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K:AI Customer Agent

The AI customer service agent that already knows your customers

Resolve issues faster, drive more revenue, and deepen relationships with personalised service from Customer Agent—powered by your customer data from day one.

A chat interface showing an AI assistant recommending "Meridian 26K Sneakers" for $250.00 with a 4-star rating in response to a user's query.
built for b2c

Deliver personalised customer experiences instantly

Customer Agent makes every interaction more valuable, connecting with your customers across the channels they use, in the language they speak.

Start fast, powered by your data

Launch right away with pre-built skills and integrations, then prompt AI to create custom experiences for you.

Always learning, 
always optimising

Your agent checks its own work, spots what's not working, and never stops improving.

An agent that takes action

Most agents answer. Customer Agent acts. Connected to your entire tech stack, it handles requests end to end.

Accurate and on-brand, every time

Test everything before it goes live. Built-in simulations, audit trails, and guardrails keep every response accurate.

Graphic with bold text stating “65% of all customer questions autonomously resolved by Customer Agent.

powered by your data

Go live in days, not weeks

Customer Agent comes pre-trained on your brand and empowers your teams to customise it further with just a prompt. Easy.

Build your custom agent

Create your ideal customer experience by telling your agent exactly what you have in mind. Klaviyo AI brings it to life in minutes—no engineers needed.

Ready to answer questions and close tickets

Pre-built retail skills provide instant answers to common questions like “Where is my order?” and help out with returns, loyalty, subscriptions, promotions, and more.

An agent that knows you

Pre-trained on your data, policies, and brand voice, Customer Agent can start supporting your customers right away.

A screen titled "Build your agent" displays options for skills, tools, and tone, with an "Ask anything" text input.
Built-in skills

Ready to respond, right out of the box

Get ahead of your customers’ most common questions. No training, configuration, or engineering needed.

Always learning, always optimizing

Service that learns from every customer moment

Give your agent feedback and watch it improve itself. The longer it runs, the smarter it gets.

A continuous improvement loop

Every day, Customer Agent reviews its own work, flags moments that didn’t land, and autonomously closes the gap.

Preview performance before launch

Test how your agent responds with built-in simulations, and tweak it until you’re ready to go live.

Fine-tune behaviour in plain language

Chat with your agent to adjust how it acts and responds. AI does the work for you, so it’s easy to keep improving.

UI card titled "Agent works out of the box" displaying 51% current resolution, 83% expected resolution, and 17% human handoff. It lists agent-handled topics (store locations, loyalty) and topics needing review (order tracking, shipping).
Act across your entire tech stack

Resolve issues faster with AI that takes action

Some customers ask for help completing a task, like starting a return or editing an order. Customer Agent can actually complete the task for them.

Ready to act across your full tech stack

Connect to any system through pre-built connectors or open APIs, so your agent can take action on behalf of customers.

AI that does the work

Customer Agent can check loyalty points, process returns, edit orders, apply promotions, and provide recommendations without escalating to your team.

Every conversation improves personalisation

Klaviyo learns more about each customer every time they engage. All that data gets stored in their profile, so your agent can use it to tailor future experiences.

Input field with "Using the customer agent API...", a ChatGPT logo, and a send button.
Accurate and on-brand, every time

An agent you can trust.
No surprises.

How your agent acts and responds is up to you. You’re in control.

Your brand voice

Define your agent's tone, persona, and communication style. Set guardrails that keep every response on-brand and on-policy.

You set the rules. Not us.

Configure how each skill behaves, what triggers an escalation, and how your agent represents your brand. No engineers required.

Hand off to live agents with complete context

When a customer needs human support, your agent routes to Klaviyo Helpdesk or your existing helpdesk with the full history attached. No need to start over.

A user interface for setting "Customer Agent voice and tone", with "Custom" selected and displaying a detailed description for a confident, warm, concise, and clear response style.

“Klaviyo has always prioritised customer activity. It makes perfect sense that they'd be able to take that data and help marketers and service teams make smarter choices on how to help their customers.”

Emeric Harney, Director of marketing at Harney & Sons

Why Klaviyo is different

With marketing and service together, every interaction makes the next one better

Every other service tool is built for service alone. Klaviyo is where your marketing data already lives — and when service runs on that same data, every interaction gets smarter.

It's not just a better agent. It's better data, powering a better agent, compounding with every conversation.

Flow diagram showing Customer Agent connected to customer profile, richer data, and Marketing Agent, leading to higher lifetime value.

Trusted by brands worldwide

Customer Agent FAQ

Customer Agent is an AI-powered autonomous service agent built on the Klaviyo CRM. It resolves support conversations, drives revenue through personalised recommendations, and enriches your customer profile — with 65% of questions resolved without a human agent involved.