
+            return "Batch summary: 0 files audited.";
+        }
+
+        int passed = result.FileResults.Count(file => file.HasPassed);
+        int failed = result.FileResults.Count - passed;
+
+        var builder = new StringBuilder();
+        builder.Append("Batch summary: ");
+        builder.Append(result.FileResults.Count);
+        builder.Append(" files - ");
+        builder.Append(passed);
+        builder.Append(" passed, ");
+        builder.Append(failed);
+        builder.Append(" failed");
+
+        foreach (FileAuditResult file in result.FileResults)
+        {
+            builder.AppendLine();
+            builder.Append("  ");
+            builder.Append(file.HasPassed ? "PASS" : "FAIL");
+            builder.Append("  ");
+            builder.Append(file.FileName);
+        }
+
+        return builder.ToString();
+    }
+}
diff --git a/CodeSmellAuditor.Cli/CliAuditHost.cs b/CodeSmellAuditor.Cli/CliAuditHost.cs
index 8104089..9adef68 100644
--- a/CodeSmellAuditor.Cli/CliAuditHost.cs
+++ b/CodeSmellAuditor.Cli/CliAuditHost.cs
@@ -24,7 +24,9 @@ public async Task<AuditRunResult> RunAsync(string rulesPath, string targetsPath)
         if (targetFiles.Count == 0)
         {
             AnsiConsole.MarkupLine("[bold yellow]WARNING:[/] No C# target files found.");
-            return new AuditRunResult(Array.Empty<FileAuditResult>());
+            AuditRunResult emptyResult = new(Array.Empty<FileAuditResult>());
+            PrintBatchSummary(emptyResult);
+            return emptyResult;
         }
 
         string reportsDirectoryPath = AuditEngine.ResolveReportsDirectory(rulesPath);
@@ -43,7 +45,9 @@ public async Task<AuditRunResult> RunAsync(string rulesPath, string targetsPath)
             fileResults.Add(result);
         }
 
-        return new AuditRunResult(fileResults);
+        AuditRunResult runResult = new(fileResults);
+        PrintBatchSummary(runResult);
+        return runResult;
     }
 
     /// <summary>
@@ -129,4 +133,12 @@ private static void PrintRulesLoaded(IReadOnlyList<AuditRule> rules)
 
         AnsiConsole.WriteLine();
     }
+
+    private static void PrintBatchSummary(AuditRunResult result)
+    {
+        AnsiConsole.WriteLine();
+        AnsiConsole.Write(new Rule("[bold]Batch summary[/]").RuleStyle("grey"));
+        AnsiConsole.WriteLine(BatchRunSummary.Format(result));
+        AnsiConsole.WriteLine();
+    }
 }
diff --git a/CodeSmellAuditor.Cli/Program.cs b/CodeSmellAuditor.Cli/Program.cs
index 181fc70..8f48ce3 100644
--- a/CodeSmellAuditor.Cli/Program.cs
+++ b/CodeSmellAuditor.Cli/Program.cs
@@ -91,8 +91,12 @@ static void WaitForExit()
 
