Trillet MCP
Build and manage AI voice agents from Claude and ChatGPT
Trillet MCP connects your AI assistant to your Trillet account. Ask in plain words and it builds and edits your agents; in Claude it also tests them, puts them on a number and reviews their calls. Sign in from ChatGPT or Claude at mcp.trillet.ai, or run the npm package @trillet-ai/mcp.
How it works
From a chat to a working agent.
Connect once, then ask for what you want. The assistant uses Trillet’s own tools, in your workspace, as you.
In ChatGPT or Claude, add Trillet’s MCP server, mcp.trillet.ai/mcp, as a connector. Sign in with your Trillet account, pick the workspace it starts in and allow access: there’s no API key to copy. Developers can run the npm package @trillet-ai/mcp in Claude Code, Cursor or Codex instead.
“Create a front desk agent for a dental clinic with a calm voice, open 8 to 6 on weekdays.” The assistant creates the agent, finds a voice that fits, writes its prompt and welcome message, and sets its office hours.
In Claude, ask it to test the agent: it holds a text conversation with the agent, plays the caller you describe and tells you what to fix. A text test is a real call, so bookings and webhooks run for real. For a prospect, ask for a shareable demo link instead.
Ask it to find a local number, buy it once you approve, and connect it to the agent. Later, ask how the calls went: it reads the transcripts and analysis and points to the calls that need a look. Numbers and calls are available in Claude, Claude Code and Cursor.
In action
Connecting an AI assistant to Trillet
The sign-in screen where you allow access and choose the workspace.
Build
Agents built by asking.
What an agent says and how it handles calls, set from the conversation in ChatGPT or Claude.
Agents and voices
Create and edit agents, and choose a voice from the voice catalogue by describing the one you want.
Prompts and welcome messages
Rewrite an agent’s prompt or welcome message in plain words. Each prompt change is saved as a version.
Hours and call handling
Set office hours, voicemail detection, speech settings and transfer rules.
Post-call fields
Add the fields the agent records after every call, such as whether the caller wanted a quote.
Test
Tested from the chat.
Tests run in Claude, Claude Code and Cursor, where the assistant talks to your agent itself. Demo links work from ChatGPT too.
Text test calls
The assistant holds a text conversation with the agent and plays the caller you describe, like the test panel in text mode.
Advanced call flows checked
For node-based call flows it validates the graph and runs the simulator before you publish.
Scripted test runs
In Claude Code and Cursor, the test-agent prompt runs scripted conversations and returns a pass or fail table with the smallest prompt fixes.
Demo links for prospects
Create a shareable demo link, so a prospect can talk to the agent in a browser.
Numbers and calls
Live numbers and real calls, from the chat.
In Claude, Claude Code and Cursor the assistant can put an agent on a number and tell you how its calls went. Buying a number, registering one and placing an outbound call each wait for your yes.
Numbers found and connected
Search available numbers, buy one after you approve it, and connect it to an agent.
Numbers you already have
Register a number from your own telephony account or SIP trunk and connect it to an agent.
Outbound calls on request
Ask the agent to call a number; the call is placed only after you confirm.
Calls reviewed for you
Read transcripts, post-call analysis and call metrics, or ask for a digest of the calls where something went wrong.
Workspaces
Every client workspace from one chat.
One sign-in reaches every workspace you belong to, so an agency can work across its clients without reconnecting.
All your workspaces
The connection can act in every workspace you belong to, such as one per client.
Switch by name
Pick where it starts when you connect, then name a client and it works in that client’s workspace.
Acts as you
It works with your own access in each workspace, so your role there still applies.
No call data in ChatGPT
ChatGPT gets the building tools only. Calls, transcripts and numbers stay in Claude, Claude Code, Cursor and the Trillet dashboard.
Frequently asked questions
What is Trillet MCP?
Trillet’s Model Context Protocol server. It lets Claude, Claude Code, Cursor or Codex build, test and manage your Trillet voice agents, and ChatGPT build and edit them. It is hosted at mcp.trillet.ai and published on npm as @trillet-ai/mcp.
Which AI assistants work with it?
Claude and ChatGPT sign in to the hosted server at mcp.trillet.ai. Developers can run the npm package in Claude Code, Cursor or Codex.
How do I connect Claude or ChatGPT to Trillet?
Add mcp.trillet.ai/mcp as a connector, sign in with your Trillet account, pick the workspace it starts in and allow access. No API key is needed. In Claude Code, Cursor or Codex you can run the npm package with an API key and workspace ID instead.
What can ChatGPT do with Trillet?
Build and edit: create agents, choose voices, write prompts and welcome messages, set office hours, call settings, transfers and post-call fields, and create demo links. ChatGPT can’t buy numbers, place calls or read call transcripts; review calls in the Trillet dashboard or from Claude.
Can Claude make phone calls with Trillet?
Yes. Ask Claude for an outbound call and it places one with your agent after you confirm. It can also test an agent by text in the chat; that test is a real call record, so bookings and webhooks run for real.
Can one connection manage all our client workspaces?
Yes. The connection can act in every workspace you belong to. You pick where it starts; name another client and it switches. It works with your own access in each workspace.
Will it change our live agents?
Yes. Edits to an agent’s prompt and settings save to its live call flow straight away, so say exactly what you want changed. Buying or releasing a number, placing an outbound call, publishing a draft and deleting anything each wait for your confirmation.
Is this the same as connecting our agents to other MCP servers?
No. Trillet MCP lets your AI assistant work on Trillet. Separately, your agents can connect to other tools that expose their own MCP server, such as a CRM.
Build your next agent from a chat.
Book a demo and we’ll connect Trillet MCP to Claude and build an agent with you from a single request.