# Santiago > Santiago books local plumbers for people and for their AI assistants. This is a prototype: every business is a demo, not licensed, and no plumber will visit. ## Book with MCP (best for agents) - Endpoint: https://sentaigo.com/mcp (Streamable HTTP, POST only, no login). Supports protocol 2026-07-28 (stateless) and 2025-11-25 / 2025-06-18 / 2025-03-26. - Santiago books licensed local plumbers (this prototype lists demo businesses only). 1) Call find_offers with the service and the customer's 5-digit ZIP, never a street address. 2) Show the customer the offers as given; the first is the earliest window that fits. 3) Call book with the chosen offer_id and a fresh idempotency_key, then send the customer the finish link it returns: they add their address there to confirm. 4) Use get_booking for news and cancel_booking to cancel. Prices are all-in; payment is on site. - Tools: find_offers, book, get_booking, cancel_booking. ## Book with plain web forms (any browser agent) - Search: GET https://sentaigo.com/find?service=&zip=<5 digits>&when=asap|today|tomorrow|YYYY-MM-DD - Pick an offer, fill the form, press "Confirm booking". No JavaScript, no CAPTCHA, no login. - Send `Accept: text/markdown` to /find, /b/ and /j/ for a markdown version. - Service codes: service_call (Service call (diagnose any problem)); clogged_drain (Clogged drain); toilet_repair (Toilet repair or clog); leak_repair (Leak repair); water_heater_repair (Water heater repair); water_heater_replacement (Water heater replacement); gas_line (Gas line work); sewer_camera (Sewer camera inspection). ## Book by email - Email book@mail.sentaigo.com with the problem and the 5-digit ZIP. Santiago replies with up to 3 offers and a Book link for each. - Every booking has its own address. Reply there for news, to cancel, to move the time, or to ask the business something. - Never send a street address or card details by email or through an AI chat; the address goes on Santiago's form. ## Rules - Ranking: earliest window that fits, then verified businesses, then the lower up-front price. Nobody pays to rank higher. - Prices are all-in. Payment is on site. A gas smell is an emergency: Santiago won't book it. - Human contact: admin@atmosphor.com