diff --git a/ROADMAP.md b/ROADMAP.md
index 23faf24..534a344 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -38,7 +38,7 @@ Treat JSON config as a declarative control plane that compiles into scene, resou
 - [~] Explicit pass scheduling and backend submission planning (schedule only; no backend plan)
 
 ### Ultra Plan: "Probe Fortress"
-- [~] Probe hooks (config/render graph/graphics reports wired; missing `OnLoadScene`, `OnDraw`, `OnPresent`, `OnFrameEnd`)
+- [~] Probe hooks (config/render graph/graphics reports wired; `OnDraw`/`OnPresent`/`OnFrameEnd` now emit trace-gated runtime probes; `OnLoadScene` still missing)
 - [x] Pipeline compatibility checks (mesh layout vs shader inputs) via shader pipeline validator
 - [x] Sampler limits enforced from bgfx caps
 - [ ] Shader uniform compatibility enforcement
diff --git a/src/services/impl/bgfx_graphics_backend.cpp b/src/services/impl/bgfx_graphics_backend.cpp
index 7e24893..c92b18c 100644
--- a/src/services/impl/bgfx_graphics_backend.cpp
+++ b/src/services/impl/bgfx_graphics_backend.cpp
@@ -1168,6 +1168,11 @@ bool BgfxGraphicsBackend::EndFrame(GraphicsDeviceHandle device) {
         logger_->Trace("BgfxGraphicsBackend", "EndFrame",
                        "frameNumber=" + std::to_string(frameNumber));
     }
+    if (ShouldEmitRuntimeProbe()) {
+        const std::string details = "frameNumber=" + std::to_string(frameNumber);
+        ReportRuntimeProbe("FRAME_PRESENT", "Frame presented", details);
+        ReportRuntimeProbe("FRAME_END", "Frame end", details);
+    }
     return true;
 }
 
@@ -1256,6 +1261,14 @@ void BgfxGraphicsBackend::Draw(GraphicsDeviceHandle device, GraphicsPipelineHand
                        ", indexCount=" + std::to_string(indexCount) +
                        ", totalVertices=" + std::to_string(vb->vertexCount));
     }
+    if (ShouldEmitRuntimeProbe()) {
+        ReportRuntimeProbe(
+            "DRAW_SUBMIT",
+            "Draw submitted",
+            "indexCount=" + std::to_string(indexCount) +
+                ", indexOffset=" + std::to_string(indexOffset) +
+                ", vertexOffset=" + std::to_string(vertexOffset));
+    }
 
     // Validate bounds to prevent GPU driver crashes
     // Based on crash analysis from sdl3_app.log where invalid parameters caused GPU segfault
@@ -1314,6 +1327,25 @@ void BgfxGraphicsBackend::Draw(GraphicsDeviceHandle device, GraphicsPipelineHand
     bgfx::submit(viewId_, pipelineIt->second->program);
 }
 
+bool BgfxGraphicsBackend::ShouldEmitRuntimeProbe() const {
+    if (!probeService_ || !logger_) {
+        return false;
+    }
+    const LogLevel level = logger_->GetLevel();
+    return level == LogLevel::TRACE || level == LogLevel::DEBUG;
+}
+
+void BgfxGraphicsBackend::ReportRuntimeProbe(const std::string& code,
+                                             const std::string& message,
+                                             const std::string& details) const {
+    ProbeReport report{};
+    report.severity = ProbeSeverity::Info;
+    report.code = code;
+    report.message = message;
+    report.details = details;
+    probeService_->Report(report);
+}
+
 GraphicsDeviceHandle BgfxGraphicsBackend::GetPhysicalDevice() const {
     return nullptr;
 }
diff --git a/src/services/impl/bgfx_graphics_backend.hpp b/src/services/impl/bgfx_graphics_backend.hpp
index fcc0083..55bf640 100644
--- a/src/services/impl/bgfx_graphics_backend.hpp
+++ b/src/services/impl/bgfx_graphics_backend.hpp
@@ -163,6 +163,10 @@ private:
     void DestroyPipelines();
     void DestroyBuffers();
     bool HasProcessedFrame() const { return frameCount_ > 0; }
+    bool ShouldEmitRuntimeProbe() const;
+    void ReportRuntimeProbe(const std::string& code,
+                            const std::string& message,
+                            const std::string& details = "") const;
 
     std::shared_ptr<IConfigService> configService_;
     std::shared_ptr<IPlatformService> platformService_;