diff --git a/prometeu-compiler/frontends/prometeu-frontend-pbs/build.gradle.kts b/prometeu-compiler/frontends/prometeu-frontend-pbs/build.gradle.kts
index 7b46f191..8b52aea5 100644
--- a/prometeu-compiler/frontends/prometeu-frontend-pbs/build.gradle.kts
+++ b/prometeu-compiler/frontends/prometeu-frontend-pbs/build.gradle.kts
@@ -5,5 +5,6 @@ plugins {
 dependencies {
     implementation(project(":prometeu-infra"))
 
+    implementation(project(":prometeu-compiler:prometeu-frontend-api"))
     implementation(project(":prometeu-compiler:prometeu-compiler-core"))
 }
\ No newline at end of file
diff --git a/prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/java/p/studio/compiler/services/PBSFrontendPhaseService.java b/prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/java/p/studio/compiler/services/PBSFrontendPhaseService.java
new file mode 100644
index 00000000..2ab05f6e
--- /dev/null
+++ b/prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/java/p/studio/compiler/services/PBSFrontendPhaseService.java
@@ -0,0 +1,25 @@
+package p.studio.compiler.services;
+
+import lombok.extern.slf4j.Slf4j;
+import p.studio.compiler.messages.BuildingIssueSink;
+import p.studio.compiler.messages.FrontendPhaseContext;
+import p.studio.compiler.models.IRBackend;
+import p.studio.utilities.logs.LogAggregator;
+
+@Slf4j
+public class PBSFrontendPhaseService implements FrontendPhaseService {
+    @Override
+    public IRBackend compile(final FrontendPhaseContext ctx, final LogAggregator logs, final BuildingIssueSink issues) {
+        for (final var pId : ctx.stack.reverseTopologicalOrder) {
+            for (final var fId : ctx.fileTable.getFiles(pId)) {
+                final var sourceHandle = ctx.fileTable.get(fId);
+                sourceHandle.readUtf8().ifPresentOrElse(
+                    utf8Content -> logs.using(log).info("File content: %s".formatted(utf8Content)),
+                    () -> issues.report(builder -> builder
+                            .error(true)
+                            .message("Failed to read file content: %s".formatted(sourceHandle.toString()))));
+            }
+        }
+        return new IRBackend();
+    }
+}
diff --git a/prometeu-compiler/prometeu-build-pipeline/build.gradle.kts b/prometeu-compiler/prometeu-build-pipeline/build.gradle.kts
index e723a039..393bd0e4 100644
--- a/prometeu-compiler/prometeu-build-pipeline/build.gradle.kts
+++ b/prometeu-compiler/prometeu-build-pipeline/build.gradle.kts
@@ -6,4 +6,6 @@ dependencies {
     api(project(":prometeu-infra"))
     implementation(project(":prometeu-compiler:prometeu-deps"))
     implementation(project(":prometeu-compiler:prometeu-compiler-core"))
+    implementation(project(":prometeu-compiler:prometeu-frontend-api"))
+    implementation(project(":prometeu-compiler:prometeu-frontend-registry"))
 }
\ No newline at end of file
diff --git a/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/models/BuilderPipelineContext.java b/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/models/BuilderPipelineContext.java
index 28f3b04a..b9ebc302 100644
--- a/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/models/BuilderPipelineContext.java
+++ b/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/models/BuilderPipelineContext.java
@@ -14,6 +14,7 @@ public class BuilderPipelineContext {
     public ResolvedWorkspace resolvedWorkspace;
 
     public FileTable fileTable;
+    public IRBackend irBackend;
 
     private BuilderPipelineContext(
             final BuilderPipelineConfig config,
diff --git a/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/FrontendPhasePipelineStage.java b/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/FrontendPhasePipelineStage.java
index 2836ba70..2a1d5303 100644
--- a/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/FrontendPhasePipelineStage.java
+++ b/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/FrontendPhasePipelineStage.java
@@ -1,7 +1,9 @@
 package p.studio.compiler.workspaces.stages;
 
