diff --git a/src/docgen/models/endpoint.py b/src/docgen/models/endpoint.py
new file mode 100644
index 0000000..b7c5af8
--- /dev/null
+++ b/src/docgen/models/endpoint.py
@@ -0,0 +1,85 @@
+"""Endpoint models for API documentation."""
+
+from enum import Enum
+from typing import Optional, Any
+from pydantic import BaseModel, Field
+
+
+class HTTPMethod(str, Enum):
+    """HTTP methods supported by endpoints."""
+
+    GET = "GET"
+    POST = "POST"
+    PUT = "PUT"
+    PATCH = "PATCH"
+    DELETE = "DELETE"
+    OPTIONS = "OPTIONS"
+    HEAD = "HEAD"
+
+
+class ParameterIn(str, Enum):
+    """Parameter location."""
+
+    PATH = "path"
+    QUERY = "query"
+    HEADER = "header"
+    COOKIE = "cookie"
+    BODY = "body"
+
+
+class Parameter(BaseModel):
+    """API parameter model."""
+
+    name: str
+    type: str = "string"
+    required: bool = False
+    description: str = ""
+    location: ParameterIn = ParameterIn.QUERY
+    default: Optional[str] = None
+    example: Optional[str] = None
+
+
+class Response(BaseModel):
+    """API response model."""
+
+    status_code: int = 200
+    description: str = ""
+    content_type: str = "application/json"
+    example: Optional[dict[str, Any]] = None
+    response_schema: Optional[str] = Field(None, alias="schema")
+
+
+class Endpoint(BaseModel):
+    """API endpoint model."""
+
+    path: str
+    method: HTTPMethod
+    summary: str = ""
+    description: str = ""
+    tags: list[str] = Field(default_factory=list)
+    parameters: list[Parameter] = Field(default_factory=list)
+    request_body: Optional[Parameter] = None
+    responses: list[Response] = Field(default_factory=list)
+    deprecated: bool = False
+    operation_id: Optional[str] = None
+    security: list[str] = Field(default_factory=list)
+    file_path: Optional[str] = None
+    line_number: Optional[int] = None
+
+    def get_full_path(self, base_path: str = "") -> str:
+        """Get the full endpoint path with base path."""
+        full = f"{base_path.rstrip('/')}/{self.path.lstrip('/')}"
+        return full
+
+    def get_method_color(self) -> str:
+        """Get color for HTTP method badge."""
+        colors = {
+            HTTPMethod.GET: "#61affe",
+            HTTPMethod.POST: "#49cc90",
+            HTTPMethod.PUT: "#fca130",
+            HTTPMethod.PATCH: "#50e3c2",
+            HTTPMethod.DELETE: "#f93e3e",
+            HTTPMethod.OPTIONS: "#0d5aa7",
+            HTTPMethod.HEAD: "#9012fe",
+        }
+        return colors.get(self.method, "#999999")