Best MCP Servers for Claude in 2026
MCP servers turn Claude from a chat assistant into an agent that reads your files, manages your GitHub repos, queries your database, and automates real workflows. These are the servers that deliver the most value in 2026, ranked by use case.
All servers on this list are open source, free to use, and compatible with Claude Desktop, Claude Code, and Cursor.
What are MCP servers?
MCP stands for Model Context Protocol, an open standard introduced by Anthropic that lets AI models communicate with external tools and data sources through a unified interface. An MCP server exposes a set of tools — functions Claude can call — and a set of resources — data Claude can read — over a standardized protocol.
Instead of you manually copying a GitHub issue into the chat window, Claude connects to the GitHub MCP server and reads it directly. Instead of pasting Figma screenshots, Claude reads the component tree data through the Figma MCP server and produces accurate code in one pass. MCP is what makes Claude useful in real production environments.
Top 10 MCP servers for Claude
Quick reference — full breakdowns by use case below.
| # | Server | Free |
|---|---|---|
| 1 | GitHub MCP Server | Free |
| 2 | Context7 MCP | Free |
| 3 | Supabase MCP | Free |
| 4 | Figma Context MCP | Free |
| 5 | Desktop Commander MCP | Free |
| 6 | Grafana MCP | Free |
| 7 | Atlassian MCP | Free |
| 8 | Semgrep MCP | Free |
| 9 | Google Workspace MCP | Free |
| 10 | AWS MCP Server | Free |
Best MCP servers for developers
These are the servers that have the highest daily-driver adoption among Claude Code and Cursor users in 2026.
GitHub MCP Server
by GitHub · 23K+ stars · MIT
The GitHub MCP Server is the most installed MCP server across all Claude clients, with an estimated installation rate above 80% among Claude Code users. It gives Claude full access to your repositories: creating and reviewing pull requests, managing issues, searching code, listing branches, and reading workflow run results.
Setup requires a GitHub Personal Access Token with the repo, read:org, and read:user scopes. Once configured, you can ask Claude to open a PR, triage issues by label, or search your entire codebase in natural language.
Context7 MCP Server
by Upstash · 33K+ stars · MIT · No API key required
Context7 solves one of the most common Claude Code frustrations: outdated documentation in the model's training data. When you ask Claude to use a specific version of React, Next.js, or Supabase, it fetches the exact, versioned docs in real time and injects them directly into the context before answering.
It requires no API key and no environment variables — just add it to your config and include use context7 in your prompt. It supports thousands of libraries including React, Next.js, Prisma, Drizzle, Supabase, Tailwind CSS, and more.
Supabase MCP Server
by Supabase · Apache-2.0
The official Supabase MCP server lets Claude query your Postgres database, run migrations, manage tables and RLS policies, and interact with Edge Functions. It connects to your Supabase project directly via a personal access token, giving Claude full read/write access to your backend without leaving the conversation.
Full setup guide →Desktop Commander MCP
by wonderwhy-er · 4.7K stars · MIT
Desktop Commander gives Claude full control over your local machine: running shell commands, reading and writing files, searching code with regex, and managing background processes. It requires no API key and works across macOS, Linux, and Windows. Use it when you need Claude to operate like a senior developer who can actually run code and modify your project files.
Note: Always review commands before confirmation. Use with caution in sensitive environments.
Full setup guide →Best MCP server for design and frontend
For teams that use Figma for design handoff.
Figma Context MCP
by GLips · 11K+ stars · MIT · Works with any Figma account
Figma Context MCP gives coding agents direct read access to Figma file data — component trees, layout properties, design tokens, spacing, and styles — without screenshots. Claude can read the design spec and produce accurate React, Tailwind, or HTML/CSS implementation in one shot. It works with any Figma account including the free tier and supports all major front-end frameworks.
Full setup guide →Best MCP servers for DevOps and monitoring
For teams that run infrastructure and need Claude to help with incident investigation, cloud resources, and observability.
Grafana MCP Server
by Grafana Labs · Apache-2.0
Search dashboards, run queries against Prometheus and Loki datasources, and investigate incidents directly from Claude. Works with Grafana Cloud and self-hosted instances.
