Install

Pick the AI app you use, then copy the settings.

Passed 2/3 checks · Runs on your computer

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Cantrip key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done
Paste these settings and save the file
Checking the commands · copy buttons appear once they pass
Paste the key only into the app’s field, never into a chat or to anyone
Done
Quit Claude and open it again
Done
Try it
Use Cantrip and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Cantrip or shows a Cantrip tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Cantrip yet

Cantrip runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Cantrip

Steps for Claude →You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for Cursor →You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for VS Code →You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time)

B · Others in Other that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Hostinger✓ ChatGPT
World Monitor✓ ChatGPT
Svelte MCP✓ ChatGPT

Works with Claude Code, with some setup first

You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Cantrip key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
Paste this command and press Enter
Checking the commands · copy buttons appear once they pass
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see Cantrip listed as connected
Done
Try it
Use Cantrip and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Cantrip or shows a Cantrip tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Cantrip key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Click this button to open Cursor
Checking the commands · copy buttons appear once they pass
Done
Fill in your key
In the Cantrip settings, CANTRIP_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Cantrip and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Cantrip or shows a Cantrip tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Cantrip key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Cantrip key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Click this button to open VS Code
Checking the commands · copy buttons appear once they pass
Done
Fill in your key
In the Cantrip settings, CANTRIP_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Cantrip and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Cantrip or shows a Cantrip tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Cantrip💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

Checking the commands · copy buttons appear once they pass

Claude Desktop (claude_desktop_config.json)

Checking the commands · copy buttons appear once they pass

Cursor (~/.cursor/mcp.json)

Checking the commands · copy buttons appear once they pass

VS Code (mcp.json)

Checking the commands · copy buttons appear once they pass

Values you fill in

CANTRIP_API_KEY secret required env
Your Cantrip API key

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account ozten, which owns the repo
! Caution
Still maintained
Code last changed 8 months ago, more than 6 months ago
✓ Pass
Has a licence
Uses MIT
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

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User reviews

No reviews yet

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Compared with others in Otheri

More stars than 86% of the other 19435 servers in this category
Published to the registry more recently than 2% of the other 19435 servers in this category
Basic checks equal to or better than 44% of the other 19435 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Cantrip safe?

It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: CANTRIP_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed 8 months ago, and the latest version (1.0.5) reached the registry 8 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: World Monitor, Claude Flow, Windmill

Others in the same category

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

World Monitor

Real-time global intelligence on conflict, markets, energy, trade, shipping and cyber. 104 tools.

by koala73Widely used★ 90.5KUpdated yesterday

Runs in the cloud✓ service owner · worldmonitor.app

How to connect

Claude Flow

AI orchestration with hive-mind swarms, neural networks, and 87 MCP tools for enterprise dev.

by ruvnetWidely used↓ 13.5K/wk★ 81.5KUpdated 14 months ago

Runs on your computer

Install

Windmill

Run Windmill scripts and flows and manage jobs, schedules, resources and variables.

by windmill-labsWidely used★ 18.6KUpdated yesterday

Runs in the cloud

How to connect

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

mcp-server-cantrip

Cantrip helps technical founders find their first customers with structured GTM workflows.

Nail your ICP — define ideal customer profiles, buyer pains, and value props
Research competitors — map the landscape and find where you can win
Get next actions — gap analysis tells you exactly what to work on, then does it for you

Works with Claude Code / Claude Desktop / Cursor — any MCP-compatible agent.

Quick start

Get your API key at cantrip.ai (settings)
Add the server:

claude mcp add cantrip -e CANTRIP_API_KEY=your-api-key -- npx -y mcp-server-cantrip

Try this prompt:

"Initialize a Cantrip project for my product: [describe yours in one sentence]"

Configuration

The Quick start command above covers Claude Code. Verify it worked with claude mcp list or the /mcp command inside a session.

Claude Desktop / Cursor / manual JSON

All MCP clients use the same JSON block. Add it to the appropriate config file:

Client	Config file
Claude Code (manual)	`~/.claude.json`
Claude Code (project-scoped)	`.mcp.json` in project root
Claude Desktop (macOS)	`~/Library/Application Support/Claude/claude_desktop_config.json`
Claude Desktop (Windows)	`%APPDATA%\Claude\claude_desktop_config.json`
Cursor	`.cursor/mcp.json` (project) or `~/.cursor/mcp.json` (global)

"mcpServers": { "cantrip": { "command": "npx", "args": ["-y", "mcp-server-cantrip"], "env": { "CANTRIP_API_KEY": "your-api-key" } } } }

Note: The -y flag is required — without it, npx prompts for confirmation which hangs over stdio.

