diff --git a/c/lib.cpp b/c/lib.cpp
index 581d3bcc..06d75ead 100644
--- a/c/lib.cpp
+++ b/c/lib.cpp
@@ -118,6 +118,15 @@ search_result_t search_(index_dense_t* index, void const* vector, scalar_kind_t
 
 extern "C" {
 
+USEARCH_EXPORT char const* usearch_version(void) {
+    int major = USEARCH_VERSION_MAJOR;
+    int minor = USEARCH_VERSION_MINOR;
+    int patch = USEARCH_VERSION_PATCH;
+    static char version[32];
+    sprintf(version, "%d.%d.%d", major, minor, patch);
+    return version;
+}
+
 USEARCH_EXPORT usearch_index_t usearch_init(usearch_init_options_t* options, usearch_error_t* error) {
 
     USEARCH_ASSERT(options && error && "Missing arguments");
@@ -275,6 +284,16 @@ USEARCH_EXPORT size_t usearch_expansion_search(usearch_index_t index, usearch_er
     return reinterpret_cast<index_dense_t*>(index)->expansion_search();
 }
 
+USEARCH_EXPORT size_t usearch_memory_usage(usearch_index_t index, usearch_error_t* error) {
+    USEARCH_ASSERT(index && error && "Missing arguments");
+    return reinterpret_cast<index_dense_t*>(index)->memory_usage();
+}
+
+USEARCH_EXPORT char const* usearch_hardware_acceleration(usearch_index_t index, usearch_error_t* error) {
+    USEARCH_ASSERT(index && error && "Missing arguments");
+    return reinterpret_cast<index_dense_t*>(index)->metric().isa_name();
+}
+
 USEARCH_EXPORT void usearch_change_expansion_add(usearch_index_t index, size_t expansion, usearch_error_t* error) {
     USEARCH_ASSERT(index && error && "Missing arguments");
     reinterpret_cast<index_dense_t*>(index)->change_expansion_add(expansion);
@@ -348,11 +367,11 @@ USEARCH_EXPORT size_t usearch_search(
     return result.dump_to(found_keys, found_distances);
 }
 
-USEARCH_EXPORT size_t usearch_filtered_search(                                //
-    usearch_index_t index,                                                    //
-    void const* query, usearch_scalar_kind_t query_kind,                      //
-    int (*filter)(usearch_key_t key, void* filter_state), void* filter_state, //
-    size_t results_limit, usearch_key_t* found_keys, usearch_distance_t* found_distances, usearch_error_t* error) {
+USEARCH_EXPORT size_t usearch_filtered_search(                                 //
+    usearch_index_t index,                                                     //
+    void const* query, usearch_scalar_kind_t query_kind, size_t results_limit, //
+    int (*filter)(usearch_key_t key, void* filter_state), void* filter_state,  //
+    usearch_key_t* found_keys, usearch_distance_t* found_distances, usearch_error_t* error) {
 
     USEARCH_ASSERT(index && query && filter && error && "Missing arguments");
     search_result_t result =
diff --git a/c/test.c b/c/test.c
index 1f086a9a..2498aa06 100644
--- a/c/test.c
+++ b/c/test.c
@@ -72,6 +72,8 @@ void test_init(size_t const collection_size, size_t const dimensions) {
     ASSERT(usearch_capacity(index, &error) == collection_size, error);
     ASSERT(usearch_dimensions(index, &error) == dimensions, error);
     ASSERT(usearch_connectivity(index, &error) == opts.connectivity, error);
+    ASSERT(usearch_hardware_acceleration(index, &error), error);
+    ASSERT(usearch_memory_usage(index, &error), error);
 
     usearch_free(index, &error);
     ASSERT(!error, error);
@@ -361,6 +363,8 @@ void test_view(size_t const collection_size, size_t const dimensions) {
 }
 
 int main(int argc, char const* argv[]) {
+    printf("Running tests...\n");
+    printf("USearch version: %s\n", usearch_version());
 
     size_t collection_sizes[] = {11, 512};
     size_t dimensions[] = {83, 2}; // Not all distance functions make sense for 1 dimensional data
diff --git a/c/usearch.h b/c/usearch.h
index 92199e0d..5632aa44 100644
--- a/c/usearch.h
+++ b/c/usearch.h
@@ -97,6 +97,12 @@ USEARCH_EXPORT typedef struct usearch_init_options_t {
     bool multi;
 } usearch_init_options_t;
 
