AI agents that answer your leads in under 5 seconds and book them into your CRM
I build AI agents for WhatsApp, website chat and phone calls, connected to the CRM you already use. They reply in seconds, at any hour, and hand your team only the leads worth their time.
- 37 AI agents built since 2021
- Replies in under 5 seconds
- 70% of conversations handled without a human
- 5.0 on Google · 13 reviews
AI agent development means building software that holds real conversations with your leads and customers, then takes action: it qualifies, answers technical questions, books appointments and updates your CRM. Unlike a scripted chatbot, it understands questions it was never programmed for. I’ve built 37 of them since 2021, for small and mid-size businesses.
What my agents do
- Qualify leads. Ask the questions your sales team would ask, check the answers against your criteria and pass only qualified leads forward, with the full conversation attached.
- Answer technical questions. Trained on your products, services and documents, so customers get accurate answers instead of “someone will get back to you.”
- Book appointments. Straight into your calendar, with confirmations and reminders.
- Pick up the phone. Voice agents answer calls your team misses, including nights and weekends.
- Update your CRM. Every conversation lands on the right contact record, with tags and pipeline stage.
WhatsApp, website chat, phone and your own team
| Channel | Typical use | Page |
|---|---|---|
| Lead qualification and support for businesses whose customers live on WhatsApp | WhatsApp AI agent | |
| Website chat | Answering visitors and capturing leads while they’re on the site | · |
| Phone (voice) | Answering calls, after-hours coverage, booking | · |
| Internal tools | Bots that help your own team, like sales reps with technical questions | · |
GoHighLevel, n8n or custom code, depending on the job
The right tool depends on how complex the job is and how much it needs to scale:
I’ve connected agents to GoHighLevel, Salesforce, HubSpot, Kajabi and systeme.io. On WhatsApp, I only use Meta’s official API.
- Inside GoHighLevel, with its native AI, when your CRM is already there and the job is answering, qualifying and booking. Fastest to launch and easiest for your team to manage.
- With n8n and models like Claude or GPT, when the agent needs to reach several systems, follow complex logic or work outside the CRM.
- With custom code, when the project needs full control, special integrations or higher volume.
Agents that handle 70% of conversations without a human
WhatsApp agents for a B2B manufacturer
Replies in under 5 seconds, 70% of conversations handled without a human, and 83% of the leads passed to sales arrive qualified.
How the WhatsApp agent worksVoice agent for a US service business
Selling five-figure packages. In six months, it answered about 67 calls a month and resolved 57% of them without the team. It picked up more than 100 calls after hours that would have gone to voicemail, booked 32 appointments, and 19 of those became five-figure sales.
My own WhatsApp agent
It has handled more than 100 conversations and qualified about 47 leads for my business.
The calls nobody is there to answer are the ones a voice agent is for. Nights, weekends and the hour your team is in a meeting are when most of those calls arrive.
How a project runs
Map the conversations.
What people ask, what qualifies a lead, when a human should step in.
Write and train the agent
on your services, documents and rules.
Connect it
to your CRM, calendar and channels.
Test it
with fake leads and tricky questions. I try to break it before a real customer can.
Launch and watch closely for 30 days,
adjusting answers and rules from real conversations.
A second 30-day review
to fine-tune once the volume settles.
What it costs
You get a fixed quote before I start. Usage costs (AI model, WhatsApp or phone minutes) are paid directly to each platform.
What an AI agent costs for a small business comes down to how many systems it has to touch, not to how many messages it answers.
- Simple agent, inside GoHighLevel.Uses the CRM’s own AI. The cheapest way in, and often enough.
- Medium complexity, around US$2,000.About six weeks, including the two months of monitoring after launch.
- Several integrations or custom code.More, and quoted after I see which systems it has to reach.
Who doesn’t need an agent yet
If you get five leads a month and answer them in minutes, you don’t need an agent yet. Agents pay off when volume is high, replies are slow, leads arrive after hours or your team spends hours repeating the same answers.
When a WhatsApp AI agent makes sense is mostly a volume question: it starts paying off when answering every lead by hand costs you the ones you never get to.
Frequently asked questions
What’s the difference between a chatbot and an AI agent?
