diff --git a/application/parser/file/openapi3_parser.py b/application/parser/file/openapi3_parser.py
new file mode 100644
index 0000000..3c5082f
--- /dev/null
+++ b/application/parser/file/openapi3_parser.py
@@ -0,0 +1,51 @@
+from urllib.parse import urlparse
+
+from openapi_parser import parse
+
+try:
+    from application.parser.file.base_parser import BaseParser
+except ModuleNotFoundError:
+    from base_parser import BaseParser
+
+
+class OpenAPI3Parser(BaseParser):
+    def init_parser(self) -> None:
+        return super().init_parser()
+
+    def get_base_urls(self, urls):
+        base_urls = []
+        for i in urls:
+            parsed_url = urlparse(i)
+            base_url = parsed_url.scheme + "://" + parsed_url.netloc
+            if base_url not in base_urls:
+                base_urls.append(base_url)
+        return base_urls
+
+    def get_info_from_paths(self, path):
+        info = ""
+        if path.operations:
+            for operation in path.operations:
+                info += (
+                    f"\n{operation.method.value}="
+                    f"{operation.responses[0].description}"
+                )
+        return info
+
+    def parse_file(self, file_path):
+        data = parse(file_path)
+        results = ""
+        base_urls = self.get_base_urls(link.url for link in data.servers)
+        base_urls = ",".join([base_url for base_url in base_urls])
+        results += f"Base URL:{base_urls}\n"
+        i = 1
+        for path in data.paths:
+            info = self.get_info_from_paths(path)
+            results += (
+                f"Path{i}: {path.url}\n"
+                f"description: {path.description}\n"
+                f"parameters: {path.parameters}\nmethods: {info}\n"
+            )
+            i += 1
+        with open("results.txt", "w") as f:
+            f.write(results)
+        return results
diff --git a/application/requirements.txt b/application/requirements.txt
index 9c60e42..693e628 100644
--- a/application/requirements.txt
+++ b/application/requirements.txt
@@ -57,6 +57,7 @@ nltk==3.8.1
 numcodecs==0.11.0
 numpy==1.24.2
 openai==0.27.8
+openapi3-parser==1.1.14
 packaging==23.0
 pathos==0.3.0
 Pillow==10.0.1
diff --git a/scripts/parser/file/openapi3_parser.py b/scripts/parser/file/openapi3_parser.py
new file mode 100644
index 0000000..4fd1ffa
--- /dev/null
+++ b/scripts/parser/file/openapi3_parser.py
@@ -0,0 +1,51 @@
+from urllib.parse import urlparse
+
+from openapi_parser import parse
+
+try:
+    from scripts.parser.file.base_parser import BaseParser
+except ModuleNotFoundError:
+    from base_parser import BaseParser
+
+
+class OpenAPI3Parser(BaseParser):
+    def init_parser(self) -> None:
+        return super().init_parser()
+
+    def get_base_urls(self, urls):
+        base_urls = []
+        for i in urls:
+            parsed_url = urlparse(i)
+            base_url = parsed_url.scheme + "://" + parsed_url.netloc
+            if base_url not in base_urls:
+                base_urls.append(base_url)
+        return base_urls
+
+    def get_info_from_paths(self, path):
+        info = ""
+        if path.operations:
+            for operation in path.operations:
+                info += (
+                    f"\n{operation.method.value}="
+                    f"{operation.responses[0].description}"
+                )
+        return info
+
+    def parse_file(self, file_path):
+        data = parse(file_path)
+        results = ""
+        base_urls = self.get_base_urls(link.url for link in data.servers)
+        base_urls = ",".join([base_url for base_url in base_urls])
+        results += f"Base URL:{base_urls}\n"
+        i = 1
+        for path in data.paths:
+            info = self.get_info_from_paths(path)
+            results += (
+                f"Path{i}: {path.url}\n"
+                f"description: {path.description}\n"
+                f"parameters: {path.parameters}\nmethods: {info}\n"
+            )
+            i += 1
+        with open("results.txt", "w") as f:
+            f.write(results)
+        return results
diff --git a/scripts/requirements.txt b/scripts/requirements.txt
index 5ead1d0..dc0f7e9 100644
--- a/scripts/requirements.txt
+++ b/scripts/requirements.txt
@@ -61,6 +61,7 @@ nltk==3.8.1
 numcodecs==0.11.0
 numpy==1.25.2
 openai==0.27.8
+openapi3-parser==1.1.14
 openpyxl==3.1.2
 packaging==23.1
 pandas==2.0.3
diff --git a/tests/test_openapi3.yaml b/tests/test_openapi3.yaml
new file mode 100644
index 0000000..a015e14
--- /dev/null
+++ b/tests/test_openapi3.yaml
@@ -0,0 +1,116 @@
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+  - url: https://api.example.com/v1/resource
+  - url: https://api.example.com/v1/another/resource
+  - url: https://api.example.com/v1/some/endpoint
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            maximum: 100
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:    
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      type: object
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      maxItems: 100
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      type: object
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
\ No newline at end of file
diff --git a/tests/test_openapi3parser.py b/tests/test_openapi3parser.py
new file mode 100644
index 0000000..1ce01ef
--- /dev/null
+++ b/tests/test_openapi3parser.py
@@ -0,0 +1,50 @@
+import pytest
+from openapi_parser import parse
+from application.parser.file.openapi3_parser import OpenAPI3Parser
+
+
+@pytest.mark.parametrize(
+    "urls, expected_base_urls",
+    [
+        (
+            [
+                "http://petstore.swagger.io/v1",
+                "https://api.example.com/v1/resource",
+                "https://api.example.com/v1/another/resource",
+                "https://api.example.com/v1/some/endpoint",
+            ],
+            ["http://petstore.swagger.io", "https://api.example.com"],
+        ),
+    ],
+)
+def test_get_base_urls(urls, expected_base_urls):
+    assert OpenAPI3Parser().get_base_urls(urls) == expected_base_urls
+
+
+def test_get_info_from_paths():
+    file_path = "tests/test_openapi3.yaml"
+    data = parse(file_path)
+    path = data.paths[1]
+    assert (
+        OpenAPI3Parser().get_info_from_paths(path)
+        == "\nget=Expected response to a valid request"
+    )
+
+
+def test_parse_file():
+    file_path = "tests/test_openapi3.yaml"
+    results_expected = (
+        "Base URL:http://petstore.swagger.io,https://api.example.com\nPath1: "
+        + "/pets\ndescription: None\nparameters: []\nmethods: \n"
+        + "get=A paged array of pets\npost=Null "
+        + "response\nPath2: /pets/{petId}\ndescription: None\n"
+        + "parameters: []\nmethods: "
+        + "\nget=Expected response to a valid request\n"
+    )
+    openapi_parser_test = OpenAPI3Parser()
+    results = openapi_parser_test.parse_file(file_path)
+    assert results == results_expected
+
+
+if __name__ == "__main__":
+    pytest.main()