feat: add remove_prompt() and remove_resource() for parity with remove_tool()

Add methods to dynamically remove prompts and resources, matching the
existing remove_tool() functionality:

- Add PromptError exception class for prompt operation errors
- Add PromptManager.remove_prompt(name) - raises PromptError if not found
- Add ResourceManager.remove_resource(uri) - raises ResourceError if not found
- Add ResourceManager.remove_template(uri_template) - raises ResourceError
- Add MCPServer.remove_prompt(name) - thin wrapper to prompt manager
- Add MCPServer.remove_resource(uri) - thin wrapper to resource manager
- Add MCPServer.remove_resource_template(uri_template) - thin wrapper

This enables multi-tenant/multi-instance deployments where servers need
to dynamically manage their registered primitives.

Fixes #2331

Author: PR-Contributor

src/mcp/server/mcpserver/exceptions.py

@@ -13,6 +13,10 @@ class ResourceError(MCPServerError):
     """Error in resource operations."""
 
 
+class PromptError(MCPServerError):
+    """Error in prompt operations."""
+
+
 class ToolError(MCPServerError):
     """Error in tool operations."""
 

src/mcp/server/mcpserver/prompts/manager.py

@@ -4,6 +4,7 @@
 
 from typing import TYPE_CHECKING, Any
 
+from mcp.server.mcpserver.exceptions import PromptError
 from mcp.server.mcpserver.prompts.base import Message, Prompt
 from mcp.server.mcpserver.utilities.logging import get_logger
 
@@ -45,6 +46,19 @@ def add_prompt(
         self._prompts[prompt.name] = prompt
         return prompt
 
+    def remove_prompt(self, name: str) -> None:
+        """Remove a prompt by name.
+
+        Args:
+            name: The name of the prompt to remove
+
+        Raises:
+            PromptError: If the prompt does not exist
+        """
+        if name not in self._prompts:
+            raise PromptError(f"Unknown prompt: {name}")
+        del self._prompts[name]
+
     async def render_prompt(
         self,
         name: str,

src/mcp/server/mcpserver/resources/resource_manager.py

@@ -7,6 +7,7 @@
 
 from pydantic import AnyUrl
 
+from mcp.server.mcpserver.exceptions import ResourceError
 from mcp.server.mcpserver.resources.base import Resource
 from mcp.server.mcpserver.resources.templates import ResourceTemplate
 from mcp.server.mcpserver.utilities.logging import get_logger
@@ -108,3 +109,29 @@ def list_templates(self) -> list[ResourceTemplate]:
         """List all registered templates."""
         logger.debug("Listing templates", extra={"count": len(self._templates)})
         return list(self._templates.values())
+
+    def remove_resource(self, uri: str) -> None:
+        """Remove a resource by URI.
+
+        Args:
+            uri: The URI of the resource to remove
+
+        Raises:
+            ResourceError: If the resource does not exist
+        """
+        if uri not in self._resources:
+            raise ResourceError(f"Unknown resource: {uri}")
+        del self._resources[uri]
+
+    def remove_template(self, uri_template: str) -> None:
+        """Remove a resource template by URI template.
+
+        Args:
+            uri_template: The URI template of the template to remove
+
+        Raises:
+            ResourceError: If the template does not exist
+        """
+        if uri_template not in self._templates:
+            raise ResourceError(f"Unknown template: {uri_template}")
+        del self._templates[uri_template]

src/mcp/server/mcpserver/server.py

@@ -500,6 +500,39 @@ def remove_tool(self, name: str) -> None:
         """
         self._tool_manager.remove_tool(name)
 
+    def remove_prompt(self, name: str) -> None:
+        """Remove a prompt from the server by name.
+
+        Args:
+            name: The name of the prompt to remove
+
+        Raises:
+            PromptError: If the prompt does not exist
+        """
+        self._prompt_manager.remove_prompt(name)
+
+    def remove_resource(self, uri: str) -> None:
+        """Remove a resource from the server by URI.
+
+        Args:
+            uri: The URI of the resource to remove
+
+        Raises:
+            ResourceError: If the resource does not exist
+        """
+        self._resource_manager.remove_resource(uri)
+
+    def remove_resource_template(self, uri_template: str) -> None:
+        """Remove a resource template from the server by URI template.
+
+        Args:
+            uri_template: The URI template of the template to remove
+
+        Raises:
+            ResourceError: If the template does not exist
+        """
+        self._resource_manager.remove_template(uri_template)
+
     def tool(
         self,
         name: str | None = None,