Model Context Protocol (MCP) is the fastest-growing AI extension standard of 2026. Instead of describing what you want Claude to do with your tools, MCP servers let Claude actually use those tools directly — querying your database, reading your files, calling APIs, and updating records without you copying data back and forth.
If you have Claude Desktop or Claude Code set up, you can add MCP servers in minutes. Here are 7 that deliver real business value.
1. Filesystem MCP Server
What it does: Gives Claude read/write access to a folder on your computer.
The official @modelcontextprotocol/server-filesystem server is the simplest MCP server and often the most useful. Point it at a project folder, and Claude can read your documents, generate new files, refactor code, and reorganize folder structures — all without you pasting content into the chat window.
| Capability | Detail |
|---|---|
| Read files | Markdown, text, JSON, CSV, code |
| Write files | Create and overwrite with confirmation |
| List directories | Navigate folder trees |
| Best for | Document workflows, code projects, content pipelines |
Install: npx @modelcontextprotocol/server-filesystem /path/to/folder
2. GitHub MCP Server
What it does: Lets Claude read repos, open issues, create PRs, and review code.
For development teams, the GitHub MCP server replaces the back-and-forth of pasting code snippets. Claude can read the actual file, understand the full context, and suggest diffs or open pull requests directly.
| Capability | Detail |
|---|---|
| Read files | Any file in any repo you have access to |
| Create issues | With full markdown body |
| Open PRs | Including branch creation |
| Review code | Line-level comments |
| Best for | Dev teams, code review, project tracking |
Install: npx @modelcontextprotocol/server-github (requires GITHUB_TOKEN env var)
3. PostgreSQL MCP Server
What it does: Connects Claude directly to your Postgres database for read queries.
Ask Claude questions in plain English and get answers from your real data — without writing SQL yourself. The server is read-only by default, so there is no risk of accidental data modification.
| Capability | Detail |
|---|---|
| Run SELECT queries | Natural language → SQL |
| Describe tables | Schema exploration |
| Join across tables | Multi-table analysis |
| Best for | Business reporting, data teams, ops dashboards |
Install: npx @modelcontextprotocol/server-postgres postgresql://user:pass@localhost/db
4. Brave Search MCP Server
What it does: Gives Claude live web search without leaving the conversation.
Claude's knowledge has a cutoff date. The Brave Search MCP server adds real-time search so Claude can look up current pricing, find recent news, check competitor pages, or verify facts — and then reason over the results in context.
| Capability | Detail |
|---|---|
| Web search | Current results via Brave API |
| Snippet extraction | Full result text |
| Rate limit | Free tier: 2,000 queries/month |
| Best for | Research tasks, competitor monitoring, news monitoring |
Install: Requires a free Brave Search API key at api.search.brave.com
5. Slack MCP Server
What it does: Reads channels, threads, and DMs, and can post messages.
Rather than copying Slack threads into Claude, this server lets Claude read the actual conversation history, understand the context, and draft a response or summarize a thread. Useful for staying on top of busy channels or writing weekly recaps.
| Capability | Detail |
|---|---|
| Read channels | Full history with threading |
| Post messages | To any channel you have access to |
| Search messages | Keyword and date filtering |
| Best for | Internal comms summarization, async team updates |
Install: Requires Slack Bot Token with appropriate scopes
6. Google Drive MCP Server
What it does: Browses, reads, and searches your Google Drive files.
Stop downloading docs to paste them into Claude. This MCP server lets Claude read Docs, Sheets, and PDFs directly from Drive, summarize content, extract data from spreadsheets, and generate new documents — all within one conversation.
| Capability | Detail |
|---|---|
| Read Docs | Full document text |
| Read Sheets | Cell data and named ranges |
| Search Drive | By filename or content |
| Best for | Document review, data extraction, report generation |
Install: Requires Google OAuth credentials (see MCP server repo for setup)
7. Puppeteer MCP Server
What it does: Gives Claude a headless browser it can control to visit and interact with web pages.
This is the most powerful — and most experimental — MCP server on this list. Claude can navigate to a URL, fill out forms, click buttons, and extract content from pages that require JavaScript to render. Useful for scraping dashboards, automating web-based workflows, or testing UI flows.
| Capability | Detail |
|---|---|
| Navigate URLs | Any public page |
| Click elements | Buttons, links, dropdowns |
| Fill forms | Text inputs, selectors |
| Extract content | DOM text, screenshots |
| Best for | Web scraping, UI testing, web-based form automation |
Install: npx @modelcontextprotocol/server-puppeteer
Choosing the Right MCP Servers for Your Business
Not every server belongs in every setup. Start with the ones that match your daily bottlenecks:
| Business Role | Recommended Servers |
|---|---|
| Developer | Filesystem, GitHub, PostgreSQL |
| Marketing | Brave Search, Google Drive, Filesystem |
| Operations | Slack, Google Drive, PostgreSQL |
| Sales | Brave Search, Slack, Google Drive |
| Solo founder | Filesystem, Brave Search, Google Drive |
How to Install MCP Servers in Claude Desktop
- Open
~/Library/Application Support/Claude/claude_desktop_config.json(macOS) - Add your server under
"mcpServers":
{
"mcpServers": {
"filesystem": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-filesystem", "/Users/you/Documents"]
}
}
}
- Restart Claude Desktop
- A plug icon appears in the chat interface when MCP servers are active
Next step: If you want to go further than individual MCP servers and build full multi-agent pipelines, see our guide on AI Agent Orchestration Patterns.
MCP servers are still maturing — expect the ecosystem to grow significantly throughout 2026. The servers above are stable and well-maintained. Start with one or two that address your biggest manual bottleneck and expand from there.
Want help designing a Claude + MCP setup for your business? Talk to the Evalics team.