 if (cliArgs.Mode == CliMode.Batch)
 {
-    await host.RunAsync(rulesPath, targetsPath);
-    AnsiConsole.MarkupLine("[bold green]Batch processing complete.[/]");
+    AuditRunResult batchResult = await host.RunAsync(rulesPath, targetsPath);
+    Environment.ExitCode = batchResult.ExitCode;
+    AnsiConsole.MarkupLine(
+        batchResult.AllPassed
+            ? "[bold green]Batch processing complete.[/]"
+            : "[bold yellow]Batch processing complete with failures.[/]");
     WaitForExit();
     return;
 }
@@ -100,7 +104,7 @@ static void WaitForExit()
 try
 {
     AuditRunResult sniffResult = await host.RunSniffAsync(rulesPath, cliArgs.SniffPath!);
-    Environment.ExitCode = sniffResult.AllPassed ? 0 : 1;
+    Environment.ExitCode = sniffResult.ExitCode;
 }
 catch (Exception ex) when (ex is FileNotFoundException or ArgumentException)
 {
diff --git a/CodeSmellAuditor.Core.Tests/AuditRunResultTests.cs b/CodeSmellAuditor.Core.Tests/AuditRunResultTests.cs
new file mode 100644
index 0000000..b641667
--- /dev/null
+++ b/CodeSmellAuditor.Core.Tests/AuditRunResultTests.cs
@@ -0,0 +1,70 @@
+using CodeSmellAuditor.Cli;
+using CodeSmellAuditor.Core;
+using Xunit;
+
+namespace CodeSmellAuditor.Core.Tests;
+
+public class AuditRunResultTests
+{
+    [Fact]
+    public void ExitCode_AllPassed_IsZero()
+    {
+        var result = new AuditRunResult(new[]
+        {
+            new FileAuditResult("A.cs", "a.md", HasPassed: true),
+            new FileAuditResult("B.cs", "b.md", HasPassed: true)
+        });
+
+        Assert.True(result.AllPassed);
+        Assert.Equal(0, result.ExitCode);
+    }
+
+    [Fact]
+    public void ExitCode_AnyFailure_IsOne()
+    {
+        var result = new AuditRunResult(new[]
+        {
+            new FileAuditResult("A.cs", "a.md", HasPassed: true),
+            new FileAuditResult("B.cs", "b.md", HasPassed: false)
+        });
+
+        Assert.False(result.AllPassed);
+        Assert.Equal(1, result.ExitCode);
+    }
+
+    [Fact]
+    public void ExitCode_EmptyRun_IsOne()
+    {
+        var result = new AuditRunResult(Array.Empty<FileAuditResult>());
+
+        Assert.False(result.AllPassed);
+        Assert.Equal(1, result.ExitCode);
+    }
+}
+
+public class BatchRunSummaryTests
+{
+    [Fact]
+    public void Format_EmptyRun_ReportsZeroFiles()
+    {
+        string text = BatchRunSummary.Format(new AuditRunResult(Array.Empty<FileAuditResult>()));
+
+        Assert.Equal("Batch summary: 0 files audited.", text);
+    }
+
+    [Fact]
+    public void Format_MixedResults_ListsPassFailPerFile()
+    {
+        var result = new AuditRunResult(new[]
+        {
+            new FileAuditResult("Good.cs", "g.md", HasPassed: true),
+            new FileAuditResult("Bad.cs", "b.md", HasPassed: false)
+        });
+
+        string text = BatchRunSummary.Format(result);
+
+        Assert.Contains("Batch summary: 2 files - 1 passed, 1 failed", text);
+        Assert.Contains("PASS  Good.cs", text);
+        Assert.Contains("FAIL  Bad.cs", text);
+    }
+}
diff --git a/CodeSmellAuditor.Core/AuditRunResult.cs b/CodeSmellAuditor.Core/AuditRunResult.cs
index 4aa1168..d513a1b 100644
--- a/CodeSmellAuditor.Core/AuditRunResult.cs
+++ b/CodeSmellAuditor.Core/AuditRunResult.cs
@@ -5,4 +5,10 @@ public record FileAuditResult(string FileName, string ReportPath, bool HasPassed
 public record AuditRunResult(IReadOnlyList<FileAuditResult> FileResults)
 {
     public bool AllPassed => FileResults.Count > 0 && FileResults.All(result => result.HasPassed);
+
+    /// <summary>
+    /// Process exit code for scriptable hosts: 0 when every audited file passed, otherwise 1.
+    /// Empty runs are treated as failure (nothing to pass).
+    /// </summary>
+    public int ExitCode => AllPassed ? 0 : 1;
 }
diff --git a/README.md b/README.md
index 9ffeabd..ac9f652 100644
--- a/README.md
+++ b/README.md
@@ -16,10 +16,11 @@ This is an **AI-assisted semantic code reviewer**, not a deterministic static an
 - Local Ollama only — source stays on your machine
 - Streaming terminal output with Spectre Status spinner until first token
 - Timestamped markdown reports under `WorkstationStorage/Reports/`
-- Pass/fail parsed from a `Status:` line in the report; `sniff` sets process exit codes
+- Pass/fail parsed from a `Status:` line in the report; batch and sniff set process exit codes (`0`/`1`)
+- Batch mode prints a pass/fail summary after all Targets files; still waits for Enter (desk UX)
 - Layered Core / Cli / Tests solution with constructor injection at the composition root
 - Compact rule excerpts with character-budget validation before each audit
-- 25 xUnit tests for rule loading, prompt building, pass/fail parsing, and engine orchestration (fakes; no Ollama in CI)
+- 30 xUnit tests for rule loading, prompt building, pass/fail parsing, summaries, and engine orchestration (fakes; no Ollama in CI)
 - Ubuntu CI via GitHub Actions
 
 ## Architecture
diff --git a/docs/architecture.md b/docs/architecture.md
index 2c01f91..a479ae5 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -102,7 +102,7 @@ Core does not reference Cli. External AI and file I/O are behind interfaces or i
 
 | Mode | Invocation | Source | Exit behavior |
 |------|------------|--------|---------------|
-| Batch | no args | `WorkstationStorage/Targets/*.cs` | Enter-to-exit; no exit code yet |
+| Batch | no args | `WorkstationStorage/Targets/*.cs` | Pass/fail summary; exit `0`/`1` from `AuditRunResult`; still Enter-to-exit for desk UX |
 | Sniff | `sniff path\to\File.cs` | external path in place | no Enter wait; exit `0`/`1` from pass/fail |
 
-Both modes reuse `CliAuditHost` Status wrapping and `AuditEngine.AuditFileAsync`. Rules and reports always come from auditor storage; sniff never copies into Targets.
+Both modes reuse `CliAuditHost` Status wrapping and `AuditEngine.AuditFileAsync`. Rules and reports always come from auditor storage; sniff never copies into Targets. Empty batch runs (no `*.cs` targets) exit `1`.