diff --git a/api/client.py b/api/client.py
new file mode 100644
index 0000000..4206924
--- /dev/null
+++ b/api/client.py
@@ -0,0 +1,147 @@
+import argparse
+import pickle
+import time
+from typing import Dict
+
+import numpy as np
+import requests
+from loguru import logger
+
+API_URL_MATCH = "http://127.0.0.1:8001/v1/match"
+API_URL_EXTRACT = "http://127.0.0.1:8001/v1/extract"
+API_URL_EXTRACT_V2 = "http://127.0.0.1:8001/v2/extract"
+
+
+def send_generate_request(path0: str, path1: str) -> Dict[str, np.ndarray]:
+    """
+    Send a request to the API to generate a match between two images.
+
+    Args:
+        path0 (str): The path to the first image.
+        path1 (str): The path to the second image.
+
+    Returns:
+        Dict[str, np.ndarray]: A dictionary containing the generated matches.
+            The keys are "keypoints0", "keypoints1", "matches0", and "matches1",
+            and the values are ndarrays of shape (N, 2), (N, 2), (N, 2), and
+            (N, 2), respectively.
+    """
+    files = {"image0": open(path0, "rb"), "image1": open(path1, "rb")}
+    try:
+        response = requests.post(API_URL_MATCH, files=files)
+        pred = {}
+        if response.status_code == 200:
+            pred = response.json()
+            for key in list(pred.keys()):
+                pred[key] = np.array(pred[key])
+        else:
+            print(
+                f"Error: Response code {response.status_code} - {response.text}"
+            )
+    finally:
+        files["image0"].close()
+        files["image1"].close()
+    return pred
+
+
+def send_generate_request1(path0: str) -> Dict[str, np.ndarray]:
+    """
+    Send a request to the API to extract features from an image.
+
+    Args:
+        path0 (str): The path to the image.
+
+    Returns:
+        Dict[str, np.ndarray]: A dictionary containing the extracted features.
+            The keys are "keypoints", "descriptors", and "scores", and the
+            values are ndarrays of shape (N, 2), (N, 128), and (N,),
+            respectively.
+    """
+    files = {"image": open(path0, "rb")}
+    try:
+        response = requests.post(API_URL_EXTRACT, files=files)
+        pred: Dict[str, np.ndarray] = {}
+        if response.status_code == 200:
+            pred = response.json()
+            for key in list(pred.keys()):
+                pred[key] = np.array(pred[key])
+        else:
+            print(
+                f"Error: Response code {response.status_code} - {response.text}"
+            )
+    finally:
+        files["image"].close()
+    return pred
+
+
+def send_generate_request2(image_path: str) -> Dict[str, np.ndarray]:
+    """
+    Send a request to the API to extract features from an image.
+
+    Args:
+        image_path (str): The path to the image.
+
+    Returns:
+        Dict[str, np.ndarray]: A dictionary containing the extracted features.
+            The keys are "keypoints", "descriptors", and "scores", and the
+            values are ndarrays of shape (N, 2), (N, 128), and (N,), respectively.
+    """
+    data = {
+        "image_path": image_path,
+        "max_keypoints": 1024,
+        "reference_points": [[0.0, 0.0], [1.0, 1.0]],
+    }
+    pred = {}
+    try:
+        response = requests.post(API_URL_EXTRACT_V2, json=data)
+        pred: Dict[str, np.ndarray] = {}
+        if response.status_code == 200:
+            pred = response.json()
+            for key in list(pred.keys()):
+                pred[key] = np.array(pred[key])
+        else:
+            print(
+                f"Error: Response code {response.status_code} - {response.text}"
+            )
+    except Exception as e:
+        print(f"An error occurred: {e}")
+    return pred
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="Send text to stable audio server and receive generated audio."
