This tool will allow you to create Key Requests:

Create a file formatted (with a header row).
Seperator must be a pipe | and the header row names must match what is shown below.
entitySelector field can be any valid Dynatrace entity selector.request_name (one per line) must match what is shown in the Dynatrace UI. entitySelector|request_name
type(SERVICE),tag(owned_by:owner@me.com)|/pageone.html
type(SERVICE),tag(application:frontend),tag(environment:production)|/pagetwo.html

You will need an API token with v2 Read Entities and v2 Write Settings permissions.
You must run the docker command from the same directory as your CSV file.
dt_url, dt_api_token and are mandatory parameters.
dt_filename and dt_logging are optional parameters. If dt_filename is not set, defaults to input.csv.
dt_logging is used for debug purposes to add additional logging. set dt_logging=yes. Defaults to off (no additional logging).
docker run --rm ^
-v %cd%:/app ^
--env dt_url=https://abc12345.live.dynatrace.com ^
--env dt_api_token=dt0c01.***** ^
--env dt_filename=input.csv ^
--env dt_logging=yes ^
adamgardnerdt/key-request-creator:v0.1