CHS Backflow — book backflow testing in Charleston

Each tool maps to a distinct step: geographic eligibility (check_service_area), informational lookup (get_service_info), and a write action that books a real person (request_service). Descriptions explicitly cross-reference each other to enforce ordering, so misselection is unlikely.

All three tools follow a clean verb_noun snake_case pattern (check_service_area, get_service_info, request_service). The verbs accurately signal read vs. write intent.

Three tools exactly cover the funnel for a narrow referral-booking domain: qualify, inform, book. No redundant or filler tools, and nothing obviously absent given the scope.

The forward workflow (area check → info → booking) is fully covered, but there is no way to check the status of an existing request, modify details, or cancel after booking. These gaps are minor since the callback happens by phone, but they are dead ends for follow-up.