• Chatbots

Viber chatbot: built for your store, within the channel's rules

A Viber chatbot answers buyers from your catalog and knowledge base, collects orders with a Nova Poshta branch, and hands a complex request to a person together with the conversation history. We build it for your task: our product LEO Chat has no ready-made Viber bot — it works in Telegram and on websites — so we carry its answer engine and ordering flow over to Viber. The channel has its own terms: since 5 February 2024 Rakuten Viber creates bots only on commercial terms, with a monthly fee per bot, so we go through them with you before the contract.

See how it works
Price
after a free audit
Guarantee
30 days after project sign-off
Access to the channel
since 5 February 2024 only on commercial terms, through an application to Rakuten Viber or its official partner
Price
after a free audit
Guarantee
30
days after project sign-off
Access to the channel
since 5 February 2024 only on commercial terms, through an application to Rakuten Viber or its official partner
Who the bot can message
only subscribers; a person's first message subscribes them automatically
Webhook
HTTPS only, with a certificate from a trusted authority; Viber does not accept self-signed ones
Answer engine
89.7%
accurate answers on 45 benchmark questions — measured in LEO Chat, not in Viber
Start
free review of the task
What's included

Complete list of work and what you get as a result

  • a review of Rakuten Viber's terms for your case before the contract: the bot application, the monthly fee, which messages are paid — the channel costs are visible in advance
  • preparing the bot application together with you: the bot is registered to your company
  • an HTTPS webhook with a certificate from a trusted authority — on your domain or on our server; Viber will not accept a webhook address with a self-signed certificate
  • a knowledge base built from your catalog and typical questions; if you already have a bot in Telegram or on your website — the same one
  • keyboards and product carousels (rich media) instead of long text lists, so the buyer chooses with a button
  • an ordering flow: cart, name, phone, Nova Poshta branch or parcel locker, and the waybill number in the same chat
  • payment by a link to your provider's page, and Viber's built-in payment only if your provider enables it
  • a welcome message for a person who has opened the chat but not written yet: Viber allows one such message, and it must be sent within 5 minutes
  • handing a request to an operator with the full history, so the person doesn't have to explain everything again
  • tracking of the messages the bot sends on its own initiative — these are exactly what Viber invoices for
  • a warranty of 30 calendar days from the date the acceptance act is signed
When this service isn't right

What's not included — so there are no surprises at delivery

  • Rakuten Viber's fee for the bot and for bot-initiated messages — Viber invoices your company, we are not an intermediary
  • mass notifications to numbers without a subscription — a separate Viber product (Business Messages), connected through a messaging provider as part of the SMS notification integration
  • Rakuten Viber's decision on the application and how long the review takes — this does not depend on us, and we do not promise it
  • running a Viber Community or Channel — the bot works as a separate bot account
  • LEO Chat as a ready subscription for Viber — the product does not support this channel yet
Who it's for

Situations where this service delivers results

Scenario 1 of 3

Customers already write to you in Viber

A manager answers from a personal phone, questions repeat, and in the evenings and at weekends nobody replies — the bot takes over the typical ones.

We'll review your situation in a free audit
Free audit

Free review: will a Viber bot pay off for your store

Viber charges a monthly fee per bot regardless of the number of conversations, so first we work out whether there is anyone in this channel for the bot to answer.

What we measure

  1. Where Viber requests come froma manager's personal number, a Community, or none at all
  2. Share of typical questionswhat from a month of conversations the bot would handle without a person
  3. Bot-initiated messagesstatuses, reminders, broadcasts to subscribers — these are exactly what Viber invoices for
  4. Payment providerwhether it enables Viber's built-in payment or you stay with a link to a payment page

What you get

  • a written conclusion on whether to launch a Viber bot
  • a list of the requests the bot will handle
  • the channel's cost structure: our work separately, Viber's fee separately

Timeline: 1–3 working days

Why is it free

Without counting requests and paid messages any estimate would be guesswork, and Viber's monthly fee makes a mistake expensive for the client in particular.

What's next

After that — an estimate broken down by stage and a contract with a fixed amount.

Short form: your contact and site URL
Contract and paperwork

We work officially

Contract, act and invoice — for every project, not just large ones.

Trusted by6 brands

Trusted by: Kvant Energy, GYPSUN, Naturel Cosmetics, Pancer Protection, LUGI, BeeTech

Terms fixed in writing8 points

  • Contract, act and 30-day warranty

    Every project gets a written contract: scope, deadlines, amount, acceptance procedure. After delivery — act and invoice, then 30 calendar days of warranty.

  • Sole proprietor & bank transfer

    The contractor is a registered sole proprietor. Payment by invoice with closing documents.

