Send4

Name: Send4
Author: send4ai

by send4aiversion 1.0.0i★ –iRuns in the cloud

Registry nameai.send4/mcp

Install

Overview

Description from the maker (original English)

Ask about and change your Send4 flows, campaigns, conversations, leads and calendar.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Docs, sheets & office work

Install

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

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.send4.ai/mcp

Run this in your terminal

claude mcp add --transport http send4 https://mcp.send4.ai/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "send4": {
      "url": "https://mcp.send4.ai/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "send4": {
      "type": "http",
      "url": "https://mcp.send4.ai/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.send4.ai/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

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

What it can do

The server asks you to sign in before it lists its tools.

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain send4.ai (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 95 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Docs, sheets & office worki

More stars than 0% of the other 2176 servers in this category
Published to the registry more recently than 92% of the other 2176 servers in this category
Basic checks equal to or better than 100% of the other 2176 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 Send4 safe?

It passed 3 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Agent-Native Calendar, Excel MCP Server, MCP Server for Excel

Alternatives

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

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

Agent-Native Calendar

by BuilderIO

Agent-Native Google Calendar - manage events, sync, and public booking

Runs in the cloud★ 7,620MITUpdated 2 months ago

Install

Excel MCP Server

by haris-musa

Lets AI create and edit Excel files itself, including formulas, charts and PivotTables, without Excel installed.

Runs on your computer★ 4,276MITUpdated 6 days ago

Install

MCP Server for Excel

by sbroenne

Excel automation for AI - Sheets, Power Query, DAX, VBA, Tables, Ranges and more. Windows only.

Runs on your computer★ 847MITUpdated 3 days ago

Install

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.

Send4 MCP server

Connect Claude, ChatGPT, Cursor, VS Code and other AI assistants to your Send4 workspace.

Ask about your flows, campaigns, conversations and usage in your own words, and let the assistant make the changes your workspace allows.

Help centre · Tools · Permissions · Troubleshooting · Security

The Send4 MCP server is hosted by Send4 at https://mcp.send4.ai/mcp. There's nothing to install or run: add the address to your assistant, sign in to Send4 in your browser, and choose what the assistant may do. This repository holds the setup guides, the tool list and the place to report a problem. It does not contain the server's code.

It's listed in the official MCP Registry as ai.send4/mcp, so an assistant that reads the registry can find it by name.

One-click setup

Pick your assistant. Cursor and VS Code install from the button; the others open a short guide.

Claude

claude.ai and Claude Desktop

ChatGPT

Business and Enterprise

Add to Cursor

One click, then sign in

Add to VS Code

Use from Copilot Chat

Claude Code

One command in the terminal

Le Chat

Mistral

Perplexity

Custom connector

Grok

Custom connector

Gemini CLI, Codex CLI and opencode: see Connect from the terminal .

Prefer to set it up by hand? Any assistant that supports remote MCP servers takes the address:

https://mcp.send4.ai/mcp

What you can do
Supported assistants
Before you start
How it works
Tools and permissions
Example workflows
Data and security
Admin notes: managing access
Troubleshooting
Security
Support and feedback

What you can do

Understand your flows: "What does my website form flow do?"
Find out what went wrong: "Why did yesterday's conversation from the quote form stop?"
See where people drop off: "Which flow lost the most people this week?"
Check your numbers: "How did last week compare with the week before?" or "How close are we to our SMS limit this month?"
Build and fix flows: "Build a draft flow that thanks a new lead, asks for their address and books a site visit."
Run campaigns: "Create a draft campaign for leads tagged *spring*, and check it before launch."
Work the inbox and calendar: "Which conversations are waiting for a person?" or "Find a free 30-minute slot on Thursday."

