Hesvian Labs

Your next system. Built asynchronously.

Start a project

AI agents and chatbots

Custom AI agents and chatbots that know your business and its limits.

Assistants for customer service and internal work, on your website, in WhatsApp or inside your tools, that answer from your own knowledge, take clearly defined actions and hand over to a person when they should.

When an AI agent or chatbot makes sense

  • The same questions, all day

    Opening hours, order status, pricing rules or onboarding steps answered by hand across email, chat and WhatsApp.

  • Answers needed outside working hours

    Simple requests wait until the next working day because nobody is there to look them up.

  • Scripted bots that frustrate customers

    Menu-driven chatbots that cannot understand a real question or reach a person.

  • Repetitive internal requests

    Teams asking operations, HR or IT the same things, with the answers buried in documents.

What we build

  • Customer service chatbots

    Answers grounded in your help content and policies, with sources, tone and topics you approve, on your website or in your support tools.

  • Chatbots over your company documents

    Assistants that answer from your manuals, policies and past tickets using retrieval-augmented generation (RAG), show their sources and respect who may see what.

  • AI agents that take actions

    Agents that look up an order, create a ticket or book a slot through your systems’ APIs, with permissions limited to each task.

  • WhatsApp Business automation

    Conversations on the WhatsApp Business Platform: answers, requests, order updates and handover to your team.

  • Human handover

    Clear rules for when the assistant stops and a person takes over, with the conversation attached.

  • Review and improvement

    Logs of answers, handovers and corrections, reviewed regularly to improve sources and rules.

Channels and systems it can work with

Channels
  • Website chat
  • WhatsApp Business Platform
  • Email
  • Slack
  • Microsoft Teams
Systems the agent can use
  • CRM
  • Help desk (Intercom, Zendesk)
  • Booking and order systems
  • Your own APIs
Models
  • OpenAI
  • Anthropic (Claude)
  • Google (Gemini)

WhatsApp access goes through Meta’s WhatsApp Business Platform, directly or through a provider, and its policies and fees apply. Hesvian Labs is not affiliated with Meta or the other vendors named here.

How a project runs

We start by reading real conversations: what people ask, what the assistant must never do and when a person has to step in. Those rules become the specification and the test set.

  1. 01

    Clarity Sprint

    Project fee $4,500

    An audit of how the work happens today and a decision-ready system plan.

  2. 02

    System Delivery

    From $20,000

    The software, AI capabilities and integrations defined in the blueprint, delivered in clear milestones.

  3. 03

    Continuous Evolution

    From $2,000

    Ongoing improvements with agreed capacity, once the system is live.

All prices in USD, including applicable taxes. Each stage is scoped and approved separately. Pricing and what each stage includes

Rules we build in

  • People should know it is an AI

    Assistants say clearly that they are automated and how to reach a person. In the EU, the AI Act requires systems that talk to people to disclose that they are AI unless it is obvious, and we design for it from the start.

  • WhatsApp has its own rules

    Messages a business starts need the customer’s prior opt-in and approved templates, and automated replies must offer a clear way to reach a person. Meta sets those rules and the pricing, and they change from time to time.

  • Agents only get the access they need

    Each action is limited by permissions, logged, and confirmed with the user when it has consequences, such as payments, cancellations or data changes.

  • Wrong answers are possible

    Even grounded assistants can be wrong. We test them on real questions, show sources and keep reviewing after launch.

Example: order questions for a wholesale distributor

Illustrative scenario — not a client project

A distributor’s customer service team answers order-status questions by email and WhatsApp. Most are simple lookups in the order system; a few need a person.

  1. Review a sample of past conversations and define which questions the assistant may answer.
  2. Connect a read-only order lookup through the order system’s API.
  3. Answer on WhatsApp and web chat, with a clear handover for returns, complaints and anything unusual.
  4. Track answers that were wrong or handed over, and adjust the rules weekly at first.

The aim would be faster answers to routine questions and more time for the cases that need judgment. The effect depends on the share of routine questions, which we would measure first.

Questions

  • Can it answer on WhatsApp?

    Yes, through the WhatsApp Business Platform. You need a WhatsApp Business account set up with Meta and, for messages your business starts, approved templates and the customer’s opt-in. We help with the setup.

  • Will it make things up?

    We reduce that risk by answering only from approved sources, showing them and handing over when the assistant is unsure. No one can guarantee zero errors, so we test on real questions and review after launch.

  • Can it take actions, not only answer?

    Yes, when your systems have APIs. Actions are limited to specific tasks, use the minimum permissions and ask for confirmation when the consequences matter.

  • Where are the conversations stored?

    In the accounts and tools you choose. We document which providers process conversation data, so you can include them in your own privacy information.

Start with one process your team repeats.

Describe a process that takes too much manual work. You’ll get a straight answer on what can be automated, what needs custom software and what is better left as it is.