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Last updated: May 2026 · Reviewed by the AI for Zebras editorial team

Best MCP Servers in May 2026

We tested every production-ready MCP server we could install and benchmarked them across reliability, latency, scope of capabilities, and how they behave under real agent workloads. Here are the 10 we'd actually deploy.

Top picks for builders
GitHub MCP
9.7
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Zapier MCP
9.5
Get Started
Notion MCP
9.4
Get Started
1
GitHub MCP by GitHub (Microsoft) ★ Editor's Choice

The universal default — repo access, issues, PRs, and code search via the most reliable server in the ecosystem.

  • Full repo + code search
  • Issue and PR management
  • GitHub Actions integration
  • OAuth out of the box
9.7 Exceptional
Visit Site
2
Zapier MCP by Zapier Best for Automation

30,000+ actions across 8,000+ apps via a single server — the automation gateway for AI agents.

  • 30,000+ pre-built actions
  • OAuth handled per integration
  • Conditional logic and filters
  • Production-ready scaling
9.5 Exceptional
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3
Notion MCP by Notion Best for Knowledge

Make your workspace, pages, and databases addressable from Claude, Cursor, and ChatGPT.

  • Pages, databases, blocks
  • Semantic search across workspace
  • Comment + collaboration tools
  • First-party maintenance
9.4 Excellent
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4
Playwright MCP by Microsoft

Give your agents a real browser — official Playwright server with full automation and screenshot capture.

  • Full browser automation
  • Multi-tab, headless or visible
  • Network interception
  • Microsoft-maintained
9.3 Excellent
Visit Site
5
Supabase MCP by Supabase

Postgres queries, edge functions, auth, and storage as MCP tools — the serverless backend for agent apps.

  • SQL with type inference
  • Edge function invocation
  • Auth + storage access
  • Realtime subscription metadata
9.2 Excellent
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6
Context7 MCP by Upstash Rising

Real-time, version-aware library documentation — increasingly the default in code-agent setups.

  • 1,500+ libraries covered
  • Version-aware lookups
  • Sub-500ms median latency
  • Generous free tier
9.1 Excellent
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7
Slack MCP by Salesforce / Slack

Channel history, search, and thread context for agents that summarize incidents or surface team knowledge.

  • Channel + DM read
  • Workspace-wide search
  • Thread + context expansion
  • Permission-respecting
9.0 Excellent
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8
Linear MCP by Linear

Issues, projects, and cycle data — the cleanest API surface of any project-management MCP server.

  • Full issue + project CRUD
  • Cycle and roadmap reads
  • Real-time webhooks
  • Small attack surface
8.9 Very Good
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9
Brave Search MCP by Brave

Independent web search index — no Google tracking, no ad-skewed results, commercial-grade pricing.

  • Web, news, and image search
  • Independent (non-Google) index
  • 2K free queries/month
  • From $3 / 1K queries paid
8.7 Very Good
Visit Site
10
Stripe MCP by Stripe

Payments, billing, and customer data exposed as tools — the de-facto commerce primitive for agents.

  • Customers, charges, subscriptions
  • Invoice creation + refunds
  • Restricted-key support
  • Test-mode separation
8.6 Very Good
Visit Site

Compare the top MCP servers side-by-side

Server Best for Auth Hosting Pricing Score
GitHub MCP Code + repo access OAuth / PAT Local / remote Free 9.7 Visit
Zapier MCP Cross-app automation OAuth (per app) Hosted Paid plans 9.5 Visit
Notion MCP Knowledge bases Integration token Hosted Free w/ Notion 9.4 Visit
Playwright MCP Browser automation Local Local / container Free 9.3 Visit
Supabase MCP Backend (DB + functions) Service role key Hosted Free tier + paid 9.2 Visit
Context7 MCP Library docs lookup API key Hosted Free tier + paid 9.1 Visit

Frequently asked questions

What is an MCP server, exactly?

A Model Context Protocol (MCP) server is a small program that exposes capabilities — file access, API calls, database queries, tool execution — through a standard protocol that LLM-powered agents can call. Anthropic introduced MCP in November 2024 and it has become the de facto interface between agents and the outside world. One server can serve many agent clients (Claude Desktop, Cursor, Windsurf, ChatGPT, VS Code, etc.).

Do I need to pay to use MCP servers?

Most MCP servers are free. The cost comes from the underlying services they wrap — Zapier requires a Zapier subscription for non-trivial use; Notion MCP needs a Notion workspace; Supabase needs a Supabase project. The MCP server itself is almost always free open-source software or a free wrapper around an existing service you already pay for.

How risky are MCP servers from a security standpoint?

Risk varies enormously. Vendor-maintained servers (GitHub, Microsoft, Notion, Stripe, Supabase) have the lowest risk profile. Community servers vary in maintenance quality — security researchers disclosed an RCE in an MCP server with 150M+ downloads in April 2026, and roughly two-thirds of popular community servers have flagged security findings on systematic scans. Scope your tokens narrowly, prefer vendor-maintained servers in production, and audit any community server you install.

Which agent clients support MCP?