+/**
+ *  @brief Retrieves the version of the library.
+ *  @return The version of the library.
+ */
+USEARCH_EXPORT char const* usearch_version(void);
+
 /**
  *  @brief Initializes a new instance of the index.
  *  @param options Pointer to the `usearch_init_options_t` structure containing initialization options.
@@ -112,6 +118,22 @@ USEARCH_EXPORT usearch_index_t usearch_init(usearch_init_options_t* options, use
  */
 USEARCH_EXPORT void usearch_free(usearch_index_t index, usearch_error_t* error);
 
+/**
+ *  @brief Reports the memory usage of the index.
+ *  @param[in] index The handle to the USearch index to be queried.
+ *  @param[out] error Pointer to a string where the error message will be stored, if an error occurs.
+ *  @return Number of bytes used by the index.
+ */
+USEARCH_EXPORT size_t usearch_memory_usage(usearch_index_t index, usearch_error_t* error);
+
+/**
+ *  @brief Reports the SIMD capabilities used by the index on the current CPU.
+ *  @param[in] index The handle to the USearch index to be queried.
+ *  @param[out] error Pointer to a string where the error message will be stored, if an error occurs.
+ *  @return The codename of the SIMD instruction set used by the index.
+ */
+USEARCH_EXPORT char const* usearch_hardware_acceleration(usearch_index_t index, usearch_error_t* error);
+
 /**
  *  @brief Reports expected file size after serialization.
  *  @param[in] index The handle to the USearch index to be serialized.
@@ -320,10 +342,10 @@ USEARCH_EXPORT size_t usearch_count(usearch_index_t index, usearch_key_t, usearc
  *  @param[out] error Pointer to a string where the error message will be stored, if an error occurs.
  *  @return Number of found matches.
  */
-USEARCH_EXPORT size_t usearch_search(                           //
-    usearch_index_t index,                                      //
-    void const* query_vector, usearch_scalar_kind_t query_kind, //
-    size_t count, usearch_key_t* keys, usearch_distance_t* distances, usearch_error_t* error);
+USEARCH_EXPORT size_t usearch_search(                                         //
+    usearch_index_t index,                                                    //
+    void const* query_vector, usearch_scalar_kind_t query_kind, size_t count, //
+    usearch_key_t* keys, usearch_distance_t* distances, usearch_error_t* error);
 
 /**
  *  @brief  Performs k-Approximate Nearest Neighbors (kANN) Search for closest vectors to query,
@@ -333,6 +355,8 @@ USEARCH_EXPORT size_t usearch_search(                           //
  *  @param[in] query_vector Pointer to the query vector data.
  *  @param[in] query_kind The scalar type used in the query vector data.
  *  @param[in] count Upper bound on the number of neighbors to search, the "k" in "kANN".
+ *  @param[in] filter The custom filter function that returns `true` for vectors to be included.
+ *  @param[in] filter_state The @b optional state pointer to be passed to the custom filter function.
  *  @param[out] keys Output buffer for up to `count` nearest neighbors keys.
  *  @param[out] distances Output buffer for up to `count` distances to nearest neighbors.
  *  @param[out] error Pointer to a string where the error message will be stored, if an error occurs.
@@ -340,9 +364,9 @@ USEARCH_EXPORT size_t usearch_search(                           //
  */
 USEARCH_EXPORT size_t usearch_filtered_search(                                //
     usearch_index_t index,                                                    //
-    void const* query_vector, usearch_scalar_kind_t query_kind,               //
+    void const* query_vector, usearch_scalar_kind_t query_kind, size_t count, //
     int (*filter)(usearch_key_t key, void* filter_state), void* filter_state, //
-    size_t count, usearch_key_t* keys, usearch_distance_t* distances, usearch_error_t* error);
+    usearch_key_t* keys, usearch_distance_t* distances, usearch_error_t* error);
 
 /**
  *  @brief Retrieves the vector associated with the given key from the index.