An AI phone agent that answers your business line, books the job and texts you the details.
Callbook is a ready-made AI phone agent for service businesses. Nothing to build: fill in your business profile, forward your number, and every inbound call is answered 24/7, qualified, booked on your calendar and summarised by text. From $149/month with 300 AI minutes included, no contract.
What an AI phone agent is
An AI phone agent is software that answers phone calls and holds the conversation itself. It greets the caller, works out what they need, answers common questions, books an appointment or takes the details, and passes urgent calls to a person. “AI voice agent” and “AI receptionist” describe the same kind of product; the site's AI receptionist guide covers it under that name. Callbook is one, built specifically for service businesses.
Hear it before you buy
Call our line and the Callbook AI receptionist itself answers — ask it about plans, or book a free setup call. What you hear is exactly what your customers would get.
What Callbook's phone agent does on a call
Answers on the first ring, 24/7
Every inbound call is picked up in your business name, during the day while your team is on a job and after hours when voicemail used to take over.
Qualifies the caller
Asks the questions your trade needs: what is wrong, where, how urgent, residential or commercial, and whether the caller is the owner or a property manager.
Books into your real calendar
Checks the calendar you connect and offers only open slots, then confirms by text to the caller and to you. Google Calendar and Apple Calendar today.
Escalates by your rules
Emergencies can ring your on-call number, text you, or be transferred live. Routine calls are booked for the next open window.
Answers common questions
Hours, service area, the services you offer and any pricing you choose to publish, all from the business profile you set up.
Leaves a record
Transcript, summary and the caller’s details land on the customer record, so the job, estimate and invoice that follow start from the call.
AI voice agent: ready-made or build your own?
Searches for an “AI voice agent for small business” land on two very different things. Developer platforms give you the building blocks: you design the agent, write the prompts, connect the phone number, the calendar and the booking logic, and pay for usage. A ready-made agent like Callbook already has the call flows, the emergency rules, the calendar booking and the customer record; you fill in your business details and forward your number.
Build your own (voice-agent platform)
- You write and maintain the prompts and the conversation design.
- You connect telephony, calendar, text messaging and any records yourself.
- Suits teams with a developer and a use case the trades templates do not cover, including outbound calling.
Side by side: Callbook vs Retell AI, Callbook vs Bland AI, Callbook vs Synthflow.
Ready-made (Callbook)
- Call flows for 25 service industries, with the questions and emergency rules each trade needs.
- Calendar booking, text confirmations, customer records, estimates and invoices in the same product.
- Inbound calls only; follow-ups go out by text. English and Spanish.
- Live in about 5–10 minutes, priced per month with included minutes.
See everything included and the integrations (Google Calendar, Apple Calendar, QuickBooks; no field-service software yet).
Live in three steps
Fill in your business profile
Services, hours, service area, emergency rules and how you want calls handled. About 5–10 minutes.
Forward your number
Keep your existing number. Forward every call, only the ones you miss, or only after hours.
Listen, then go live
Call your own line and hear the agent. Adjust the greeting or the questions, then let it take real calls.
Full setup walkthrough: how it works · Pricing detail: what an AI receptionist costs
Tuned to your trade
The agent asks different questions for a burst pipe, a furnace that will not ignite and a refrigerator that stopped cooling. Pick your trade to see the call flow:
AI phone agent FAQs
- What is an AI phone agent?
- Software that answers phone calls and holds the conversation itself: it greets the caller, asks what they need, answers common questions, books an appointment or takes the details, and hands urgent calls to a person. "AI phone agent", "AI voice agent" and "AI receptionist" describe the same kind of product; the first two are the names developers and newer vendors use.
- Is Callbook an AI phone agent or an AI receptionist?
- Both. Callbook is an AI phone agent built for service businesses, and the rest of this site calls it an AI receptionist because that is what it replaces. It answers inbound calls 24/7, qualifies the caller, books into your calendar and texts you a summary, then keeps the customer, job, estimate and invoice in one place.
- Does it make outbound calls?
- No. Callbook answers inbound calls. Follow-ups, appointment confirmations and review requests go out by text message. It does not cold-call or run outbound campaigns.
- How is this different from a voice-agent platform like Vapi, Retell or Bland?
- Those are developer platforms: you design the agent, write the prompts, connect the phone number, the calendar and the booking logic, and pay for usage. Callbook is the finished product for the trades. The call flows, emergency rules, calendar booking, customer records and invoicing already exist; you fill in your business details and forward your number.
- What does an AI phone agent cost?
- Callbook voice plans start at $149/month with 300 AI minutes included, then $0.40 per extra minute, with no contract. Lite, at $19.99/month, covers missed-call text-back without voice minutes. Voice plans can start with a 7-day trial for $29.
- Can I hear it before I sign up?
- Yes. Call the live demo line on this page and describe a job, for example a burst pipe or a refrigerator that stopped cooling. The agent that answers is the same software that would answer your line.
- Will callers know they are talking to an AI?
- It sounds natural and professional, and it is honest: if a caller asks whether they are speaking with an AI, Callbook says so and carries on with the request.
Put an AI phone agent on your line this week.
From $149/month with 300 AI minutes included, then $0.40 per extra minute. No contract.