Setup guide →AWS MCP Server
by AWS Labs · 6.7K+ stars · Apache-2.0
Interact with S3, EC2, Lambda, DynamoDB, IAM, and 20+ AWS services via existing AWS credentials and profiles.
Setup guide →Best MCP server for security
Semgrep MCP Server
by Semgrep · MIT · Free community rules
Semgrep MCP lets Claude scan your codebase for security vulnerabilities using Semgrep's static analysis engine, with support for 30+ languages and thousands of rules including OWASP Top 10. The server reports issues with fix suggestions that Claude can then apply. Free community rules are available without a paid plan.
Full setup guide →Best MCP servers for productivity
Atlassian MCP Server
by Sooperset · 3.3K stars · MIT
Create Jira issues, search Confluence, update sprint statuses, and manage epics — all from inside Claude. Supports Jira Cloud and self-hosted Server/Data Center.
Setup guide →Google Workspace MCP
by taylorwilsdon · MIT
Full access to Gmail, Calendar, Drive, Docs, and Chat through a single MCP server with OAuth authentication.
Setup guide →How to install MCP servers on Claude Desktop
All MCP servers on this list are installed via the same process. You only need to do this once per server.
- 1
Open your Claude Desktop config file
On macOS:
~/Library/Application Support/Claude/claude_desktop_config.json
On Windows:%APPDATA%\Claude\claude_desktop_config.json - 2
Add the server's config block
Each tool page on MCPIndex includes a ready-to-copy config_json block. Paste it inside the mcpServers object in your config file.
- 3
Add your API token or credentials
Most servers need an API token in the env block. Generate one from the provider's settings page and replace the placeholder value.
- 4
Restart Claude Desktop
Quit and reopen Claude Desktop. The server will connect on startup and its tools will appear in the conversation.
How to choose the right MCP servers
Not every server is worth installing for every workflow. Use this guide to decide.
Start with your bottleneck
Pick the one task that interrupts your Claude workflow most — copying GitHub issue URLs, pasting Figma designs, or running shell commands manually. Install the one MCP that eliminates that friction first.
Install 3 to 6 servers maximum
Every active MCP server adds tools to Claude's context window. Running too many at once dilutes focus. Install only what you use daily, and deactivate the rest.
Prefer official servers
Official servers from GitHub, Supabase, Grafana, and AWS are maintained by the vendor, better tested, and less likely to break on API updates. Use community servers only when no official option exists.
Frequently asked questions
What is an MCP server for Claude?▾
An MCP (Model Context Protocol) server is a standardized plugin that gives Claude access to external tools, data sources, and APIs. Instead of copying and pasting content into a chat window, Claude connects directly to services like GitHub, Supabase, or your local file system and takes real actions.
Which MCP server should I install first?▾
For most developers, the GitHub MCP Server is the best starting point. It unlocks repository management, pull requests, issues, and code search directly inside Claude with a simple Personal Access Token and has the highest installation rate among Claude Code users.
Do MCP servers work with Claude Desktop and Claude Code?▾
Yes. All MCP servers listed here are compatible with Claude Desktop, Claude Code, Cursor, and VS Code with the Copilot extension. The configuration is done once in claude_desktop_config.json and shared across clients.
Are all MCP servers free?▾
All servers in this list are free and open source. Some require free API tokens (like GitHub PAT or Supabase access token) but the servers themselves have no licensing cost.
How many MCP servers can I run at once?▾
There is no hard limit on the number of MCP servers you can configure. In practice, most developers run 3 to 6 servers simultaneously. Adding too many can create noise in Claude's context window, so it is best to install only what you actively use.
Is it safe to give Claude access to my machine via MCP?▾
MCP servers that access your local system, such as Desktop Commander, should be used with care. Review all commands before allowing execution and consider running Claude in a sandboxed environment for sensitive workloads. Servers with read-only access, like Context7, carry minimal risk.
Browse the full MCP tools directory
MCPIndex tracks the best MCP servers across every category — version control, databases, monitoring, productivity, security, and more. Every listing includes a ready-to-copy config block, setup steps, and FAQ.