Best MCP Servers for Local Business: 2026 Setup Guide

Part of the guide: Local Marketing Strategy

June 13, 2026·Nataliia· 7 min read All posts

Start with the hosted servers your tools already offer: Notion, Slack, Supabase and Google Calendar, Drive and Gmail. Add them to Claude as custom connectors (Free plan: one connector; Pro is $20 a month billed monthly). Use the local Filesystem server for documents on your own computer. Skip Google Drive, Slack, Postgres and Puppeteer packages from the old @modelcontextprotocol list: they are archived with no security updates.

An earlier version of this guide listed install commands such as server-google-calendar, server-notion and server-supabase. They do not appear in the official servers repository, so they have been removed. What follows was checked against vendor documentation on 25 October 2026.

7→

Reference servers still maintained

MCP servers repository

13↓

Reference servers archived

MCP servers repository

1→

Custom connectors on Claude Free

Claude Help Center

$20→

Claude Pro, billed monthly

Claude pricing page

Estimates for illustration; actual numbers vary.

What Is an MCP Server in Plain Terms?

MCP is an open standard for connecting AI applications to outside systems such as files, databases and tools. The official introduction compares it to a USB-C port for AI. An MCP server is the piece that sits in front of one tool and tells the AI what it can do there. If the idea is new, read what MCP is first.

There are two kinds. A remote server is hosted by the vendor and you sign in with OAuth. A local server runs on your computer. Most small businesses should prefer remote servers, because there is no file to edit and no code to run.

Which MCP Servers Are Worth Using for a Local Business?

The table covers the tools most local businesses already use. Status was checked on the date above.

Server	Type	Status (25 Oct 2026)	Sign-in	Good for
Notion	Remote, hosted by Notion	Supported by Notion	OAuth	Client notes, simple CRM, content calendar
Slack	Remote, `mcp.slack.com/mcp`	Supported; admin must approve the app	OAuth	Searching and posting in team channels
Supabase	Remote, `mcp.supabase.com/mcp`	Supported; intended for development	OAuth in browser	Building and querying a database
Google Calendar, Drive, Gmail	Remote, Google	Developer Preview	OAuth, Google Cloud project	Availability, files, email drafts
Filesystem	Local, reference server	Maintained	None, you list folders	Menus, price lists, documents on one computer
Google Drive, Slack, Postgres, Puppeteer (old packages)	Local	Archived, no security updates	Varies	Do not use

How Do You Connect a Hosted Server to Claude?

Claude calls these custom connectors. They are available on Free, Pro, Max, Team and Enterprise plans, and the Free plan is limited to one. On Pro or Max the path is Customize, Connectors, Add, then a custom connector: name it, paste the server URL, check the sign-in settings and click Add. On Team and Enterprise an Owner adds the connector first and members then connect individually.

Anthropic warns that custom connectors are not verified by Anthropic. Connect only to servers you trust, turn off tools you do not need, and be careful with "Allow always". During Research, Claude can call connector tools without asking, so disable tools that write data.

What Does Each Hosted Server Do?

Notion. Notion hosts its own server. After OAuth, Claude can search, read, create and update pages and databases your account can reach. Restricting which clients members may use needs the Enterprise plan.

Slack. The server can search messages, files and channels, read threads, and send or draft messages. It works only through directory-published or internal apps, and a workspace admin has to approve the app. That makes it a poor first choice for a solo owner.

Supabase. Setup is a browser sign-in, with no access token needed. Supabase says production projects can hold sensitive data, so scope the server with project_ref, turn on read_only=true, and keep manual approval of tool calls on. It also says not to give the server to customers. Our Supabase connector guide covers the database side.

Google Calendar, Drive and Gmail. Google documents one remote server per product, at calendarmcp.googleapis.com, drivemcp.googleapis.com and gmailmcp.googleapis.com. They are a Developer Preview, you need to join the program, and you must enable the APIs in a Google Cloud project and create an OAuth client. Treat this as a project for someone technical, not a five-minute install. For booking, see Claude and Google Calendar.

Should You Use the Local Filesystem Server?

Yes, if you keep documents on one computer. The maintained Filesystem server only reads and writes inside directories you list. Its entry in claude_desktop_config.json uses the command npx, with the arguments -y, @modelcontextprotocol/server-filesystem and then one folder path per allowed directory, for example /Users/username/business-docs.

The README says Node.js 24 or later is needed for npx, and on Windows the command is launched through cmd /c. Its write_file tool overwrites existing files, so point it at a copy of your documents, not your only copy.

Claude Desktop also offers extensions (Settings, Desktop app, Extensions) that replace manual JSON editing. Anthropic says Claude Desktop includes its own Node.js, so extensions need no separate install.

What Does This Cost? A Worked Example

All figures below except the Claude price are assumptions.

Assumption: a one-person salon already pays for Notion and Slack at its current plan and adds no new subscription.
Assumption: the owner connects Notion only, to look up client notes before each appointment.
Known price: Claude Pro is $20 a month billed monthly, or $17 a month billed annually ($200 up front).

Under those assumptions the new cost is the Claude plan: $20 a month, or $200 a year on the annual plan. If one connector is enough, the Free plan allows one custom connector, so the new cost could be $0. Whether the free plan has enough usage limits for daily work is not stated on the pricing page, so test before relying on it.

What Are the Risks?

Three are worth acting on. First, an archived server gets no security fixes; the repository states that no security guarantees are provided. Second, text inside your data can try to steer the AI. Supabase calls this prompt injection and recommends keeping manual tool approval on. Third, a connector acts with your permissions, so a connector to your Gmail can read what you can read. Start with read-only access, then add write access one tool at a time.

FAQ

Are MCP servers free?

The protocol is open source. Hosted servers are offered by the vendors, and their pricing is set by each vendor's own plan. This page did not verify vendor plan prices for Notion, Slack or Supabase, so check those plans yourself.

Do I need Claude Pro to use MCP?

No for remote connectors: Anthropic lists custom connectors on the Free plan, limited to one. Paid plans remove that limit.

Do I need to edit a JSON file?

Not for hosted servers: you add them in Claude's Connectors settings. JSON editing applies to local servers such as Filesystem.

Which old MCP packages should I stop using?

The repository lists AWS KB Retrieval, Brave Search, EverArt, GitHub, GitLab, Google Drive, Google Maps, PostgreSQL, Puppeteer, Redis, Sentry, Slack and SQLite as archived.

Can an MCP server see everything in my account?

It can reach what your sign-in allows. Limit it with read-only mode, a single project or folder, and by disabling tools you do not need.

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Nataliia

Local marketing strategist with 10+ years at global agencies — OMD, Dentsu, GroupM, and BBDO. Now helping small businesses get the same data-driven edge. Based in Europe, working with clients in the US, UK, Australia, and beyond.

About Nataliia

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Best MCP Servers for Local Business: 2026 Setup Guide

What Is an MCP Server in Plain Terms?

Which MCP Servers Are Worth Using for a Local Business?

How Do You Connect a Hosted Server to Claude?

What Does Each Hosted Server Do?

Should You Use the Local Filesystem Server?

What Does This Cost? A Worked Example

What Are the Risks?

FAQ

Are MCP servers free?

Do I need Claude Pro to use MCP?

Do I need to edit a JSON file?

Which old MCP packages should I stop using?

Can an MCP server see everything in my account?

Sources

Want this applied to your business?

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