diff --git a/api/include/opentelemetry/propagators/composite_http_propagator.h b/api/include/opentelemetry/propagators/composite_http_propagator.h
index 9456b01857..9fc306e94b 100644
--- a/api/include/opentelemetry/propagators/composite_http_propagator.h
+++ b/api/include/opentelemetry/propagators/composite_http_propagator.h
@@ -26,6 +26,12 @@ namespace propagators
     template <typename T>
     class CompositeHTTPPropagator(trace::propagation::HTTPTextFormat<T>) {
         public:
+            // Rules that manages how context will be extracted from carrier.
+            using Getter = nostd::string_view(*)(const T &carrier, nostd::string_view trace_type);
+
+            // Rules that manages how context will be injected to carrier.
+            using Setter = void(*)(T &carrier, nostd::string_view trace_type,nostd::string_view trace_description);
+
             // Initializes a Composite Http Propagator with given propagators
             CompositeHTTPPropagator(nostd::span<trace::propagation::HTTPTextFormat> &propagators) {
                 this.propagators_ = propagators;
diff --git a/api/include/opentelemetry/trace/default_span.h b/api/include/opentelemetry/trace/default_span.h
index eed4db80cc..f0c574243f 100644
--- a/api/include/opentelemetry/trace/default_span.h
+++ b/api/include/opentelemetry/trace/default_span.h
@@ -67,9 +67,9 @@ class DefaultSpan: public Span {
     DefaultSpan(DefaultSpan&& spn) : span_context_(spn.GetContext()) {}
     DefaultSpan(const DefaultSpan& spn) : span_context_(spn.GetContext()) {}
 
-//    trace::Tracer &tracer() const noexcept {
-//       return trace::Tracer(); // Invalid tracer
-//    }
+    trace::Tracer &tracer() noexcept {
+      return tracer_; // Invalid tracer
+    }
 
     // Creates an instance of this class with spancontext.
     static DefaultSpan Create(SpanContext span_context) {
@@ -78,6 +78,7 @@ class DefaultSpan: public Span {
 
   private:
     SpanContext span_context_;
+    trace::Tracer tracer_;
 };
 }
 OPENTELEMETRY_END_NAMESPACE
\ No newline at end of file
diff --git a/api/include/opentelemetry/trace/span.h b/api/include/opentelemetry/trace/span.h
index d782738bbe..c33e61f4ba 100644
--- a/api/include/opentelemetry/trace/span.h
+++ b/api/include/opentelemetry/trace/span.h
@@ -153,7 +153,7 @@ class Span
   // AddEvent).
   virtual bool IsRecording() const noexcept = 0;
 
-//  virtual trace::Tracer &tracer() const noexcept = 0;
+  virtual trace::Tracer &tracer() noexcept = 0;
 };
 }  // namespace trace
 OPENTELEMETRY_END_NAMESPACE
diff --git a/api/include/opentelemetry/trace/tracer.h b/api/include/opentelemetry/trace/tracer.h
index 114f6dca19..3df8c16c7f 100644
--- a/api/include/opentelemetry/trace/tracer.h
+++ b/api/include/opentelemetry/trace/tracer.h
@@ -1,27 +1,29 @@
-//#pragma once
-//
-//#include "opentelemetry/nostd/string_view.h"
-//#include "opentelemetry/nostd/unique_ptr.h"
-//#include "opentelemetry/trace/span.h"
-//#include "opentelemetry/version.h"
-//
-//#include <chrono>
-//
-//OPENTELEMETRY_BEGIN_NAMESPACE
-//namespace trace
-//{
-///**
-// * Handles span creation and in-process context propagation.
-// *
-// * This class provides methods for manipulating the context, creating spans, and controlling spans'
-// * lifecycles.
-// */
-//class Span;
-//
-//struct StartSpanOptions;
-//
-//class Tracer
-//{
+#pragma once
+
+#include "opentelemetry/nostd/string_view.h"
+#include "opentelemetry/nostd/unique_ptr.h"
+#include "opentelemetry/trace/span.h"
+#include "opentelemetry/version.h"
+
+#include <chrono>
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace trace
+{
+/**
+ * Handles span creation and in-process context propagation.
+ *
+ * This class provides methods for manipulating the context, creating spans, and controlling spans'
+ * lifecycles.
+ */
+class Span;
+
+struct StartSpanOptions;
+
+class Tracer
+{
+public:
+    Tracer() = default;
 //public:
 //  virtual ~Tracer() = default;
 //  /**
@@ -86,6 +88,6 @@
 //  }
 //
 //  virtual void CloseWithMicroseconds(uint64_t timeout) noexcept = 0;
-//};
-//}  // namespace trace
-//OPENTELEMETRY_END_NAMESPACE
\ No newline at end of file
+};
+}  // namespace trace
+OPENTELEMETRY_END_NAMESPACE
\ No newline at end of file