A chatbot follows a fixed script and breaks when someone goes off it. An AI agent understands the question, answers in its own words and takes actions like booking or updating the CRM.
Will the agent pretend to be a person?
No. I set agents up to say they’re an assistant. Hiding it hurts trust when people find out, and they usually do.
What happens when the agent doesn’t know the answer?
It hands the conversation to your team, with the full context, instead of guessing.
Can it work with my CRM?
Very likely. I’ve connected agents to GoHighLevel, Salesforce, HubSpot, Kajabi and systeme.io, and anything with an API can be connected.
How long does it take?
About six weeks for a medium-complexity agent, including testing. Simple agents inside GoHighLevel can launch faster.
Who owns the agent?
You do. It lives in your accounts, and you get documentation of how it works.
What does it cost to run each month?
It depends on volume: the AI model, WhatsApp messages and phone minutes are billed by each platform. I estimate it with you before launch.
Do you work on US hours?
Yes. I’m in Brazil, 1 to 2 hours ahead of US Eastern Time.
What clients say
Working with Lucas on my website was a really great experience. He’s a fantastic listener—patient, thoughtful, and was genuinely committed to understanding what I wanted to convey. I came in with ideas and pieces of my story, and Lucas brought the structure and creativity needed to pull it all together. His insights and suggestions helped turn my vision into a website that truly reflects who I am and what I do. I’m so grateful for his partnership and highly recommend him to anyone looking to bring clarity and impact to their online presence.
Jackie VickBusiness Guide · Jackie Vick Growth PartnersWe've partnered with Lucas on numerous development projects, and it's not an overstatement to say he's become an invaluable extension of our team. Lucas consistently delivers top-notch work, combining exceptional coding skills with a keen eye for design. What truly sets Lucas apart is his problem-solving ability. We've thrown some complex challenges his way, and he always comes through with elegant, effective solutions. His technical expertise is matched only by his dedication to understanding our needs and exceeding our expectations. We have complete confidence in Lucas's ability to tackle any project we throw at him. We wholeheartedly recommend Lucas to anyone seeking a highly skilled, reliable, and results-oriented developer.
Tony JuaysOwner · First IgniteWorking with Lucas completely shifted how I see the value of a website. Lucas not only built a digital presence that better reflects my credibility, but also helped me uncover and communicate key success metrics I had overlooked. I walked away with far more confidence in my positioning.
David LeavittCEO and Managing Director · CxO Advisory, LLCLucas is exceptional at helping me elevate my digital presence. He listens carefully, clarifies expectations, and communicates with both clarity and empathy. His design skills go beyond aesthetics, they’re strategic, helping me stand out with authority and attract the right clients. I highly recommend him to any business who wants to stop blending in and start leading with confidence.
Breandan FilbertManaging Partner · SalezworksLucas Nobre has been an exceptional asset to my projects and my clients projects. His punctuality and reliability in delivering work on time have been impeccable. Lucas always brings fresh, creative ideas that elevate our web pages far beyond the ordinary. His attention to detail is AMAZING, and his expertise in SEO has significantly improved our web visibility. Thanks to Lucas, my digital presence has never been better. Highly recommend his services if you're looking to take your project to the next level!
Natalia NogueiraFounder & Strategic Consultant · Natália Nogueira Tech100% recommended. It was an absolute pleasure to work with someone like Lucas. His work ethic and implementation in web development were truly appreciated. He created a website using GHL, and even when we faced some challenges, Lucas always provided the best he could.
Kevin CardosoOwner · Kevin Cardoso ProFantastic! Lucas is the best.
Tim YoungOwner and attorney · Jones Act Law
Lucas Nobre
I'm Lucas Nobre, a freelance marketing and CRM specialist based in Fortaleza, Brazil. I started as a software developer at HP, which is why I test everything before it goes live.
Since 2021 I've built 150+ GoHighLevel sub-accounts and 100+ websites across 20+ industries, for clients in the US and 6+ other countries. Certified by CXL and the Interaction Design Foundation. My client work is under NDA, so names stay private.
Want an agent answering your leads?
Tell me where your leads come from, how many you get and what slows your team down. I’ll reply with what an agent could take over.
Email me