  • Rights & access — yours

    Code, design and materials transfer to you after full payment. Domain, hosting, repository and analytics are registered to you.

  • Client portal instead of email chains

    During the project you get access to a portal: contracts, invoices, acts and project status in one place.

  • Sites in nine countries

    Our sites run in nine countries: besides Ukraine — Poland, Germany, Austria, England, Norway, Bulgaria, Moldova and Spain.

  • Verifiable numbers

    Every case in the portfolio comes with a link to a live site and a technical measurement.

  • Audit first, then pricing

    There is no price list on the site intentionally: the scope of the same work differs multiples between clients.

  • We say "no" when unsure

    If the task isn't ours or the deadline is unrealistic — we tell you upfront.

  • Contract, act and 30-day warranty

    Every project gets a written contract: scope, deadlines, amount, acceptance procedure. After delivery — act and invoice, then 30 calendar days of warranty.

  • Sole proprietor & bank transfer

    The contractor is a registered sole proprietor. Payment by invoice with closing documents.

  • Rights & access — yours

    Code, design and materials transfer to you after full payment. Domain, hosting, repository and analytics are registered to you.

  • Client portal instead of email chains

    During the project you get access to a portal: contracts, invoices, acts and project status in one place.

  • Sites in nine countries

    Our sites run in nine countries: besides Ukraine — Poland, Germany, Austria, England, Norway, Bulgaria, Moldova and Spain.

  • Verifiable numbers

    Every case in the portfolio comes with a link to a live site and a technical measurement.

  • Audit first, then pricing

    There is no price list on the site intentionally: the scope of the same work differs multiples between clients.

  • We say "no" when unsure

    If the task isn't ours or the deadline is unrealistic — we tell you upfront.

We sign NDAs on request. After completing the work, we delete our access to your services ourselves.

What affects the price

Why two seemingly identical tasks are priced differently

  • Depth of the flowanswers from the knowledge base only, or a full order with Nova Poshta and payment — a different scope of work
  • Payment methoda link to the provider's page is simpler; Viber's built-in payment adds approval with the provider and separate tests on phones
  • Knowledge baseif a bot already works in Telegram or on your website, we don't rebuild the knowledge base — we just connect it
  • Bot-initiated messagesthey have little effect on our work but directly determine the monthly invoice from Viber — so we count them during the review
Cases

Tasks and results in numbers — all metrics measured by us

LEO Chat

LEO Chat — the agency's own chat-commerce product; channels: Telegram and a website widget

Task
Measure the two parts of our own product that we carry over to Viber: whether the engine answers only from the knowledge base, and whether the queue loses confirmed messages. The measurements were made in LEO Chat (Telegram and website).
Solution
An answer engine working from the store's knowledge base that hands anything unknown to an operator; a durable queue on NATS JetStream with deduplication and retries.
Result
4 July 2026, on a benchmark set of 45 questions — 89.7% accurate answers and not one outside the knowledge base. 17 August 2026, under a load of 300 messages per second with the engine, NATS and Redis forcibly killed — 0 lost and 0 duplicated confirmed messages; a k6 test on a full local stack, not in production. These measurements were not made in Viber: the channel is built for the project and tested on it.

Did not find your case?

Describe how it works on your side — we will tell you whether “Viber chatbot” fits and what it means in your situation. No brief and no call: one question, one answer.

Process steps

Transparent stages with approval at every step

Total duration:11–24 days

  1. Review and channel terms

    1–3 days

    We look at your Viber conversations, count typical requests and the messages the bot will send on its own, and show how Viber's fee is structured.

  2. Application to Rakuten Viber

    set by Viber

    We prepare the application for a bot on commercial terms together with you. Viber sets the review time; it is not part of our schedule.

  3. Webhook and knowledge base

    3–6 days

    We set up the webhook with a certificate from a trusted authority, connect the catalog and knowledge base, and run test conversations.

  4. Ordering flow and payment

    4–8 days

    Keyboards, product cards, cart, Nova Poshta branch, the waybill number in the chat; payment by link, or built-in if your provider enables it.

  5. Tests on three platforms

    2–4 days

    Android, iOS and Viber on a computer show the same messages differently, and built-in payment works only on phones.

  6. Launch

    1–3 days

    Handing complex requests to an operator, instructions for your staff member, monitoring of the first conversations.

