diff --git a/agentic_security/core/app.py b/agentic_security/core/app.py
index 3938ba8..3cb306e 100644
--- a/agentic_security/core/app.py
+++ b/agentic_security/core/app.py
@@ -4,10 +4,14 @@ from asyncio import Event, Queue
 from fastapi import FastAPI
 from fastapi.responses import ORJSONResponse
 
+from agentic_security.http_spec import LLMSpec
+
 tools_inbox: Queue = Queue()
 stop_event: Event = Event()
 current_run: str = {"spec": "", "id": ""}
-_secrets = {}
+_secrets: dict[str, str] = {}
+
+current_run: dict[str, int | LLMSpec] = {"spec": "", "id": ""}
 
 
 def create_app() -> FastAPI:
@@ -26,29 +30,29 @@ def get_stop_event() -> Event:
     return stop_event
 
 
-def get_current_run() -> str:
+def get_current_run() -> dict[str, int | LLMSpec]:
     """Get the current run id."""
     return current_run
 
 
-def set_current_run(spec):
+def set_current_run(spec: LLMSpec) -> dict[str, int | LLMSpec]:
     """Set the current run id."""
     current_run["id"] = hash(id(spec))
     current_run["spec"] = spec
     return current_run
 
 
-def get_secrets():
+def get_secrets() -> dict[str, str]:
     return _secrets
 
 
-def set_secrets(secrets):
+def set_secrets(secrets: dict[str, str]) -> dict[str, str]:
     _secrets.update(secrets)
     expand_secrets(_secrets)
     return _secrets
 
 
-def expand_secrets(secrets):
+def expand_secrets(secrets: dict[str, str]) -> None:
     for key in secrets:
         val = secrets[key]
         if val.startswith("$"):
diff --git a/agentic_security/misc/banner.py b/agentic_security/misc/banner.py
index dd41dac..f378a8f 100644
--- a/agentic_security/misc/banner.py
+++ b/agentic_security/misc/banner.py
@@ -1,3 +1,4 @@
+
 from pyfiglet import Figlet, FontNotFound
 from termcolor import colored
 
@@ -8,14 +9,14 @@ except ImportError:
 
 
 def generate_banner(
-    title="Agentic Security",
-    font="slant",
-    version="v2.1.0",
-    tagline="Proactive Threat Detection & Automated Security Protocols",
-    author="Developed by: [Security Team]",
-    website="Website: https://github.com/msoedov/agentic_security",
-    warning="",
-):
+    title: str = "Agentic Security",
+    font: str = "slant",
+    version: str = "v2.1.0",
+    tagline: str = "Proactive Threat Detection & Automated Security Protocols",
+    author: str = "Developed by: [Security Team]",
+    website: str = "Website: https://github.com/msoedov/agentic_security",
+    warning: str | None = "",  # Using Optional for warning since it might be None
+) -> str:
     """Generate a visually enhanced banner with dynamic width and borders."""
     # Define the text elements
 
diff --git a/agentic_security/report_chart.py b/agentic_security/report_chart.py
index c76e576..45387cb 100644
--- a/agentic_security/report_chart.py
+++ b/agentic_security/report_chart.py
@@ -7,8 +7,10 @@ import pandas as pd
 from matplotlib.cm import ScalarMappable
 from matplotlib.colors import LinearSegmentedColormap, Normalize
 
+from .primitives import Table
 
-def plot_security_report(table):
+
+def plot_security_report(table: Table) -> io.BytesIO:
     # Data preprocessing
     data = pd.DataFrame(table)
 
@@ -141,7 +143,7 @@ def plot_security_report(table):
     return buf
 
 
-def generate_identifiers(data):
+def generate_identifiers(data: pd.DataFrame) -> list[str]:
     data_length = len(data)
     alphabet = string.ascii_uppercase
     num_letters = len(alphabet)
diff --git a/agentic_security/routes/scan.py b/agentic_security/routes/scan.py
index 558bbb3..152bffd 100644
--- a/agentic_security/routes/scan.py
+++ b/agentic_security/routes/scan.py
@@ -1,4 +1,6 @@
+from collections.abc import Generator
 from datetime import datetime
+from typing import Any
 
 from fastapi import (
     APIRouter,
@@ -25,7 +27,7 @@ router = APIRouter()
 @router.post("/verify")
 async def verify(
     info: LLMInfo, secrets: InMemorySecrets = Depends(get_in_memory_secrets)
-):
+) -> dict[str, int | str | float]:
     spec = LLMSpec.from_string(info.spec)
     try:
         r = await spec.verify()
@@ -43,7 +45,7 @@ async def verify(
     )
 
