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Voice AI Agent

Turn every phone call into an instant, knowledgeable answer.

Deploy a voice AI agent trained on your documents in minutes. Connect your existing Twilio or Vapi number, customize how it speaks, and give customers accurate answers without keeping your team on the phone.

Build your voice agentWorks with Twilio and Vapi

Bring your own number. Use the knowledge you already have. Live in minutes.

Live call
02:18

Incoming on Support

+1 (415) 555-0198

Caller

Can I return an order after 30 days if it is still unopened?

Denser voice agent

Yes. Unopened items can be returned within 45 days with the original receipt.

Answer grounded in Return Policy · Page 2
Call saved to Chatlog

Customer proof

Trusted by businesses worldwide

2k+

active teams

24/7

support coverage

50%

fewer tickets

City of San JoséCity of San José
Bridgelux
Onondaga CountyOnondaga County
EOS AustraliaEOS Australia
LenderDock
PortfolioboxPortfoliobox
UpsiideUpsiide
Valk WeldingValk Welding

Live in minutes

From documents to deployed voice agent in three steps.

Add voice to the support system you already run. No separate knowledge base and no new phone number required.

  1. 01

    Connect your knowledge

    Upload documents, add website pages, or use an existing Denser knowledge base. Your voice agent answers from the content you approve.

  2. 02

    Connect your number

    Use your existing Twilio number or connect through Vapi. You keep control of your telephony provider and phone number.

  3. 03

    Customize and go live

    Set the greeting, instructions, tone, and follow-up rules. Test the experience, then start answering calls.

Use your existing voice stack

Your number. Your provider. Your AI agent.

Denser works with Twilio and Vapi, so you can add AI without replacing the phone infrastructure you already use.

T

Twilio

Point your number’s incoming-call webhook to your Denser agent. Your number stays in your Twilio account.

Keep your existing number
V

Vapi

Connect Denser to a Vapi assistant, use a Vapi number, or bring your own number over SIP.

Use Vapi or bring your own

Your provider runs the call. Denser retrieves the right information and generates the answer.

Built on your content

A voice agent that knows your business—not the whole internet.

Denser searches your approved documents before answering. Customers hear responses grounded in your products, policies, and support material—not improvised information.

  • Use PDFs, Word files, presentations, text, and website content.
  • Update the knowledge base without rewriting call flows.
  • Reuse the same knowledge across voice, chat, email, and API.

Connected knowledge

Return Policy.pdf

12 pages

Product Help Center

186 pages

Shipping & Delivery.docx

8 pages

Answer pathGrounded

Customer asks

“When will my replacement arrive?”

Voice answer

Replacements ship within one business day and typically arrive in three to five days.

Source: Shipping & Delivery · Replacements

Sound like your brand

You decide how every conversation begins—and how the agent responds.

Customize the greeting, prompt, tone, instructions, and follow-up behavior so the agent represents your company consistently.

Voice experience

Support line · Published

Live

Greeting

Thanks for calling Northstar. I’m the virtual support assistant. How can I help today?

Agent instructions

Be warm and concise. Answer only from approved sources. Ask one clarifying question when needed. Create a follow-up ticket for account changes.

Test call

Northstar support

Connected · 00:24

Nothing disappears after the call

Every conversation becomes work your team can act on.

Voice conversations are saved in Denser Chatlog and converted into customer tickets. Review what the customer asked, assign an owner, and follow up offline without asking them to repeat everything.

Call completed

+1 (415) 555-0198 · 3m 42s

Customer

I need to change the address on an order.

Voice agent

I’ll have the support team follow up securely.

Transcript saved in Chatlog

New ticket · Phone

Update shipping address

Open

Customer needs an address change for an order already placed. Secure verification required.

Unassigned
View conversation →

Full context

The conversation stays attached to the customer request.

Automatic tickets

Every call enters the same queue as your other channels.

Offline follow-up

Assign work and respond when a person is actually needed.

One agent, many call types

Automate the calls that consume your team’s day.

Resolve repeatable questions immediately and preserve a clean handoff for everything else.

01

Product questions

Answer questions about features, compatibility, pricing, and availability from approved product content.

02

Customer support

Walk callers through common setup and troubleshooting steps without putting them on hold.

03

Policies and procedures

Explain shipping, returns, warranties, scheduling, and company policies consistently.

04

After-hours coverage

Help callers while your team is offline and create tickets for anything that needs follow-up.

Integrations
WordPress
Slack
WhatsApp
Telegram
Shopify

Connect the channels where customers already ask.

Embed Denser on your website, or deploy it to WordPress, Slack, WhatsApp, Telegram, and Shopify, so every cited answer reaches customers wherever they already are. No code required.

Questions

What to know before your first call.

Can I use my existing phone number?+

Yes. Connect an existing Twilio number, or use Vapi with a Vapi number or a number you bring over SIP. You keep control of your telephony account while Denser powers the answers.

Which voice platforms does Denser support?+

Denser supports Twilio and Vapi. Both platforms manage the phone connection while Denser provides knowledge-grounded responses.

What can I train the voice agent on?+

Use website pages, PDFs, Word documents, presentations, plain text, and your existing Denser knowledge bases.

How quickly can I deploy an agent?+

If your content and phone number are ready, you can connect, configure, test, and deploy a voice agent within minutes.

Can I customize what the agent says?+

Yes. Customize its greeting, instructions, tone, response style, and rules for handling questions or creating a follow-up ticket.

Are calls saved?+

Yes. Voice conversations appear in Denser Chatlog, and calls become customer tickets so your team can assign an owner, track the request, and follow up offline.

Can it use the same content as my website agent?+

Yes. Voice and website agents can answer from the same Denser knowledge base, keeping information consistent across channels.

What happens when the agent cannot answer?+

The conversation becomes a ticket with its context attached, giving your team a clear follow-up task without making the customer start over.

Take the next call

Your voice agent can be answering customers in minutes.

Connect your documents, bring your phone number, and deploy an AI agent that answers customers and keeps every follow-up organized.

Start free. Connect with Twilio or Vapi.