Let Your AI Agent Run Your Own Dialer, With Limits You Set

A free MCP server for your on-premise Voicent Gateway

Your AI agent can place calls and texts, run campaigns, check results, and read and update CRM records through your own gateway. Out of the box it can call or text any number and use the CRM, so set your limits before you connect: list the numbers it may reach, or turn calls, texts or CRM tools off. Campaigns stay off until you turn them on, and a campaign contacts everyone on its list.

Requires Voicent Gateway 10.10.3 or later.

License and Quote Get the MCP Server on GitHub

What It Does

Your agent does the work

Place a text-to-speech call or send a text. Look up a customer, update fields, add a note or schedule a callback. Import a list, run an autodialer or text campaign, then read the status and export the results.

You run the dialer

The server works with your own Voicent Gateway, not our cloud. Your dialer and its data live on your server. Only what your agent reads or sends goes through the AI client you choose.

You set the limits

A tool you turn off doesn't exist for the agent. Calls and texts, CRM tools and campaigns have separate switches, and you can limit calls and texts to a list of numbers.

MCP (Model Context Protocol) is how an AI client connects to outside tools. This server gives the client a set of tools for your gateway. It is not an AI voice agent: your AI assistant operates the dialer through these tools, and it doesn't hold conversations on the call.

Tools

Setting	Tool	What it does
Always on	`call_status`	Check a call
	`campaign_status`	Check a campaign
	`import_status`	Check a list import
On unless `VOICENT_ALLOW_CALLS=0`	`call_text`	Call and speak your text with text-to-speech
	`call_audio`	Call and play an audio file
	`call_ivr`	Call using a deployed outbound IVR app
	`send_sms`	Send a text
	`call_remove`	Remove a call request
On unless `VOICENT_ALLOW_CRM=0`	`crm_get_field`	Read a field from a customer record
	`crm_add_or_update`	Add a customer, or fill in an existing record
	`crm_set_field`	Change a field on a customer record
	`crm_add_note`	Add a note to a customer record
	`crm_schedule_callback`	Schedule a callback
	`crm_notify_agent`	Send a plain-text notification to an agent
Off unless `VOICENT_ALLOW_CAMPAIGNS=1`	`campaign_import_list`	Import a contact list
	`campaign_upload_audio`	Upload audio for a campaign
	`campaign_export`	Export campaign results
	`campaign_run_autodialer`	Run an autodialer campaign
	`campaign_run_text`	Run a text campaign
	`campaign_run_email`	Run an email campaign

Not included

Predictive dialer campaigns, scheduled or recurring campaigns, uploading files to a remote gateway, and searching, listing or deleting CRM records. Without search, the agent needs a record's ID, or a customer's phone number or email. If you need these from an AI agent, this server doesn't do them today.

Safety Defaults

By default, the agent can call or text any number. To limit it, for example while testing, list the allowed numbers in VOICENT_ALLOWED_NUMBERS. To turn calls and texts off, set VOICENT_ALLOW_CALLS=0.
CRM reads send customer records to your AI provider, and CRM writes change them. To turn the CRM tools off, set VOICENT_ALLOW_CRM=0.
CRM tools have limits. Only known fields can be read or changed. Through the CRM tools, the agent can mark a customer do-not-call or do-not-email, but only a person can clear it. Adding a customer only fills empty values unless the agent asks to overwrite.
Campaigns have their own switch, and the number list doesn't apply to them. A campaign contacts everyone on its list, so only set VOICENT_ALLOW_CAMPAIGNS=1 where that's acceptable. With campaigns on, a list import can update any column of matching contacts, including clearing do-not-call, so only put files in VOICENT_FILE_ROOT that you'd import yourself.
File access stays in one folder. Audio, import and export files must be inside VOICENT_FILE_ROOT. File tools refuse to run without it.
Requests use a fixed set of fields. The server never sends the gateway's fields for running programs or database queries, or its do-not-call bypass.
Phone numbers are checked. Each must be a single number in a strict format, which blocks the gateway's special values.

Protect the gateway itself. These limits apply to what the MCP server sends. They don't protect a gateway that other people can reach directly. Set the gateway's Remote Connect Password in Voicent App > Setup > Options > Control, and keep port 8155 off the internet and other untrusted networks.

Your calling is still your responsibility. You are responsible for consent and for the laws that apply to your calls, texts and emails. Using this server doesn't make them legally compliant, and these limits are no substitute for checking who is on your lists.

Connect It

Add the server to your AI client. For Claude Code, add this to .mcp.json, using the path to your copy:

{
  "mcpServers": {
    "voicent": {
      "command": "C:\\path\\to\\voicent-mcp.exe",
      "env": {
        "VOICENT_GATEWAY_URL": "http://localhost:8155"
      }
    }
  }
}

Before you connect: with only these settings, the agent can call or text any number, and read and change CRM records. Add "VOICENT_ALLOWED_NUMBERS": "650-555-0100,650-555-0101" to limit the numbers, "VOICENT_ALLOW_CALLS": "0" or "VOICENT_ALLOW_CRM": "0" to turn those tools off, or "VOICENT_ALLOW_CAMPAIGNS": "1" to turn campaigns on.

File paths are read by the gateway, so file tools only work when the server runs on the gateway machine. If the gateway is on another machine, set VOICENT_PASSWORD to its Remote Connect Password.

See the setup guide for all settings.

Download the server from the GitHub release.

Known Limits

Phone and email lookups can match the wrong record when there are duplicates. Use the record ID when you have it.
An IVR app with no answering machine message can occasionally end as failed when it reaches voicemail. Add the message to the app in IVR Studio.
call_ivr can't check that an app is outbound. It refuses names that aren't deployed, but you need to make sure it only uses outbound apps.

License Needed

The MCP server is free. Its source is under the MIT license, which covers the MCP server only.

To use it, you need a licensed Voicent Gateway with the Workflow license plus Enterprise Edition. There is no fixed price for this, because Voicent has multiple products. Request a quote and we'll price it for your setup. A license covers a number of lines and users, so tell us how many you need. If you already own Voicent software, include your order ID.

One-time license. The licensed software keeps working on the same computer and the same version without annual support, but there is no technical support, new releases, or license transfer to another computer.
Annual support is strongly recommended. It costs 30% of the purchase price per year, with a $99/month minimum. Without support, we won't be able to help you if the software fails to work for any reason.
No per-minute fees from Voicent. You pay your own phone service for calls.
30-day money-back guarantee on on-premise software. After 30 days there are no returns, regardless of the reason. The guarantee doesn't apply to the cloud service.
Windows. Voicent supports Windows 10 and later. The software should also work on older Windows versions.

More details are in the License FAQ.