MCP for Web3 builders: Chainstack unified MCP server

AI agents, LLMs, coding copilots—whatever you call them—are becoming real collaborators. But they’ve been blind to what matters most: your infrastructure.

Chainstack MCP server fixes that. They give models structured access to live docs, RPC data, smart contract storage, and full on-chain state. It’s like putting your AI on blockchain steroids.

The way we write and ship code is evolving. With AI models embedded in IDEs and toolchains, development is no longer a solo process. But while AI can write code, summarize APIs, and generate test cases—it still can’t see what’s really happening on your infrastructure.

That changes now.

What is MCP?

The Model Context Protocol (MCP) is a new standard that allows AI agents to securely access external environments—documentation, APIs, infrastructure, and more.

Most LLMs are sandboxed. They don’t know anything about your dev stack unless you explicitly feed them the context. That’s a major limitation when working with fast-evolving systems like blockchain.

MCP removes that barrier. It allows models to retrieve relevant docs, run live queries, inspect on-chain state, and perform safe, read-only operations—on demand.

This turns AI from a code generator into a context-aware partner.

Chainstack unified MCP server

Everything is now in one place. The Chainstack MCP server at mcp.chainstack.com/mcp combines documentation search, platform management, and live RPC access into a single endpoint — no local setup, no separate installs.

Your AI agent can:

• search Chainstack documentation — RPC methods, deployment guides, code examples;
• deploy and manage Global or Trader nodes via the MCP server;
• make direct JSON-RPC calls to Ethereum, Solana, and all other chains available on the platform.

Available tools

No API key required:

API key required (get one at console.chainstack.com/user/settings/api-keys):

Connect in seconds

Quickest setup

Paste this into Claude Code, Cursor, or any MCP-compatible agent:

get mcp.chainstack.com

The agent will open the discovery page and handle all configuration steps automatically.

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "chainstack": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.chainstack.com/mcp"]
    }
  }
}

Fully quit Claude Desktop and relaunch. Full guide: How to connect Chainstack MCP server to Claude.

Claude Code

claude mcp add --transport http chainstack https://mcp.chainstack.com/mcp --scope user

Cursor

Add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "chainstack": {
      "url": "https://mcp.chainstack.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "chainstack": {
      "serverUrl": "https://mcp.chainstack.com/mcp"
    }
  }
}

Why this matters

AI tools are increasingly central to modern development. But their usefulness depends entirely on the quality of their context and access to the right tools.

Chainstack MCP provides that context—first through documentation, then through access to infrastructure. Models no longer hallucinate RPC methods or guess contract formats. They check the docs, validate with live calls, and help you make decisions based on real data.

This is how you move from prompt-based coding to AI-native development workflows.

Start building

The Chainstack MCP server is live at mcp.chainstack.com.

If you’re building with Claude, Cursor, Windsurf, or any MCP-enabled assistant — this is the missing link.

AI meets RPC. And the future of autonomous development starts here.

Power-boost your project on Chainstack

• Discover how you can save thousands in infra costs every month with our unbeatable pricing on the most complete Web3 development platform.
• Input your workload and see how affordable Chainstack is compared to other RPC providers.
• Connect to Ethereum, Solana, BNB Smart Chain, Polygon, Arbitrum, Base, Hyperliquid, Tempo, MegaETH, Monad, Plasma, Avalanche, Optimism, Scroll, Aptos, Cronos, Gnosis Chain, Kaia, Moonbeam, Celo, Aurora, TON, Ronin, and Bitcoin mainnet or testnets through an interface designed to help you get the job done.
• Fast access to blockchain archive data and gRPC streaming on Solana.
• To learn more about Chainstack, visit our Developer Portal or join our Telegram group. 
• Connect your AI agent to Chainstack in seconds using Chainstack MCP — give Claude, Cursor, Codex, Gemini, and Windsurf live access to blockchain data, node management, and docs.
• Are you in need of testnet tokens? Request some from our faucets. Sepolia faucet, Base Sepolia faucet, Solana devnet faucet, Hoodi faucet, BNB faucet, zkSync faucet, Scroll faucet, Hyperliquid faucet, Monad faucet, Amoy faucet, Plasma faucet, TON faucet.

Have you already explored what you can achieve with Chainstack? Get started for free today.