Technologies & integrations

What we build on and what it connects to

Stack

  • the answer engine and ordering flow of LEO Chat — the agency's own product, running in Telegram and on websites
  • Viber REST Bot API: webhook, keyboards, rich media, messages with links
  • a message queue with retries and deduplication from the same product

Integrations

  • Nova Poshta — cities, branches, parcel lockers, waybill creation
  • the store's payment provider: payment link; Viber's built-in payment — only through LiqPay, Portmone or iPay
  • CRM via webhook
Viber bot vs Viber Business Messages notifications

How this option differs from the alternative

Viber Business Messages through a providerOur approach
Who can be messageda phone number through a messaging provider, under Viber's rules for business messagespeople who wrote to the bot themselves or subscribed to it
Conversationmostly a one-way message about a status or a promotiontwo-way: question, answer, cart, checkout
Placing an ordera link to the websitein the chat itself, with Nova Poshta and a waybill number
Where it is covered on our sitewe connect it as part of the SMS notification integrationthis page
What we need from you

We can't start without this — best to prepare in advance

  1. your company's details for the application to Rakuten Viber — the bot is registered to you
  2. a domain or server with HTTPS for the webhook; if you don't have one, we host the webhook on our server and hand it over under an acceptance act
  3. a product catalog or feed and examples of Viber requests from the last month
  4. details of the payment provider already working in your store
  5. a responsible person who takes over complex requests in the chat
If something is missing — let us know, we'll help you gather it or do it as a separate task.
FAQ

Most frequently asked questions — with concrete answers

Can we create a Viber bot ourselves, the way you can in Telegram?

You can submit the application yourselves — directly to Rakuten Viber or through its official partner: since 5 February 2024 bots are created only on commercial terms. The Viber REST Bot API documentation on developers.viber.com says so plainly. That is why our work plan has a separate application stage, and its timeline is set by Viber.

How much does Viber charge for the bot, on top of your work?

According to the Rakuten Viber rate card (forbusiness.viber.com, checked 12 September 2026): €115 a month per bot plus a charge for every message the bot sends on its own initiative; for Ukraine, €0.0196 per message. Messages within a session — a conversation started by the buyer — are covered by the monthly fee without limits. Viber sets the rate and may change it, so we check the current one during the review. Viber invoices your company directly; we are not an intermediary. The rate card notes that rates may differ for certain industries and that promotional rates sometimes apply to messages outside a session; it does not mention VAT.

Can the bot message a customer first?

Only people already subscribed to the bot; a person's first message subscribes them automatically. For someone who has opened the chat but not written anything yet, Viber allows one welcome message, and it must be sent within 5 minutes. Everything the bot sends on its own initiative is charged separately — so we plan such messages deliberately.

Can the bot send broadcasts to its subscribers?

Yes, via the broadcast_message method: up to 300 recipients per request and no more than 500 requests per 10 seconds. You can only write to subscribers, and under the Viber rate card such a message is initiated by the bot, so it is paid. Notifications to numbers that have not subscribed to the bot are Viber Business Messages through a provider — a separate service.

Can an order be paid right inside Viber?

Viber has a Bot Payment API with Google Pay on Android and Apple Pay on iOS, but according to its documentation payment is available only to users in Ukraine, only on phones and only through LiqPay, Portmone or iPay — after the provider signs a contract with you and clears it with Viber. The button leading to payment works for 15 minutes. If you use a different provider, the bot sends a link to its payment page — the same way our payment bot does it in Telegram.

Do you already have a working Viber bot?

No. LEO Chat, our product, works in Telegram and in a widget on the website; Viber is not supported in it yet. What we carry over to Viber is what has already been measured: the answer engine (89.7% accurate answers on 45 benchmark questions, 4 July 2026) and the ordering flow with Nova Poshta. The Viber channel itself — webhook, keyboards, payment — we build and test within your project.

What will a customer writing from Viber on a computer see?

Answers, buttons and product cards reach the desktop too, but look different than on a phone. Viber's built-in payment does not work on a computer: Viber shows that this message type is not supported on the device. So we test the flow on Android, iOS and desktop separately, and on desktop we fall back to a payment link.

How long does the launch take?

Our stages add up to 11–24 days: review, webhook and knowledge base, ordering flow with payment, tests on three platforms, and launch. On top of that comes Rakuten Viber's review of the application — we do not control its timeline and do not promise it. Warranty — 30 calendar days from the date the acceptance act is signed; we reply to requests within 2 hours.

Let us work out what a Viber channel will cost your store

We will look at your Viber conversations, say what a bot would handle, and show our work and Viber's fee separately. The review is free, we reply within 2 hours.

From measured cases4 July 2026, on a benchmark set of 45 questions

View cases
  • Reply within 2 hours
  • No commitment
  • We work under a contract

There is no price list on the site on purpose: the same work differs several times over between two clients, and a “from” figure explains nothing in that case. First a free audit — we count your pages, duplicates and speed — then we name the sum and the deadline and fix both in the contract.