+    )
+    parser.add_argument(
+        "--image0",
+        required=False,
+        help="Path for the file's melody",
+        default="../datasets/sacre_coeur/mapping_rot/02928139_3448003521_rot45.jpg",
+    )
+    parser.add_argument(
+        "--image1",
+        required=False,
+        help="Path for the file's melody",
+        default="../datasets/sacre_coeur/mapping_rot/02928139_3448003521_rot90.jpg",
+    )
+    args = parser.parse_args()
+    for i in range(10):
+        t1 = time.time()
+        preds = send_generate_request(args.image0, args.image1)
+        t2 = time.time()
+        logger.info(f"Time cost1: {(t2 - t1)} seconds")
+
+    for i in range(10):
+        t1 = time.time()
+        preds = send_generate_request1(args.image0)
+        t2 = time.time()
+        logger.info(f"Time cost2: {(t2 - t1)} seconds")
+
+    for i in range(10):
+        t1 = time.time()
+        preds = send_generate_request2(args.image0)
+        t2 = time.time()
+        logger.info(f"Time cost2: {(t2 - t1)} seconds")
+
+    with open("preds.pkl", "wb") as f:
+        pickle.dump(preds, f)
diff --git a/api/server.py b/api/server.py
new file mode 100644
index 0000000..068c662
--- /dev/null
+++ b/api/server.py
@@ -0,0 +1,135 @@
+# server.py
+import sys
+from pathlib import Path
+from typing import Union
+
+import numpy as np
+import uvicorn
+from fastapi import FastAPI, File, UploadFile
+from fastapi.responses import JSONResponse
+from PIL import Image
+
+sys.path.append("..")
+from pydantic import BaseModel
+
+from ui.api import ImageMatchingAPI
+from ui.utils import DEVICE
+
+
+class ImageInfo(BaseModel):
+    image_path: str
+    max_keypoints: int
+    reference_points: list
+
+
+class ImageMatchingService:
+    def __init__(self, conf: dict, device: str):
+        self.api = ImageMatchingAPI(conf=conf, device=device)
+        self.app = FastAPI()
+        self.register_routes()
+
+    def register_routes(self):
+        @self.app.post("/v1/match")
+        async def match(
+            image0: UploadFile = File(...), image1: UploadFile = File(...)
+        ):
+            try:
+                image0_array = self.load_image(image0)
+                image1_array = self.load_image(image1)
+
+                output = self.api(image0_array, image1_array)
+
+                skip_keys = ["image0_orig", "image1_orig"]
+                pred = self.filter_output(output, skip_keys)
+
+                return JSONResponse(content=pred)
+            except Exception as e:
+                return JSONResponse(content={"error": str(e)}, status_code=500)
+
+        @self.app.post("/v1/extract")
+        async def extract(image: UploadFile = File(...)):
+            try:
+                image_array = self.load_image(image)
+                output = self.api.extract(image_array)
+                skip_keys = ["descriptors", "image", "image_orig"]
+                pred = self.filter_output(output, skip_keys)
+                return JSONResponse(content=pred)
+            except Exception as e:
+                return JSONResponse(content={"error": str(e)}, status_code=500)
+
+        @self.app.post("/v2/extract")
+        async def extract_v2(image_path: ImageInfo):
+            img_path = image_path.image_path
+            try:
+                safe_path = Path(img_path).resolve(strict=False)
+                image_array = self.load_image(str(safe_path))
+                output = self.api.extract(image_array)
+                skip_keys = ["descriptors", "image", "image_orig"]
+                pred = self.filter_output(output, skip_keys)
+                return JSONResponse(content=pred)
+            except Exception as e:
+                return JSONResponse(content={"error": str(e)}, status_code=500)
+
+    def load_image(self, file_path: Union[str, UploadFile]) -> np.ndarray:
+        """
+        Reads an image from a file path or an UploadFile object.
+
+        Args:
+            file_path: A file path or an UploadFile object.
+
+        Returns:
+            A numpy array representing the image.