Supported assistants

Assistant	Where you add Send4	Guide
Claude (claude.ai, Claude Desktop)	Customize → Connectors (Pro, Max), or an owner under Organization settings → Connectors (Team, Enterprise)	Connect Claude
Claude Code	`claude mcp add --transport http send4 https://mcp.send4.ai/mcp`	Connect Claude
ChatGPT	`chatgpt.com/plugins` → Add custom MCP server (Business, Enterprise)	Connect ChatGPT
Grok	`grok.com/connectors` → New Connector → Custom	Connect Grok
VS Code (GitHub Copilot)	The button above, or MCP: Add Server → HTTP	Connect VS Code
Cursor	The button above, or `~/.cursor/mcp.json`	Connect Cursor
Le Chat	Intelligence → Connectors → Add Connector	Connect Le Chat
Perplexity	Account settings → Connectors → + Custom connector	Connect Perplexity
Gemini CLI, Codex CLI, opencode	One or two commands	Connect from the terminal

Another assistant should work too if it connects to a remote MCP server over Streamable HTTP and signs in through your browser (OAuth with dynamic client registration).

Before you start

A plan that includes it. Every paid plan does, and so does the 14-day trial once a card is on file. Starter has no campaigns, so campaign tools aren't offered there.
A Client Admin switches it on. In Send4, open Settings → Integrations → AI assistants and turn on Allow AI assistants under Workspace access.
You sign in as yourself. Each person connects with their own Send4 login.

How it works

flowchart LR

A["Your assistant Claude, ChatGPT, Cursor…"] -- "MCP over HTTPS" --> B["mcp.send4.ai/mcp"] A -. "first time: sign in and choose what it may do" .-> C["app.send4.ai"] B --> D["Your Send4 workspace as you, with your role"]

You add the address to your assistant.
You sign in to Send4 in your browser. Send4 shows the account you're signed in to and the choices your role and your workspace allow. You tick what this assistant may do and select Connect.
The assistant asks Send4 for its tools. It only hears about the tools this connection can use.
You ask in your own words. The assistant picks the tools, and Send4 runs each one as you: your workspace, your role, your choices.

The workspace always comes from your sign-in. An assistant can't point a tool at another workspace.

Tools and permissions

Every connection can read. Each kind of change is a separate permission, off until a Client Admin allows it for the workspace and you tick it when you connect.

Permission	What it allows
Read flows, runs, campaigns and usage	Every connection has this. Reads your flows, runs, campaigns, analytics and plan usage, and changes nothing. Phone numbers and email addresses are masked.
Read conversation messages	What customers and the AI said to each other, and the details a flow collected.
Build and change flows	Create flows, change their cards, rehearse them and switch them on.
Create and launch campaigns	Create campaigns, add and tag leads, and launch, pause or cancel a campaign.
Reply to customers and manage conversations	Reply, text someone first, assign, take over from the AI, and book, move or cancel meetings.
Invite and manage team members	Invite managers and agents, change their role, and deactivate them.
Create email addresses	Create new email addresses for the workspace on Send4.

All tools

Open a group to see its tools. Each name links to that tool's full definition in tools/: its description, its inputs and its safety hints, exactly as your assistant receives them.

Reading your workspace · 26 tools

For every role

Tool	What it does
`get_context`	Which workspace and person this connection belongs to, what it was granted, and what it wasn't.
`list_conversations`	Your inbox, filtered as on the Conversations page, without the messages.
`list_leads`	Your leads and tags, filtered as on the Leads page.
`list_meetings`	The meetings on your Send4 calendar.
`find_meeting_times`	The free times for a customer, or the times a meeting could move to. Nothing is booked.
`list_members`	The people in your workspace. A Client Admin sees their details, and anyone else sees names.
`list_channels`	Your sending numbers and mailboxes, and whether a campaign can send from each.
`get_performance`	Conversations started, replies, details collected, bookings and cost over time.
`get_message_usage`	Messages and SMS parts sent and received, their cost, and your monthly SMS limit.

For Client Admin and Client Agent

Tool	What it does
`list_flows`	Your flows, with their status and what starts them.
`read_flow`	One flow in full, with its cards, settings and wiring.
`check_flow`	Everything the flow builder would flag on a flow.
`list_card_types`	Every type of card a flow can use.

| describe_card_type | What one type of card does and which settings i

Only the beginning is shown; read the rest in the repo

Send4

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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

Compared with others in Docs, sheets & office worki

Common questions

Alternatives

Agent-Native Calendar

Excel MCP Server

MCP Server for Excel

README from the maker

One-click setup

Contents

What you can do

Supported assistants

Before you start

How it works

Tools and permissions

All tools