Understand the request
Identify the topic, urgency and intended next step in natural conversation.
Solution · Customer service
Customer service that answers before callers have to wait.
Call0 handles recurring questions from your approved knowledge, captures the reason for each call and hands complex cases to your team with context.
For your workflow
- Answer calls using only your approved knowledge
- Capture complete details in a consistent structure
- Hand off or create a callback according to your rules
Incoming service call
Call0 · call in progress
"How can I update the delivery address on my order?"
Call0 finds the approved service answer and collects the details needed for the next step.
Question answered · call documented
24/7
available according to your rules
Your own number
or forward existing calls
Knowledge base
approve answers with control
Transcript
keep every conversation traceable
The situation
Less phone chaos. More clear next steps.
Stay available during busy periods
Call0 can handle separate conversations up to the concurrency included in your plan, so callers do not all reach the same queue.Use knowledge, not a rigid script
The assistant works from the information and boundaries you approve for this workflow.Keep every handoff useful
Complex requests reach the right person with a concise summary and the caller details already attached.
Capabilities
A conversation that fits your workflow.
You define the knowledge, required fields, responsibilities and boundaries. Call0 applies that structure during the conversation.
Answer approved questions
Use your knowledge base for opening hours, processes and other approved information.
Capture required details
Collect names, contact details and workflow-specific fields during the call.
Route or schedule a callback
Transfer the call or create a clear follow-up task when your rules require it.
Document the conversation
Make the transcript, summary and captured outcome available to your team.
Connect your systems
Send structured results to supported integrations, webhooks or the 0API.
- Phone number & forwarding
- Calendar
- Knowledge base
- Webhooks & 0API
Why Call0
Why businesses choose Call0.
Why Call0
More than an AI answering machine.
Call0 does more than pick up. The assistant clarifies the request, hands over to your team when a person is needed, and answers with the same knowledge on WhatsApp, by email and in the website chat.
- Live the same day
- Enter your website, and Call0 builds the assistant from it. 15 test minutes in the browser, without a credit card or sales call.
- Several lines from the first plan
- Launch includes 3 concurrent calls, 700 minutes and 1 phone number. Nobody hears a busy tone when two customers call at once.
- A person takes over when it matters
- Handover to your team with a queue, hold music, opening hours and a callback list. The caller is never left hanging.
- Phone, WhatsApp, email and chat in one account
- One knowledge base for every channel. You maintain it once, and every assistant answers the same way.
- Over 500 integrations
- Appointments land in your calendar, requests in your CRM or ticketing system, without manual copying.
- Set up in conversation
- Agent0 sets up the assistant with you and changes it when you ask. No prompt writing, no flow builder.
Platform
What Call0 does besides the phone.
One account, one knowledge base, every channel. What you teach the phone assistant, the WhatsApp, email and website chat assistants know too.
- Phone assistant
Answers calls around the clock, books appointments, records requests and makes outbound calls. Speaks 13 languages.
Phone assistant → - Handover to your team
When a person is needed, the phones of your team ring: queue with hold music, ringing in turn, hold and transfer, opening hours and fallback rules.
- WhatsApp assistant
Replies to customer messages on WhatsApp with the same knowledge as on the phone. You choose between assist, approval and autopilot.
WhatsApp assistant → - Email assistant
Reads your inbox and prepares replies. Sensitive topics always go to a person; nothing is deleted or archived.
Email assistant → - Website chatbotComing soon
Answers visitors on your website from the same knowledge and hands over requests to your team.
Website chatbot → - Agent0 and integrations
Agent0 sets up and adjusts the assistant with you in plain language. Over 500 integrations connect calendars, CRM and ticketing systems.
Integrations →
Setup
From workflow design to the first test call.
Start small, test the most important scenarios and go live only when answers and handoffs work as intended.
- Step 01
Define the role and boundaries
Choose tone, responsibilities, escalation paths and the topics Call0 must not answer.
- Step 02
Add approved knowledge
Provide the recurring questions, processes and wording the assistant may use.
- Step 03
Test realistic conversations
Run normal, ambiguous and urgent scenarios before connecting real callers.
- Step 04
Connect your phone workflow
Use a Call0 number or forward existing calls according to your preferred setup.
FAQ
Frequently asked questions.
Your exact setup depends on telephony, workflows and the integrations you want to use.
What can Call0 handle for Customer service?
Call0 handles the questions and steps for which you provide approved knowledge or clear rules. If a reliable answer is missing, it can capture a callback request or hand off according to your setup.
Can a conversation be handed to my team?
Yes. You define the topics, hours, urgency levels and other conditions that trigger a transfer or a structured callback task.
Can I review what happened on the call?
Depending on your settings, the dashboard provides the transcript, summary and captured outcome so your team can continue with context.
Keep exploring
More relevant pages
Hear how Call0 can handle your workflow.
Start with a browser test, or discuss your phone number, knowledge and integrations in a personal demo.