AI Agent
One agent for one job, wired to your channels and data.
From $8,000
- Agent with tools and retrieval
- Eval suite in CI
- Review console and hand-off to a person
A deposit, then billed by milestone.
AI agents & assistants
WhatsApp AI agents that answer from your own data.
We build AI agents for WhatsApp that answer customers, take orders and bookings, qualify leads and hand the chat to a person when they should. They run on your own number through Meta's official WhatsApp Cloud API, and they pass their evals before they talk to a customer.
What it does
- Answers questions about products, prices, hours and policies from your own catalog and documents.
- Takes orders and bookings in the chat and writes them into your system, so nobody retypes them.
- Qualifies leads at any hour and books a call with your team.
- Hands the chat to a person, with the context, when a question is out of scope or the customer asks for one.
How it works on WhatsApp
Your number, Meta's official API
The agent answers on your own WhatsApp Business number through the WhatsApp Cloud API. The account and the number stay yours.
The customer writes first
The agent replies to customers who write to you. To start a conversation, WhatsApp only allows message templates that Meta approves beforehand, and we write them with you.
Fees go to your accounts
Meta bills the WhatsApp messages and the AI provider bills model usage, directly to your own accounts, not through us.
One agent, more channels
The same agent can answer in a chat widget on your website, from the same data, so both channels give the same answer.
How we build it
How we work- 01
Map the job
We read real conversations and write down what the agent handles, what it never does and when it hands off to a person.
- 02
Wire it to your data
Tools for your catalog, calendar or CRM, and retrieval over your documents, so every answer has a source.
- 03
Write the evals
Graded test cases from your conversations, with a pass threshold. They run in CI on every change, and again when the model or the prompt changes.
- 04
Pilot and watch
A first group of real customers, a console to review conversations and hand-offs, and a second provider that takes over if the main model is down.
Stack
- Claude
- Python
- FastAPI
- Postgres
- pgvector
- WhatsApp Cloud API
Engagement
Engagements and pricingFAQ
Do I need a WhatsApp Business account?
Yes. The agent runs on your own WhatsApp Business account and number, on Meta's WhatsApp Cloud API. We help you set it up with Meta, and it stays yours if we stop working together.
Is this a chatbot with fixed menus?
No. It reads what the customer writes and answers from your data, and it uses tools to check stock, prices or your calendar. What it may do and when it hands off are written down before we build it, and the evals check them.
What happens when it doesn't know the answer?
It says so and hands the chat to a person on your team, with the conversation so far. The evals include those cases, so it hands off instead of guessing.
Which languages does it speak?
The ones your customers write in. The evals include cases in each language you need, and a language goes live only once its cases pass.
What does a WhatsApp AI agent cost?
It's an AI Agent engagement, from $8,000, and the proposal fixes the price of each milestone. WhatsApp messages and model usage are billed by Meta and the AI provider to your own accounts.
Guides
All guidesGuide 08 · 3 min A build log, explained: how AI agents and an engineer ship a pull request.
The home page of this site replays a pull request: spec, plan, changes, tests, deploy. This guide walks through that pull request, the one that added AI triage of new leads, and what a person did at each step while agents wrote the code.
Guide 06 · 2 min AI agent or chatbot on WhatsApp: which one your business needs.
A chatbot follows a menu someone wrote. An AI agent reads what the customer wrote and looks up the answer. Both run on WhatsApp, both have a place, and the right one depends on what your customers ask.
Guide 05 · 3 min How we test an AI agent before it talks to a customer.
A demo shows the answers someone picked. Evals are graded test cases with a pass threshold, and an agent stays off until it meets it. This is how we write them, with the evals behind this site's own lead triage as the example.
Guide 02 · 4 min How to build a WhatsApp AI agent for your business, step by step.
These are the four steps we follow to build an AI agent on WhatsApp, with what Meta's platform asks for at each one. It's written for the person who decides whether to build one, with enough detail for the engineer who will.
Guide 01 · 4 min How much does an AI agent cost? Prices from a studio that builds them.
Building an AI agent with us starts from $8,000, at a fixed price per milestone. Running it costs model usage and channel fees, billed by those providers to your own accounts. This guide explains what moves both, and what to ask any team before you hire them.
Read next
01 AI agents & assistants
Agents that answer, sell, book and triage over WhatsApp, web chat and your own tools.
How we build AI drafts. An engineer decides.
The spec, the reviews, the tests and the evals behind every service.
Have something to build? Tell us about it.
A person reads every brief and replies with questions or a first plan.