 import lombok.extern.slf4j.Slf4j;
+import p.studio.compiler.FrontendRegistryService;
 import p.studio.compiler.messages.BuildingIssueSink;
+import p.studio.compiler.messages.FrontendPhaseContext;
 import p.studio.compiler.models.BuilderPipelineContext;
 import p.studio.compiler.workspaces.PipelineStage;
 import p.studio.utilities.logs.LogAggregator;
@@ -9,7 +11,20 @@ import p.studio.utilities.logs.LogAggregator;
 @Slf4j
 public class FrontendPhasePipelineStage implements PipelineStage {
     @Override
-    public BuildingIssueSink run(BuilderPipelineContext ctx, LogAggregator logs) {
-        return BuildingIssueSink.empty();
+    public BuildingIssueSink run(final BuilderPipelineContext ctx, final LogAggregator logs) {
+        final var frontedSpec = ctx.resolvedWorkspace.frontendSpec();
+        final var service = FrontendRegistryService.getFrontendPhaseService(frontedSpec.getLanguageId());
+        if (service.isEmpty()) {
+            return BuildingIssueSink.empty()
+                    .report(builder -> builder
+                            .error(true)
+                            .message("[BUILD]: unable to find a service for frontend phase: " + frontedSpec.getLanguageId()));
+        }
+        final var projectTable = ctx.resolvedWorkspace.graph().projectTable();
+        final var fileTable = ctx.fileTable;
+        final var frontendPhaseContext = new FrontendPhaseContext(projectTable, fileTable, ctx.resolvedWorkspace.stack());
+        final var issues = BuildingIssueSink.empty();
+        ctx.irBackend = service.get().compile(frontendPhaseContext, logs, issues);
+        return issues;
     }
 }
diff --git a/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/LoadSourcesPipelineStage.java b/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/LoadSourcesPipelineStage.java
index b5583fac..b2c7e197 100644
--- a/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/LoadSourcesPipelineStage.java
+++ b/prometeu-compiler/prometeu-build-pipeline/src/main/java/p/studio/compiler/workspaces/stages/LoadSourcesPipelineStage.java
@@ -82,7 +82,6 @@ public class LoadSourcesPipelineStage implements PipelineStage {
             // register in dense tables
             final var relativePath = pd.getRootPath().relativize(canonPath);
             final var sourceHandle = new SourceHandle(pId, relativePath, canonPath, size, lastModified, ctx.sourceProviderFactory);
-            logs.using(log).debug("Registering: " + sourceHandle);
             ctx.fileTable.register(sourceHandle);
         }
     }
diff --git a/prometeu-compiler/prometeu-deps/src/main/java/p/studio/compiler/models/BuildStack.java b/prometeu-compiler/prometeu-compiler-core/src/main/java/p/studio/compiler/models/BuildStack.java
similarity index 100%
rename from prometeu-compiler/prometeu-deps/src/main/java/p/studio/compiler/models/BuildStack.java
rename to prometeu-compiler/prometeu-compiler-core/src/main/java/p/studio/compiler/models/BuildStack.java
diff --git a/prometeu-compiler/prometeu-compiler-core/src/main/java/p/studio/compiler/models/SourceHandle.java b/prometeu-compiler/prometeu-compiler-core/src/main/java/p/studio/compiler/models/SourceHandle.java
index 61efe3c2..c11b7796 100644
--- a/prometeu-compiler/prometeu-compiler-core/src/main/java/p/studio/compiler/models/SourceHandle.java
+++ b/prometeu-compiler/prometeu-compiler-core/src/main/java/p/studio/compiler/models/SourceHandle.java
@@ -12,6 +12,7 @@ import java.nio.file.Path;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
+import java.util.Optional;
 
 @EqualsAndHashCode(onlyExplicitlyIncluded = true)
 public class SourceHandle {
@@ -46,12 +47,16 @@ public class SourceHandle {
         this.provider = factory.create(canonPath);
     }
 
