Smithery
MCP Ecosystem
- Marketplace of 14,000+ hosted MCP servers with one-click connect
- Handles OAuth/credential plumbing automatically for MCP tool auth
- Connections reusable across Claude, GPT and other MCP clients
AI Agents & Automation (15)
15 free MCP servers, registries and toolkits and 0 more — pricing tier and real capabilities on every entry. No ads, no sponsored placement.
AllGeneral Autonomous AgentsWorkflow AutomationAgent Frameworks (Developers)Real-Time Voice AgentsBrowser & Computer-Use AgentsMCP EcosystemAgent Memory & RAG-as-a-Service
freemium
Composio
MCP Ecosystem
- Managed auth + tool-call infrastructure for agents across 250+ apps
- Free tier: 20,000 tool calls/month with community support
- Ships both MCP servers and native SDKs for major agent frameworks
Glama
MCP Ecosystem
- Indexes and security-scans thousands of MCP servers for compatibility/safety
- API gateway for connecting to MCP servers programmatically
- Free account tier plus paid gateway/enterprise options
Cloudflare MCP
MCP Ecosystem
- Build and deploy remote MCP servers directly on Cloudflare Workers with built-in OAuth
- Ships an Agents SDK for stateful, durable AI agents alongside MCP hosting
- Runs on Cloudflare's free-tier-eligible Workers platform, scaling to global edge
MCP Registry (Official)
MCP Ecosystem
- The canonical open-source specification and docs for the Model Context Protocol
- Reference server/client SDKs and the official server registry
- Backed across the ecosystem — Claude, ChatGPT, VS Code, Cursor, MCPJam all implement it
Zapier MCP
MCP Ecosystem
- Turns any of Zapier's 9,000+ app integrations into callable MCP tools for any AI client
- Pre-authenticated connections avoid per-app OAuth setup for agent builders
- Included on all Zapier plans (including free), billed against existing task quota
- Open protocol for agents from different vendors to discover and talk to each other
- SDKs in Python, JS, Java, .NET and Go
- Now hosted by the Linux Foundation
- Complements MCP for agent-to-agent communication
- Pythonic framework for building MCP servers and clients in a few lines
- Proxying, composition and auth helpers
- Open source, Apache-licensed
- Visual testing and debugging tool for MCP servers
- Call tools, browse resources and view logs interactively
- Runs locally via npx
- Reference MCP servers such as filesystem, git, fetch and memory
- Starting point for building your own servers
- Open source
- GitHub's official MCP server for repos, issues, PRs and Actions
- Works with Claude, Copilot, Cursor and other MCP clients
- Open source; needs a GitHub token
- Official Python SDK for MCP servers and clients
- Stdio, SSE and streamable HTTP transports
- Open source
- Official TypeScript SDK for MCP servers and clients
- Streamable HTTP, stdio and auth helpers
- Open source
- Fullstack framework for building MCP servers and MCP Apps for ChatGPT and Claude
- Client library to connect any LLM to MCP servers
- Open source
- Aggregates many MCP servers behind one endpoint with a web UI
- Namespaces, middleware and per-tool filtering
- Docker-based, self-hosted
- Free and open source
MCP Ecosystem — straight answers
What are the best free MCP servers, registries and toolkits?
Flocci AI Tools lists 15 MCP servers, registries and toolkits, ordered free tiers first: MCP Registry (Official), Agent2Agent (A2A) Protocol, FastMCP, GitHub MCP Server and MCP Inspector. All of them are free or have a free tier. Every entry states what it uniquely does, not a score.
Are there completely free MCP servers, registries and toolkits?
Yes — 10 of these are marked fully free with no paid plan attached: MCP Registry (Official), Agent2Agent (A2A) Protocol, FastMCP, GitHub MCP Server and MCP Inspector. The rest are freemium, trial or paid, and each row states which.
What should I look for in MCP servers, registries and toolkits?
Start with what you need to do: connect an AI assistant to your own tools and data. Then check the pricing tier, because "free" here means no paid plan at all while "freemium" means a free tier under paid plans. Every tool on this page lists both.
See the full list →Head-to-head comparisons
Agent2Agent (A2A) Protocol vs MCP Registry (Official)FastMCP vs MCP Registry (Official)GitHub MCP Server vs MCP Registry (Official)MCP Inspector vs MCP Registry (Official)MCP Python SDK vs MCP Registry (Official)Agent2Agent (A2A) Protocol vs FastMCPAgent2Agent (A2A) Protocol vs GitHub MCP ServerAgent2Agent (A2A) Protocol vs MCP Inspector
Free alternatives
Smithery alternativesComposio alternativesGlama alternativesCloudflare MCP alternativesMCP Registry (Official) alternativesZapier MCP alternativesAgent2Agent (A2A) Protocol alternativesFastMCP alternatives
Looking for a ranked shortlist instead? See the best free MCP servers, registries and toolkits.