A Cloudflare GQL API request to get health checks RTT (round-trip time), grouped by region.

rlimit-com-healthcheck-latency.js

// GQL API docs => https://developers.cloudflare.com/analytics/graphql-api/
// tldr; => POST https://api.cloudflare.com/client/v4/graphql

const requestBody = {
  query: `
      query RequestsAndDataTransferByHostname($zoneTag: string, $filter: filter) {
          viewer {
              zones(filter: {zoneTag: $zoneTag}) {
                  healthCheckEventsAdaptiveGroups(limit: 10000, filter: $filter) {
                      dimensions {
                          healthCheckName
                          datetimeFiveMinutes
                          region
                      }
                      avg {
                        rttMs
                      }
                  }
              }
          }
      }`,
  variables: {
    zoneTag, // Health Checks' Cloudflare Zone ID
    filter: {
      datetime_geq: new Date(Date.now() - 60 * 60 * 24 * 1000).toISOString(),
      rttMs_lt: 1000,
      OR: [
        { healthCheckName: "rlimit-com-cf-proxied" },
        { healthCheckName: "rlimit-com-direct" },
      ],
    },
  },
};