-    public byte[] readBytes() throws IOException {
-        return provider.read();
+    public Optional<byte[]> readBytes() {
+        try {
+            return Optional.ofNullable(provider.read());
+        } catch (IOException e) {
+            return Optional.empty();
+        }
     }
 
-    public String readUtf8() throws IOException {
-        return new String(readBytes(), StandardCharsets.UTF_8);
+    public Optional<String> readUtf8() {
+        return readBytes().map(bytes -> new String(bytes, StandardCharsets.UTF_8));
     }
 
     @Override
diff --git a/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/messages/FrontendPhaseContext.java b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/messages/FrontendPhaseContext.java
new file mode 100644
index 00000000..b98eab17
--- /dev/null
+++ b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/messages/FrontendPhaseContext.java
@@ -0,0 +1,20 @@
+package p.studio.compiler.messages;
+
+import p.studio.compiler.models.BuildStack;
+import p.studio.compiler.source.tables.FileTableReader;
+import p.studio.compiler.source.tables.ProjectTableReader;
+
+public class FrontendPhaseContext {
+    public final ProjectTableReader projectTable;
+    public final FileTableReader fileTable;
+    public final BuildStack stack;
+
+    public FrontendPhaseContext(
+            final ProjectTableReader projectTable,
+            final FileTableReader fileTable,
+            final BuildStack stack) {
+        this.projectTable = projectTable;
+        this.fileTable = fileTable;
+        this.stack = stack;
+    }
+}
diff --git a/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/messages/FrontendPhaseRequest.java b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/messages/FrontendPhaseRequest.java
deleted file mode 100644
index 47397c1b..00000000
--- a/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/messages/FrontendPhaseRequest.java
+++ /dev/null
@@ -1,9 +0,0 @@
-package p.studio.compiler.messages;
-
-import p.studio.compiler.source.tables.FileTableReader;
-import p.studio.compiler.source.tables.ProjectTableReader;
-
-public record FrontendPhaseRequest(
-        ProjectTableReader projectTable,
-        FileTableReader fileTable) {
-}
diff --git a/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/models/IRBackend.java b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/models/IRBackend.java
new file mode 100644
index 00000000..599c0362
--- /dev/null
+++ b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/models/IRBackend.java
@@ -0,0 +1,4 @@
+package p.studio.compiler.models;
+
+public class IRBackend {
+}
diff --git a/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/services/FrontendPhaseService.java b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/services/FrontendPhaseService.java
new file mode 100644
index 00000000..88943f3a
--- /dev/null
+++ b/prometeu-compiler/prometeu-frontend-api/src/main/java/p/studio/compiler/services/FrontendPhaseService.java
@@ -0,0 +1,10 @@
+package p.studio.compiler.services;
+
+import p.studio.compiler.messages.BuildingIssueSink;
+import p.studio.compiler.messages.FrontendPhaseContext;
+import p.studio.compiler.models.IRBackend;
+import p.studio.utilities.logs.LogAggregator;
+
+public interface FrontendPhaseService {
+    IRBackend compile(FrontendPhaseContext request, LogAggregator logs, BuildingIssueSink empty);
+}
diff --git a/prometeu-compiler/prometeu-frontend-registry/build.gradle.kts b/prometeu-compiler/prometeu-frontend-registry/build.gradle.kts
index f4af920a..7eff67cf 100644
--- a/prometeu-compiler/prometeu-frontend-registry/build.gradle.kts
+++ b/prometeu-compiler/prometeu-frontend-registry/build.gradle.kts
@@ -6,5 +6,7 @@ dependencies {
     implementation(project(":prometeu-infra"))
     implementation(project(":prometeu-compiler:prometeu-compiler-core"))
 