 
-def streaming_response_generator(scan_parameters: Scan):
+def streaming_response_generator(scan_parameters: Scan) -> Generator[str, Any, None]:
     request_factory = LLMSpec.from_string(scan_parameters.llmSpec)
     set_current_run(request_factory)
 
@@ -64,7 +66,7 @@ async def scan(
     scan_parameters: Scan,
     background_tasks: BackgroundTasks,
     secrets: InMemorySecrets = Depends(get_in_memory_secrets),
-):
+) -> StreamingResponse:
     scan_parameters.with_secrets(secrets)
     return StreamingResponse(
         streaming_response_generator(scan_parameters), media_type="application/json"
@@ -72,7 +74,7 @@ async def scan(
 
 
 @router.post("/stop")
-async def stop_scan():
+async def stop_scan() -> dict[str, str]:
     get_stop_event().set()
     return {"status": "Scan stopped"}
 
@@ -86,7 +88,7 @@ async def scan_csv(
     maxBudget: int = Query(10_000),
     enableMultiStepAttack: bool = Query(False),
     secrets: InMemorySecrets = Depends(get_in_memory_secrets),
-):
+) -> StreamingResponse:
     # TODO: content dataset to fuzzer
     content = await file.read()  # noqa
     llm_spec = await llmSpec.read()
diff --git a/poetry.lock b/poetry.lock
index 3b0e30e..389d518 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -786,6 +786,20 @@ files = [
     {file = "distlib-0.3.8.tar.gz", hash = "sha256:1530ea13e350031b6312d8580ddb6b27a104275a31106523b8f123787f494f64"},
 ]
 
+[[package]]
+name = "execnet"
+version = "2.1.1"
+description = "execnet: rapid multi-Python deployment"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "execnet-2.1.1-py3-none-any.whl", hash = "sha256:26dee51f1b80cebd6d0ca8e74dd8745419761d3bef34163928cbebbdc4749fdc"},
+    {file = "execnet-2.1.1.tar.gz", hash = "sha256:5189b52c6121c24feae288166ab41b32549c7e2348652736540b9e6e7d4e72e3"},
+]
+
+[package.extras]
+testing = ["hatch", "pre-commit", "pytest", "tox"]
+
 [[package]]
 name = "executing"
 version = "2.2.0"
@@ -3244,6 +3258,26 @@ pytest = ">=6.2.5"
 [package.extras]
 dev = ["pre-commit", "pytest-asyncio", "tox"]
 
+[[package]]
+name = "pytest-xdist"
+version = "3.6.1"
+description = "pytest xdist plugin for distributed testing, most importantly across multiple CPUs"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "pytest_xdist-3.6.1-py3-none-any.whl", hash = "sha256:9ed4adfb68a016610848639bb7e02c9352d5d9f03d04809919e2dafc3be4cca7"},
+    {file = "pytest_xdist-3.6.1.tar.gz", hash = "sha256:ead156a4db231eec769737f57668ef58a2084a34b2e55c4a8fa20d861107300d"},
+]
+
+[package.dependencies]
+execnet = ">=2.1"
+pytest = ">=7.0.0"
+
+[package.extras]
+psutil = ["psutil (>=3.0)"]
+setproctitle = ["setproctitle"]
+testing = ["filelock"]
+
 [[package]]
 name = "python-dateutil"
 version = "2.9.0.post0"
@@ -4447,4 +4481,4 @@ propcache = ">=0.2.0"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "28a2b74bfafa9f93d14d2f8d1fcaffa340db212acce6469d6714d342203ad77f"
+content-hash = "35e03dba41d30cf6129a4a4f3107eca560f779205b21d3ffb2871eeffc5d5a64"
diff --git a/pyproject.toml b/pyproject.toml
index 9ca085c..14de7ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,6 +54,7 @@ pyfiglet = "^1.0.2"
 termcolor = "^2.4.0"
 
 # garak = { version = "*", optional = true }
+pytest-xdist = "3.6.1"
 
 
 [tool.poetry.group.dev.dependencies]
@@ -86,7 +87,7 @@ build-backend = "poetry.core.masonry.api"
 
 
 [tool.pytest.ini_options]
-addopts = "--durations=5 -m 'not slow'"
+addopts = "--durations=5 -m 'not slow' -n auto"
 asyncio_mode = "auto"
 asyncio_default_fixture_loop_scope = "function"
 markers = "slow: marks tests as slow"