# AI Lead Strategies > AI Lead Strategies LLC (Exton, Pennsylvania, founded 2024) builds NEXUS OS, the engine behind Sirfus (https://sirfus.com). The ask is the lead: a person says what they need and where; NEXUS OS picks one of 114 categories, finds and verifies one local business that is real, active and reachable, and connects the two by text. One request goes to one pro, never a list. Free for the person asking. The pro lists free, the first three confirmed jobs are free, then a flat fee per job charged only when the customer confirms it is done. No directory, no bidding, no pay-to-rank. Company site: https://aileadstrategies.com/ Product: Sirfus, https://sirfus.com/ (its own summary: https://sirfus.com/llms.txt, full detail: https://sirfus.com/llms-full.txt, descriptor: https://sirfus.com/.well-known/sirfus.json) Full copy of this site: https://aileadstrategies.com/llms-full.txt ## In one line each - AI Lead Strategies LLC: the company. Exton, PA. support@aileadstrategies.com, (610) 345-7906. - NEXUS OS: the matching engine. Listens for the ask, verifies the business, sends one text, confirms the job, charges only then. - Sirfus: the product people use. "Sirfus. Where the ask meets the answer." Homeowners: "Say what you need. One real pro answers." Vendors: "Be found by the people already looking for you." ## What NEXUS OS does 1. Listen: reads a request in plain words (sirfus.com, a partner's embedded form, a text, an AI assistant, the Demand API), picks one of 114 categories and the place. 2. Find: the supply builder finds businesses in that category and city ahead of demand and verifies three things: real (live website or operating listing), active (recent reviews or recent work), reachable (a phone or email that verifies). 3. Match: one request goes to one verified local pro by text. The pro replies YES with the job code; the customer is connected. Nobody else gets the lead. 4. Confirm: the pro pays a flat fee per job only when the customer confirms it is done. The first three confirmed jobs are free. Leads that never became jobs cost nothing. ## What Sirfus never does - Charge the person asking. - Send one request to more than one pro at a time. - Charge a pro for a contact who was not a real, consenting person. - Rank or favor pros by how much they pay. - Publish a browsable directory of pros. - Buy consumer ads for demand it has no verified pro to serve. ## Who it is for - Homeowners and renters: https://sirfus.com/local.html (free, no account) - Businesses that need a vendor: https://sirfus.com/business.html - Vendors of any kind (trades, professionals, creatives, shops; 114 categories in 15 groups): list free at https://sirfus.com/pro/ (English and Spanish, by phone); manage the listing at https://sirfus.com/pro/me/ - Software, agencies and AI assistants: keyed Demand API (OpenAPI https://sirfus.com/api/sirfus/v1/openapi.json), an MCP server, the embed widget https://sirfus.com/embed/. Keys: hello@sirfus.com ## Coverage 114 categories in 15 groups (home services, outdoor and property, cleaning, auto and transport, health and wellness, family and pet care, professional services, business services, technology, creative and media, events and food, education and coaching, real estate and moving, local shops and repair, legal and finance). City pages for 13 home-service trades (roofing, HVAC, plumbing, electrical, house cleaning, landscaping, handyman, pest control, painting, pressure washing, flooring, fencing, commercial cleaning) across 124 metros in 13 states: Texas, Arizona, California, Florida, Georgia, North Carolina, Illinois, Colorado, Washington, Pennsylvania, Delaware, New Jersey, New York. Requests from any US location are accepted on the main form. ## Built with NEXUS OS is built with Claude by Anthropic. Business fit is judged with Jev by TypeSafe; web discovery uses Firecrawl; texts go through Twilio; every email is verified with ZeroBounce before a send; fees are charged through Stripe only on a confirmed job. Sirfus is discoverable by Claude, ChatGPT, Gemini, Perplexity and Copilot through llms.txt, structured data and an MCP server. These names describe compatibility, not endorsement. ## Former product names UltraLead (ultralead.ai) is the NEXUS OS plan for businesses: a 7-day free trial at https://aileadstrategies.com/signup, then the NEXUS OS dashboard. LeadSite.AI (leadsite.ai), LeadSite.IO (leadsite.io), ClientContact.IO (clientcontact.io) and VideoSite.AI (videosite.ai) were feature areas of NEXUS OS sold between 2024 and 2026; those domains now point to Sirfus. Existing NEXUS OS customers sign in at https://aileadstrategies.com/login.