Do I need to install anything to use XTND | MCP | ONE?

No. XTND | MCP | ONE is published as a hosted endpoint, so a compatible client connects to it over the network.

How do I install XTND | MCP | ONE?

Point your client at the hosted endpoint https://mcp-one--xtnd.run.tools. No local install is needed.

Which transport does XTND | MCP | ONE use?

Streamable http. Your client has to support that transport to connect.

Where is the source code for XTND | MCP | ONE?

The publisher lists https://github.com/XTND-DYNAMICS/xtnd-mcp-one as the source repository.

Who publishes XTND | MCP | ONE?

It is published under manual, a community namespace tied to the GitHub account xtnd. Community servers are not reviewed before they appear in the registry.

XTND | MCP | ONE MCP server

Name: XTND | MCP | ONE
Author: xtnd

Model Context Protocol (MCP) server for one.com mailboxes. Full email management (IMAP/SMTP) for Claude and AI agents.

Install this server View source

63/100?Number 201 of 1,078 in Communication

source repositorytool list publishedupdated recentlyhosted endpointactive entryno credentials

How this score is calculated

HostedCOMMUNITY Communication

Details

Registry name: manual/mcp-one
Publisher: xtnd
Version: -
Distribution: Hosted. the publisher runs this server and your client connects to their URL over HTTP. Nothing to install, but your requests go to a third party.
Transports: streamable-http
Source repository: XTND-DYNAMICS/xtnd-mcp-one
Website: -
First published: 2026-08-28
Registry updated: 2026-08-28
Credentials required: -
Schema generation: manual

Hosted endpoints

Endpoint 1

URL: https://mcp-one--xtnd.run.tools
Transport: streamable-http
Authentication: token

Install XTND | MCP | ONE

Pick your client. The configuration below is generated from this server's published package and endpoint data.

Claude Code command line

Configuration file: .mcp.json or ~/.claude.json

Hosted endpoint

claude mcp add mcp-one --transport http https://mcp-one--xtnd.run.tools

Nothing to install. The client connects to the publisher's URL.

Check it worked: Run claude mcp list and check the server reports connected.

Official Claude Code MCP documentation

Cursor IDE

Configuration file: .cursor/mcp.json or ~/.cursor/mcp.json

Hosted endpoint

{
  "mcpServers": {
    "mcp-one": {
      "type": "http",
      "url": "https://mcp-one--xtnd.run.tools"
    }
  }
}

Nothing to install. The client connects to the publisher's URL.

Check it worked: The server appears under Settings, then MCP with a green dot.

Official Cursor MCP documentation

Claude Desktop desktop app

Configuration file: ~/Library/Application Support/Claude/claude_desktop_config.json or %APPDATA%\Claude\claude_desktop_config.json

Hosted endpoint

{
  "mcpServers": {
    "mcp-one": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp-one--xtnd.run.tools"]
    }
  }
}

Nothing to install. The client connects to the publisher's URL.

Quit the app completely and reopen it.

Check it worked: Look for the tools icon in the message composer.

Official Claude Desktop MCP documentation

Visual Studio Code IDE

Configuration file: .vscode/mcp.json or user settings.json under mcp

Hosted endpoint

{
  "servers": {
    "mcp-one": {
      "type": "http",
      "url": "https://mcp-one--xtnd.run.tools"
    }
  }
}

Nothing to install. The client connects to the publisher's URL.

Check it worked: Open the Copilot chat tools picker and confirm the server is listed.

Official Visual Studio Code MCP documentation

Codex CLI command line

Configuration file: ~/.codex/config.toml

Hosted endpoint

codex mcp add mcp-one --transport http https://mcp-one--xtnd.run.tools

Nothing to install. The client connects to the publisher's URL.

Check it worked: Run codex mcp list and check the server is present.

Official Codex CLI MCP documentation

More clients (9), including automation platforms

Cline IDE

Configuration file: cline_mcp_settings.json, reachable from the MCP Servers pane

Hosted endpoint

{
  "mcpServers": {
    "mcp-one": {
      "type": "streamableHttp",
      "url": "https://mcp-one--xtnd.run.tools"
    }
  }
}

Nothing to install. The client connects to the publisher's URL.

Check it worked: The server appears in the MCP Servers pane with its tool count.

Official Cline MCP documentation

Goose desktop app

Configuration file: ~/.config/goose/config.yaml

Hosted endpoint

extensions:
  mcp-one:
    type: streamable_http
    uri: https://mcp-one--xtnd.run.tools
    enabled: true

Nothing to install. The client connects to the publisher's URL.

Check it worked: Run goose session and confirm the extension loads.

Official Goose MCP documentation

LangChain agent framework

Install the MCP adapter package and construct a client in code

Hosted endpoint

client = MultiServerMCPClient({
    "mcp-one": {
        "url": "https://mcp-one--xtnd.run.tools",
        "transport": "streamable_http",
    }
})

Nothing to install. The client connects to the publisher's URL.

Check it worked: Print the loaded tool list before running the agent.

Official LangChain MCP documentation

Windsurf IDE

Configuration file: ~/.codeium/windsurf/mcp_config.json

Hosted endpoint

{
  "mcpServers": {
    "mcp-one": {
      "serverUrl": "https://mcp-one--xtnd.run.tools"
    }
  }
}

Nothing to install. The client connects to the publisher's URL.

Check it worked: The server appears in the Cascade plugin list.

Official Windsurf MCP documentation

Tools

15 tools, from the registry listing. A parameter marked with an asterisk is required. By intent: 5 answer and 10 act.

