Give your AI agent a phone number
KaiCalls lets an agent place and answer real calls through MCP, using the make_call action. Kai Backup is $10 a month, with a $2 first week.
| Option | Works today as | Price |
|---|---|---|
| KaiCallsGive your agent a phone line that can place calls to businesses and answer incoming calls. | Official MCP from the vendor | Kai Backup $10/month, $2 first week |
We make KaiCalls. Made by the team behind KaiCalls, which is one of the listings. We have no tie to any other provider here, and there are no affiliate links.
Set it up
- Start a KaiCalls plan.
- In Claude, add a custom connector with the KaiCalls MCP URL.
- Ask Claude to place a call. It uses the
make_callaction.
https://www.kaicalls.com/api/mcp
Calls must follow TCPA rules. Other features and limits are on kaicalls.com (check).
Other ways to give an agent a phone
These are other projects in our directory. They are not ours.
| Option | Works today as | Price |
|---|---|---|
| agentphone-mcpGive an agent a phone number to make and receive calls and texts. | Official MCP from the vendor | free (open source) |
| Twilio Labs MCP serverCall Twilio's whole API as tools: send SMS, place calls and manage numbers, from Twilio Labs. | Official MCP from the vendor | free (open source) |
| sv-number MCP serverOrder a private phone number in 200+ countries and receive SMS and calls on it. | Official MCP from the vendor | free (open source) |
| placecallHave an agent phone any US business to book, ask availability or get a quote. | Official MCP from the vendor | free (open source) |
| Vapi agent skills + MCPBuild and manage Vapi voice agents that make real calls, from Vapi. | Official MCP from the vendor | free (source on GitHub; no license file) |
“Live through our connector” runs through Real World MCP today. “Official MCP” is the vendor's own server. “Manual” means you or a browser use the provider's site. Prices are the provider's own and change. Browse every calls & messaging entry.
What people have done
These stories used other call tools, not KaiCalls. We found no public KaiCalls story yet.
- Get a car service quote without waiting on hold yourself
The agent sat through the hold queue at a San Francisco tire shop and came back with $129.99 for a standard alignment, about $210 for lifetime, and word that walk-ins take one to two hours.
- Book a lawyer consultation and negotiate the fee down
A Michigan firm quoted $400 for a consult on software law. After checking with the user, the agent negotiated a 30-minute phone consultation for $300 on a weekday evening.
- Get a cable company's retention team to lower your internet bill
The agent said 'cancel' at Spectrum's phone menu to reach retention, waited about five minutes, then patched in the account holder when the rep would not deal with an assistant. The user came away with $55 a month for a year instead of $85.
- Ask a store to hold an item for pickup today
With a gala at 5 and a broken shoe, the user had the agent call a Men's Wearhouse to hold a specific pair of loafers in their size. The associate set them aside under the user's name with no card needed.
Questions people ask
How do I give my AI agent a phone number?
Use a phone service with an MCP server. KaiCalls lets an agent place and answer real calls through MCP with the make_call action. AgentPhone, Twilio Labs and sv-number also have official MCP servers.
How much does KaiCalls cost?
Kai Backup is $10 a month, with a $2 first week.
Who makes KaiCalls?
We do. Real World MCP is made by the team behind KaiCalls. We have no tie to the other providers listed here.