diff --git a/BUILD.gn b/BUILD.gn
index 12f7bad48f79d3a1ee7e78701c28dce490dafc6b..5af0dc93c5fa4abb227e3668733fb33e7a491f68 100755
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -92,6 +92,25 @@ ohos_shared_library("syscap_tool_shared") {
   part_name = "syscap_codec"
 }
 
+ohos_shared_library("syscap_interface_shared") {
+  include_dirs = [ "./interfaces/inner_api/include" ]
+  sources = [ "./interfaces/inner_api/syscap_interface.c" ]
+
+  deps = [ "//third_party/bounds_checking_function:libsec_static" ]
+
+  if (defined(ohos_lite)) {
+    deps += [ "//build/lite/config/component/cJSON:cjson_static" ]
+  } else {
+    deps += [ "//third_party/cJSON:cjson_static" ]
+  }
+
+  subsystem_name = "developtools"
+  part_name = "syscap_codec"
+}
+
 group("syscap_codec") {
-  deps = [ ":syscap_tool_shared" ]
+  deps = [
+    ":syscap_interface_shared",
+    ":syscap_tool_shared",
+  ]
 }
diff --git a/interfaces/inner_api/syscap_interface.c b/interfaces/inner_api/syscap_interface.c
new file mode 100644
index 0000000000000000000000000000000000000000..8b239c274e8904cd3946dc67a8bcdd33a661d832
--- /dev/null
+++ b/interfaces/inner_api/syscap_interface.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2022-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <securec.h>
+#include <stdio.h>
+#include <string.h>
+#include "syscap_interface.h"
+
+#define PCID_OUT_BUFFER 32
+#define MAX_SYSCAP_STR_LEN 128
+
+#define PRINT_ERR(...) \
+    do { \
+        printf("ERROR: in file %s at line %d -> ", __FILE__, __LINE__); \
+        printf(__VA_ARGS__); \
+    } while (0)
+
+bool EncodeOsSyscap(int output[32])
+{
+    uint8_t *outputArray = (uint8_t *)malloc(sizeof(int) * PCID_OUT_BUFFER);
+    if (outputArray == NULL) {
+        PRINT_ERR("malloc failed.");
+        return false;
+    }
+    (void)memset_s(outputArray, sizeof(int) * PCID_OUT_BUFFER, 0, sizeof(int) * PCID_OUT_BUFFER);
+
+    uint16_t countBytes = PCID_OUT_BUFFER * sizeof(int);
+    for (uint16_t i = 0; i < countBytes; i++) {
+        outputArray[i] |= 0XFF;
+    }
+    int ret = memcpy_s(output, sizeof(int) * PCID_OUT_BUFFER, outputArray, sizeof(int) * PCID_OUT_BUFFER);
+    if (ret != 0) {
+        PRINT_ERR("memcpy_s failed.");
+        free(outputArray);
+        return false;
+    }
+    free(outputArray);
+    return true;
+}
+
+bool EncodePrivateSyscap(char *output, int *outputLen)
+{
+    static char syscapStr[MAX_SYSCAP_STR_LEN] = "Systemcapability.Ai.AiEngine";
+    int ret = strcpy_s(output, MAX_SYSCAP_STR_LEN, syscapStr);
+    if (ret != 0) {
+        PRINT_ERR("strcpy_s failed.");
+        return false;
+    }
+    *outputLen = strlen(syscapStr);
+
+    return true;
+}
\ No newline at end of file
diff --git a/interfaces/inner_api/syscap_interface.h b/interfaces/inner_api/syscap_interface.h
new file mode 100644
index 0000000000000000000000000000000000000000..1649a960d0f4a8b276e6be3292c590527ecd42e0
--- /dev/null
+++ b/interfaces/inner_api/syscap_interface.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _SYSCAP_INTERFACE_H
+#define _SYSCAP_INTERFACE_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+typedef struct ProductCompatibilityIDHead {
+    uint16_t apiVersion : 15;
+    uint16_t apiVersionType : 1;
+    uint16_t systemType : 3;
+    uint16_t reserved : 13;
+    uint32_t manufacturerID;
+} PCIDHead; // to do
+
+
+bool EncodeOsSyscap(int output[32]);
+bool DecodeOsSyscap(int input[32], char **output, int *outputCnt, int** outputLen);
+bool EncodePrivateSyscap(char *output, int *outputLen);
+bool DecodePrivateSyscap(char *input, int inputLen, char *output, int *outputCnt, int **outputLen);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif /* _SYSCAP_INTERFACE_H */
\ No newline at end of file