set_rate_limit_per_key.rb

# Token (SENTRY_AUTH_TOKEN) must have appropriate priveleges (i.e. project:write)
# Usage: SENTRY_AUTH_TOKEN=<YOUR_SENTRY_AUTH_TOKEN> SENTRY_ORG=<YOUR_SENTRY_ORG> ruby 

require 'rest-client'
require 'json'

organization_slug = ENV['SENTRY_ORG']

res = RestClient.get("https://sentry.io/api/0/organizations/#{organization_slug}/projects/",
    headers={
        "Authorization": "Bearer #{ENV['SENTRY_AUTH_TOKEN']}" 
    })
projects = JSON.parse(res.body)

for project in projects
    project_slug =  project['slug']

    res = RestClient.get("https://sentry.io/api/0/projects/#{organization_slug}/#{project_slug}/keys/",
    headers={
        "Authorization": "Bearer #{ENV['SENTRY_AUTH_TOKEN']}" 
    })
    keys = JSON.parse(res.body)

    for key in keys
        key_id = key['id']
        name = key['name']
        puts "name is : #{name}"
        puts "https://sentry.io/api/0/projects/#{organization_slug}/#{project_slug}/keys/#{key_id}/"

        # update rate limit (setting to 1500 events per minute in this example)
        res = RestClient.put("https://sentry.io/api/0/projects/#{organization_slug}/#{project_slug}/keys/#{key_id}/", { name: name, rateLimit: { window: "60", count: 1500}}.to_json, headers={
            "Authorization": "Bearer #{ENV['SENTRY_AUTH_TOKEN']}",
            "Content-Type": "application/json"
        })
    end
end