Intent says what a tool does with the world. Answer reads and returns information and changes nothing. Act changes state somewhere, by writing, creating, sending or deleting. Transact moves money, buys something or commits to a cost. A value marked declared is the publisher's own annotation on their own tool. A value marked inferred is this catalogue reading the tool name and description, and is not a claim by the publisher. Where neither settles it, the tool is left unclassified rather than guessed at.

Tool	What it does	Intent	Parameters
list_folders	List all mailboxes/folders in the one.com mail account with message and unread counts.	answer inferred	none
create_folder	Create a new folder or mailbox in the one.com mail account.	act inferred	name
rename_folder	Rename an existing mailbox/folder.	act inferred	newName, oldName
delete_folder	Delete a folder/mailbox from the one.com mail account.	act inferred	name
search_emails	Search for emails in one.com mailbox using filters (query, folder, sender, recipient, flags).	answer inferred	folder, from, limit, query, subject, to, unreadOnly
get_recent_emails	Retrieve the most recent emails from a mailbox folder with envelopes.	answer inferred	folder, limit
get_email_content	Fetch full email content by UID from a folder. Body is converted to clean Markdown.	answer inferred	folder, uid
get_email_thread	Retrieve the full conversation thread for a given email UID or Message-ID.	answer inferred	folder, uidOrMessageId
mark_emails	Mark emails as read, unread, flagged, or unflagged.	act inferred	action, folder, uids
move_emails	Move emails from a source folder to a destination folder.	act inferred	sourceFolder, targetFolder, uids
delete_emails	Delete emails by moving them to Trash (soft delete) or permanent expunge.	act inferred	folder, permanent, uids
send_email	Send a new outbound email via one.com SMTP server (send.one.com:465).	act inferred	bodyHtml, bodyText, subject, to
reply_email	Reply to an existing email with automated In-Reply-To and References headers.	act inferred	bodyText, folder, replyAll, uid
forward_email	Forward an existing email to new recipients with original header context.	act inferred	comment, folder, to, uid
create_draft	Create an email draft in the one.com Drafts folder without sending.	act inferred	bodyText, subject, to

Tool

What it does

Intent

Parameters

list_folders

List all mailboxes/folders in the one.com mail account with message and unread counts.

answer inferred

none

create_folder

Create a new folder or mailbox in the one.com mail account.

act inferred

name

rename_folder

Rename an existing mailbox/folder.

act inferred

newName, oldName

delete_folder

Delete a folder/mailbox from the one.com mail account.

act inferred

name

search_emails

Search for emails in one.com mailbox using filters (query, folder, sender, recipient, flags).

answer inferred

folder, from, limit, query, subject, to, unreadOnly

get_recent_emails

Retrieve the most recent emails from a mailbox folder with envelopes.

answer inferred

folder, limit

get_email_content

Fetch full email content by UID from a folder. Body is converted to clean Markdown.

answer inferred

folder, uid

get_email_thread

Retrieve the full conversation thread for a given email UID or Message-ID.

answer inferred

folder, uidOrMessageId

mark_emails

Mark emails as read, unread, flagged, or unflagged.

act inferred

action, folder, uids

move_emails

Move emails from a source folder to a destination folder.

act inferred

sourceFolder, targetFolder, uids

delete_emails

Delete emails by moving them to Trash (soft delete) or permanent expunge.

act inferred

folder, permanent, uids

send_email

Send a new outbound email via one.com SMTP server (send.one.com:465).

act inferred

bodyHtml, bodyText, subject, to

reply_email

Reply to an existing email with automated In-Reply-To and References headers.

act inferred

bodyText, folder, replyAll, uid

forward_email

Forward an existing email to new recipients with original header context.

act inferred

comment, folder, to, uid

create_draft

Create an email draft in the one.com Drafts folder without sending.

act inferred

bodyText, subject, to

Command line alternative

Could not determine. The available signals were not conclusive enough to say either way, so this is left open rather than guessed.

Repository signals

Not checked yet. Stars, licence, language and last commit date are read from the source host, and that pass has not run against this record.

Security, privacy and enterprise use

The publisher has not published a website, so there is no site to read policies from. For a server distributed only as source, the repository is the place to look.

Publisher

The publisher has not disclosed a website in their registry entry, so there is nothing to read a profile from.

Frequently asked questions

What does the XTND | MCP | ONE MCP server do?: Model Context Protocol (MCP) server for one.com mailboxes. Full email management (IMAP/SMTP) for Claude and AI agents.
Do I need to install anything to use XTND | MCP | ONE?: No. XTND | MCP | ONE is published as a hosted endpoint, so a compatible client connects to it over the network.
How do I install XTND | MCP | ONE?: Point your client at the hosted endpoint https://mcp-one--xtnd.run.tools. No local install is needed.
Which transport does XTND | MCP | ONE use?: Streamable http. Your client has to support that transport to connect.
Where is the source code for XTND | MCP | ONE?: The publisher lists https://github.com/XTND-DYNAMICS/xtnd-mcp-one as the source repository.
Who publishes XTND | MCP | ONE?: It is published under manual, a community namespace tied to the GitHub account xtnd. Community servers are not reviewed before they appear in the registry.

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XTND | MCP | ONE MCP server

Details

Hosted endpoints

Endpoint 1

Install XTND | MCP | ONE

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Endpoint 1

Install XTND | MCP | ONE

Claude Code command line

Cursor IDE

Claude Desktop desktop app

Visual Studio Code IDE

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Cline IDE

Goose desktop app

LangChain agent framework

Make automation platform

n8n automation platform

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