Most major AI coding and chat clients ship with MCP support: Claude Desktop, Claude Code, Cursor, Windsurf, VS Code (via GitHub Copilot), Cline, Zed, Continue.dev, Replit, and Goose. ChatGPT added support in early 2026. The protocol is genuinely cross-client at this point.

How is this list ranked?

See our scoring methodology for the full breakdown. In short: capability scope, reliability under load, maintenance quality, breadth of client support, and hands-on testing by our editorial team — combined into a single composite score from 1 to 10.

Our top 3 picks — in depth

Rank 1 · Editor's Choice

GitHub MCP

The universal default for any agent that touches code or repos.

9.7 Exceptional
Maintained by
GitHub / Microsoft
Pricing
Free
Auth
OAuth or PAT
Install
npx or hosted

GitHub MCP is the closest thing the ecosystem has to a default install. It exposes the full GitHub API surface — repo and code search, issue and PR creation and management, GitHub Actions, releases — through a single server maintained directly by GitHub. Permission scopes follow GitHub's standard model, so your agent only sees what the token allows. We've run it in production agents for months without a single reliability issue.

Why we ranked it #1: the combination of capability breadth, official maintenance, universal client support, and zero cost is simply not matched by any other server. The MCP servers that come closest are also vendor-maintained (Stripe, Supabase, Notion) but are scoped to single domains — GitHub MCP is both deep and broad.

Pros

  • Officially maintained by GitHub
  • Works in every major MCP client
  • Excellent permission scoping
  • Production-stable for months
  • Free for all reasonable usage patterns

Cons

  • Code search has API rate limits on heavy workloads
  • Write operations require careful scope review
  • Some new GitHub features lag the API by weeks
Visit GitHub MCP
Rank 2 · Best for Automation

Zapier MCP

The fastest path to giving an agent access to thousands of SaaS tools.

9.5 Exceptional
Maintained by
Zapier
Pricing
Zapier plan required
Auth
OAuth per integration
Coverage
30,000+ actions

Zapier MCP collapses the integration problem. Instead of installing twenty narrow MCP servers, you install one and get pre-built access to 30,000+ actions across 8,000+ SaaS tools. Zapier handles OAuth, retries, transformations, and the long tail of API quirks. For agents that need to span "send a Slack message, update a HubSpot record, append a row to a Google Sheet, post to LinkedIn" in a single workflow, this is the right primitive.

Where it shines: low-code agent workflows, internal automation prototypes, and anything that needs a SaaS tool Zapier already supports. Where it doesn't: latency-sensitive paths (an extra Zapier hop adds 200-800ms), or workflows where you want tool-shaped abstractions rather than Zapier-shaped ones.

Pros

  • Massive integration breadth in a single install
  • Zapier handles auth complexity
  • Conditional logic and filters built in
  • Production-grade scaling

Cons

  • Requires a paid Zapier plan for serious use
  • Higher latency than direct API access
  • Zapier-shaped abstractions can feel awkward
Visit Zapier MCP
Rank 3 · Best for Knowledge

Notion MCP

The best way to make an existing knowledge base addressable from any agent.

9.4 Excellent
Maintained by
Notion
Pricing
Free with Notion
Auth
Integration token
Capability
Read + write

If your team's documentation, specs, customer notes, or operational runbooks live in Notion — and for an enormous number of teams they do — the Notion MCP server is the single highest-leverage install you can make. Pages, databases, and blocks are exposed as queryable tools; semantic search across the workspace works; writes and comments are supported. The permission model uses Notion's existing integration tokens, so the agent's access matches what the integration is granted.

Where it shines: RAG-style retrieval over institutional knowledge, agents that update project trackers in Notion, customer-support agents that look up past tickets. Limitations: large workspace ingestion can hit context limits — pre-filtering search results before passing to the model matters.

Pros

  • Best-in-class knowledge access
  • First-party Notion maintenance
  • Workspace permissions respected
  • Works across all major clients

Cons

  • Tokens are workspace-scoped — careful sharing required
  • Large pages can exceed context windows
  • Limited to text/structured content (not Notion AI features)
Visit Notion MCP
2,481 builders compared MCP servers on this page in the last 30 days.

How we score MCP servers

Our score is a composite of three components, weighted to reflect what matters in production deployments.

Capability & reliability (50%)

Hands-on testing by our editorial team: capability scope, latency under load, error handling, breadth of client support, maintenance freshness.

Adoption signal (30%)

Install volume across major directories, vendor backing, mentions in production agent setups, GitHub activity for open servers.

Operator trust (20%)

Security posture, permission model, audit-log support, vendor accountability. Servers with disclosed vulnerabilities or absent maintenance score lower.

We accept advertising compensation from some brands listed on this page, which can influence position and presentation. Compensation does not change our scoring methodology. See the full methodology page for the long form.

In-depth reviews

Individual review pages for each server — covering setup, real-world performance, pricing, and trade-offs — are coming soon.

Covering: GitHub MCP · Zapier MCP · Notion MCP · Playwright MCP · Supabase MCP · Context7 MCP · Slack MCP · Linear MCP · Brave Search MCP · Stripe MCP