+        """
+        if isinstance(file_path, str):
+            file_path = Path(file_path).resolve(strict=False)
+        else:
+            file_path = file_path.file
+        with Image.open(file_path) as img:
+            image_array = np.array(img)
+        return image_array
+
+    def filter_output(self, output: dict, skip_keys: list) -> dict:
+        pred = {}
+        for key, value in output.items():
+            if key in skip_keys:
+                continue
+            if isinstance(value, np.ndarray):
+                pred[key] = value.tolist()
+        return pred
+
+    def run(self, host: str = "0.0.0.0", port: int = 8001):
+        uvicorn.run(self.app, host=host, port=port)
+
+
+if __name__ == "__main__":
+    conf = {
+        "feature": {
+            "output": "feats-superpoint-n4096-rmax1600",
+            "model": {
+                "name": "superpoint",
+                "nms_radius": 3,
+                "max_keypoints": 4096,
+                "keypoint_threshold": 0.005,
+            },
+            "preprocessing": {
+                "grayscale": True,
+                "force_resize": True,
+                "resize_max": 1600,
+                "width": 640,
+                "height": 480,
+                "dfactor": 8,
+            },
+        },
+        "matcher": {
+            "output": "matches-NN-mutual",
+            "model": {
+                "name": "nearest_neighbor",
+                "do_mutual_check": True,
+                "match_threshold": 0.2,
+            },
+        },
+        "dense": False,
+    }
+
+    service = ImageMatchingService(conf=conf, device=DEVICE)
+    service.run()
diff --git a/format.sh b/format.sh
index 377f041..ada7140 100644
--- a/format.sh
+++ b/format.sh
@@ -1,3 +1,3 @@
-python -m flake8 ui/*.py hloc/*.py hloc/matchers/*.py hloc/extractors/*.py 
-python -m isort ui/*.py hloc/*.py hloc/matchers/*.py hloc/extractors/*.py
-python -m black ui/*.py hloc/*.py hloc/matchers/*.py hloc/extractors/*.py
\ No newline at end of file
+python -m flake8 ui/*.py api/*.py hloc/*.py hloc/matchers/*.py hloc/extractors/*.py 
+python -m isort ui/*.py api/*.py hloc/*.py hloc/matchers/*.py hloc/extractors/*.py
+python -m black ui/*.py api/*.py hloc/*.py hloc/matchers/*.py hloc/extractors/*.py
\ No newline at end of file
diff --git a/hloc/extractors/superpoint.py b/hloc/extractors/superpoint.py
index ee61839..d47f33a 100644
--- a/hloc/extractors/superpoint.py
+++ b/hloc/extractors/superpoint.py
@@ -48,4 +48,10 @@ def _init(self, conf):
         logger.info("Load SuperPoint model done.")
 
     def _forward(self, data):
-        return self.net(data, self.conf)
+        pred = self.net(data, self.conf)
+        pred = {
+            "keypoints": pred["keypoints"][0][None],
+            "scores": pred["scores"][0][None],
+            "descriptors": pred["descriptors"][0][None],
+        }
+        return pred
diff --git a/requirements.txt b/requirements.txt
index 4ec3af7..2c0a784 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,3 +36,4 @@ torchvision==0.19.0
 roma #dust3r
 tqdm
 yacs
+fastapi
diff --git a/ui/api.py b/ui/api.py
index bcbd697..bbabd05 100644
--- a/ui/api.py
+++ b/ui/api.py
@@ -147,6 +147,29 @@ def _forward(self, img0, img1):
             pred = match_features.match_images(self.matcher, pred0, pred1)
         return pred
 
+    @torch.inference_mode()
+    def extract(
+        self,
+        img0: np.ndarray,
+    ) -> Dict[str, np.ndarray]:
+        """Extract features from a single image.
+
+        Args:
+            img0 (np.ndarray): image
+
+        Returns:
+            Dict[str, np.ndarray]: feature dict
+        """
+
+        pred = extract_features.extract(
+            self.extractor, img0, self.extract_conf["preprocessing"]
+        )
+        pred = {
+            k: v.cpu().detach()[0].numpy() if isinstance(v, torch.Tensor) else v
+            for k, v in pred.items()
+        }
+        return pred
+
     @torch.inference_mode()
     def forward(
         self,