Windows (not WSL): Use "command": "cmd" with "args": ["/c", "npx", "-y", "mcp-server-cantrip"].

Project-scoped with teams: Use "${CANTRIP_API_KEY}" in the env value so each developer sets the key in their shell profile.

Project Context (`.cantrip.json`)

Each project directory contains a .cantrip.json file that tells Cantrip which project to target:

"project": "my-saas" }

This file is created automatically by cantrip_init (new project) or cantrip_connect (existing project). The agent manages it — you don't need to create it manually.

Multiple projects on the same machine? Each project directory gets its own .cantrip.json. The agent switches context by working in the right directory.

Examples of How to use Cantrip

After connecting Cantrip, try these prompts in order:

"Initialize a Cantrip project for my product: [one sentence about what you're building]"
"Find my likely ICP and top 3 buyer pains."
"Research 5 competitors and tell me where I can win."
"Give me a one-week GTM plan."

Troubleshooting

Server not found / no tools appear:

Run claude mcp list (Claude Code) or /mcp inside a session to check connection status.
Make sure the config is in the right file — Claude Code uses ~/.claude.json or .mcp.json, not ~/.claude/mcp.json.

Server hangs on startup:

Ensure you have -y in the npx args. Without it, npx waits for interactive confirmation that can never arrive over stdio.

"Cannot reach Cantrip API" errors:

Verify CANTRIP_API_KEY is set in the env block of your MCP config.
Check that https://api.cantrip.ai is reachable from your network.

Windows "Connection closed" errors:

Use "command": "cmd" with "args": ["/c", "npx", "-y", "mcp-server-cantrip"].

Architecture

Agent (Claude, etc.) ── MCP protocol (stdio) ──> mcp-server-cantrip ── HTTPS POST ──> https://api.cantrip.ai

The MCP server is a thin translation layer. It converts MCP tool calls into {command, args, flags} JSON envelopes and POSTs them to the Cantrip API. Zero business logic — identical contract to the CLI and React UI.

Tools (17)

Setup

Tool	Description
`cantrip_connect`	Connect workspace to a project (reads/writes `.cantrip.json`)
`cantrip_status`	Check if the daemon is running
`cantrip_init`	Create a new project and auto-connect

Core Commands

Tool	Description
`cantrip_snapshot`	Project overview, drill into entity types
`cantrip_next`	List gap-analysis opportunities
`cantrip_next_prompt`	Generate a context-rich LLM prompt for an opportunity
`cantrip_next_run`	Spawn a background agent for an opportunity
`cantrip_history`	Query the audit trail

Review

Tool	Description
`cantrip_review`	List items pending review
`cantrip_review_accept`	Accept an inferred entity
`cantrip_review_reject`	Reject an inferred entity
`cantrip_review_resolve`	Resolve an escalation
`cantrip_review_dismiss`	Dismiss an escalation

Entity CRUD (generic)

Tool	Description
`cantrip_entity_list`	List entities of a type
`cantrip_entity_show`	Show entity detail
`cantrip_entity_add`	Create a new entity
`cantrip_entity_edit`	Edit an existing entity

Supported entity types: icp, pain_point, value_prop, experiment, channel, competitor, contact

License

MIT

Cantrip

What it does

Install

Install Node.js

Sign up and create a Cantrip key

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Sign up and create a Cantrip key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Sign up and create a Cantrip key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Sign up and create a Cantrip key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

Values you fill in

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Otheri

Common questions

Others in the same category

World Monitor

Claude Flow

Windmill

README from the maker

mcp-server-cantrip

Quick start

Configuration

Claude Desktop / Cursor / manual JSON

Project Context (.cantrip.json)

Examples of How to use Cantrip

Troubleshooting

Architecture

Tools (17)

Setup

Core Commands

Review

Entity CRUD (generic)

License

Project Context (`.cantrip.json`)