+    implementation(project(":prometeu-compiler:prometeu-frontend-api"))
+
     implementation(project(":prometeu-compiler:frontends:prometeu-frontend-pbs"))
 }
\ No newline at end of file
diff --git a/prometeu-compiler/prometeu-frontend-registry/src/main/java/p/studio/compiler/FrontendRegistryService.java b/prometeu-compiler/prometeu-frontend-registry/src/main/java/p/studio/compiler/FrontendRegistryService.java
index 513e99c4..ee926f91 100644
--- a/prometeu-compiler/prometeu-frontend-registry/src/main/java/p/studio/compiler/FrontendRegistryService.java
+++ b/prometeu-compiler/prometeu-frontend-registry/src/main/java/p/studio/compiler/FrontendRegistryService.java
@@ -1,31 +1,31 @@
 package p.studio.compiler;
 
 import p.studio.compiler.models.FrontendSpec;
+import p.studio.compiler.services.FrontendPhaseService;
+import p.studio.compiler.services.PBSFrontendPhaseService;
 
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
 
 public class FrontendRegistryService {
-    private static final FrontendSpec[] FRONTEND_SPECS = {
-            PBSDefinitions.PBS,
-    };
-
-    private static final Map<String, FrontendSpec> FRONTENDS = new HashMap<>();
+    private static final Map<String, FrontendSpec> FRONTEND_SPECS = new HashMap<>();
+    private static final Map<String, FrontendPhaseService> FRONTEND_PHASE_SERVICES = new HashMap<>();
 
     static {
-        for (final var frontendSpec : FRONTEND_SPECS) {
-            FRONTENDS.put(frontendSpec.getLanguageId(), frontendSpec);
-        }
-        if (FRONTENDS.size() != FRONTEND_SPECS.length)
-            throw new IllegalStateException("Duplicate frontend specs found");
+        FRONTEND_SPECS.put(PBSDefinitions.PBS.getLanguageId(), PBSDefinitions.PBS);
+        FRONTEND_PHASE_SERVICES.put(PBSDefinitions.PBS.getLanguageId(), new PBSFrontendPhaseService());
     }
 
     public static FrontendSpec getDefaultFrontendSpec() {
-        return FRONTENDS.get(PBSDefinitions.PBS.getLanguageId());
+        return FRONTEND_SPECS.get(PBSDefinitions.PBS.getLanguageId());
     }
 
     public static Optional<FrontendSpec> getFrontendSpec(final String languageId) {
-        return Optional.ofNullable(FRONTENDS.get(languageId));
+        return Optional.ofNullable(FRONTEND_SPECS.get(languageId));
+    }
+
+    public static Optional<FrontendPhaseService> getFrontendPhaseService(final String languageId) {
+        return Optional.ofNullable(FRONTEND_PHASE_SERVICES.get(languageId));
     }
 }
\ No newline at end of file
diff --git a/test-projects/main/src/module-a/mod.barrel b/test-projects/main/src/module-a/mod.barrel
index e69de29b..eaed690d 100644
--- a/test-projects/main/src/module-a/mod.barrel
+++ b/test-projects/main/src/module-a/mod.barrel
@@ -0,0 +1 @@
+module-a.barrel: content
\ No newline at end of file
diff --git a/test-projects/main/src/module-a/source-1.pbs b/test-projects/main/src/module-a/source-1.pbs
index e69de29b..fde78521 100644
--- a/test-projects/main/src/module-a/source-1.pbs
+++ b/test-projects/main/src/module-a/source-1.pbs
@@ -0,0 +1 @@
+source-1.pbs content
\ No newline at end of file
diff --git a/test-projects/main/src/module-a/source-2.pbs b/test-projects/main/src/module-a/source-2.pbs
index e69de29b..0c9c3dc4 100644
--- a/test-projects/main/src/module-a/source-2.pbs
+++ b/test-projects/main/src/module-a/source-2.pbs
@@ -0,0 +1 @@
+source-2.pbs content
\ No newline at end of file
diff --git a/test-projects/main/src/module-a/source-3.pbs b/test-projects/main/src/module-a/source-3.pbs
index e69de29b..324efdbc 100644
--- a/test-projects/main/src/module-a/source-3.pbs
+++ b/test-projects/main/src/module-a/source-3.pbs
@@ -0,0 +1 @@
+source-3.pbs content
\ No newline at end of file