Rootly MCP server

Instructions

{
  "key": "value"
}

Implementation Reference

• src/rootly_mcp_server/server.py:121-172 (registration)

  Registers the /functionalities endpoint by including it in DEFAULT_ALLOWED_PATHS, enabling the dynamic generation of the listFunctionalities tool.

  DEFAULT_ALLOWED_PATHS = [
      "/incidents/{incident_id}/alerts",
      "/alerts",
      "/alerts/{alert_id}",
      "/severities",
      "/severities/{severity_id}",
      "/teams",
      "/teams/{team_id}",
      "/services",
      "/services/{service_id}",
      "/functionalities",
      "/functionalities/{functionality_id}",
      # Incident types
      "/incident_types",
      "/incident_types/{incident_type_id}",
      # Action items (all, by id, by incident)
      "/incident_action_items",
      "/incident_action_items/{incident_action_item_id}",
      "/incidents/{incident_id}/action_items",
      # Workflows
      "/workflows",
      "/workflows/{workflow_id}",
      # Workflow runs
      "/workflow_runs",
      "/workflow_runs/{workflow_run_id}",
      # Environments
      "/environments",
      "/environments/{environment_id}",
      # Users
      "/users",
      "/users/{user_id}",
      "/users/me",
      # Status pages
      "/status_pages",
      "/status_pages/{status_page_id}",
      # On-call schedules and shifts
      "/schedules",
      "/schedules/{schedule_id}",
      "/schedules/{schedule_id}/shifts",
      "/shifts",
      "/schedule_rotations/{schedule_rotation_id}",
      "/schedule_rotations/{schedule_rotation_id}/schedule_rotation_users",
      "/schedule_rotations/{schedule_rotation_id}/schedule_rotation_active_days",
      # On-call overrides
      "/schedules/{schedule_id}/override_shifts",
      "/override_shifts/{override_shift_id}",
      # On-call shadows and roles
      "/schedules/{schedule_id}/on_call_shadows",
      "/on_call_shadows/{on_call_shadow_id}",
      "/on_call_roles",
      "/on_call_roles/{on_call_role_id}",
  ]

• src/rootly_mcp_server/server.py:337-344 (registration)

  Main registration point where FastMCP.from_openapi generates all dynamic tools from the filtered OpenAPI spec, including the listFunctionalities tool for GET /v1/functionalities.

  # By default, all routes become tools which is what we want
  mcp = FastMCP.from_openapi(
      openapi_spec=filtered_spec,
      client=http_client.client,
      name=name,
      timeout=30.0,
      tags={"rootly", "incident-management"},
  )

• src/rootly_mcp_server/server.py:227-234 (handler)

  The core request handler in AuthenticatedHTTPXClient that proxies all API calls for generated tools, including listFunctionalities (proxies GET /v1/functionalities).

  async def request(self, method: str, url: str, **kwargs):
      """Override request to transform parameters."""
      # Transform query parameters
      if 'params' in kwargs:
          kwargs['params'] = self._transform_params(kwargs['params'])
  
      # Call the underlying client's request method and let it handle everything
      return await self.client.request(method, url, **kwargs)

• src/rootly_mcp_server/utils.py:45-105 (helper)

  Helper that sanitizes OpenAPI parameter names for MCP compliance; used for all dynamic tools including listFunctionalities.

  def sanitize_parameters_in_spec(spec: Dict[str, Any]) -> Dict[str, str]:
      """
      Sanitize all parameter names in an OpenAPI specification.
      
      This function modifies the spec in-place and builds a mapping 
      of sanitized names to original names.
      
      Args:
          spec: OpenAPI specification dictionary
          
      Returns:
          Dictionary mapping sanitized names to original names
      """
      parameter_mapping = {}
      
      # Sanitize parameters in paths
      if "paths" in spec:
          for path, path_item in spec["paths"].items():
              if not isinstance(path_item, dict):
                  continue
                  
              # Sanitize path-level parameters
              if "parameters" in path_item:
                  for param in path_item["parameters"]:
                      if "name" in param:
                          original_name = param["name"]
                          sanitized_name = sanitize_parameter_name(original_name)
                          if sanitized_name != original_name:
                              logger.debug(f"Sanitized path-level parameter: '{original_name}' -> '{sanitized_name}'")
                              param["name"] = sanitized_name
                              parameter_mapping[sanitized_name] = original_name
              
              # Sanitize operation-level parameters
              for method, operation in path_item.items():
                  if method.lower() not in ["get", "post", "put", "delete", "patch", "options", "head", "trace"]:
                      continue
                  if not isinstance(operation, dict):
                      continue
                      
                  if "parameters" in operation:
                      for param in operation["parameters"]:
                          if "name" in param:
                              original_name = param["name"]
                              sanitized_name = sanitize_parameter_name(original_name)
                              if sanitized_name != original_name:
                                  logger.debug(f"Sanitized operation parameter: '{original_name}' -> '{sanitized_name}'")
                                  param["name"] = sanitized_name
                                  parameter_mapping[sanitized_name] = original_name
      
      # Sanitize parameters in components (OpenAPI 3.0)
      if "components" in spec and "parameters" in spec["components"]:
          for param_name, param_def in spec["components"]["parameters"].items():
              if isinstance(param_def, dict) and "name" in param_def:
                  original_name = param_def["name"]
                  sanitized_name = sanitize_parameter_name(original_name)
                  if sanitized_name != original_name:
                      logger.debug(f"Sanitized component parameter: '{original_name}' -> '{sanitized_name}'")
                      param_def["name"] = sanitized_name
                      parameter_mapping[sanitized_name] = original_name
      
      return parameter_mapping

• src/rootly_mcp_server/server.py:319-321 (helper)

  Calls sanitize_parameters_in_spec on the filtered spec before tool generation, ensuring listFunctionalities parameters are MCP-compliant.

  parameter_mapping = sanitize_parameters_in_spec(filtered_spec)
  logger.info(f"Sanitized parameter names for MCP compatibility (mapped {len(parameter_mapping)} parameters)")