Bring Web3
to LangChain
Create your Vinkius account to connect Alchemy to LangChain and start using all 6 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Alchemy MCP Server?
Empower your AI agent to orchestrate your entire web3 research and blockchain auditing workflow with Alchemy, the comprehensive platform for decentralized data. By connecting Alchemy to your agent, you transform complex RPC querying into a natural conversation. Your agent can instantly retrieve wallet balances, audit NFT ownership, and query transaction receipts without you ever touching a block explorer. Whether you are conducting investment research or monitoring digital assets, your agent acts as a real-time blockchain analyst, ensuring your data is always precise and up-to-the-minute.
What you can do
- Wallet Auditing — Retrieve high-resolution balances for any Ethereum or compatible address, including native and ERC-20 tokens.
- NFT Oversight — Audit the NFT collection for specific owners to maintain a clear view of digital asset distribution and metadata.
- Transaction Intelligence — Query real-time transaction receipts to understand the status and outcome of blockchain events instantly.
- Network Discovery — Retrieve the latest block numbers to assist in regional and temporal blockchain planning.
- Operational Monitoring — Check API status to ensure your web3 research workflow is always operational across supported networks.
How it works
- Subscribe to this server
- Enter your Alchemy API Key and select your target Network
- Start managing your blockchain intelligence through Claude, Cursor, or any MCP-compatible client
Who is this for?
- Web3 Developers — monitor smart contract events and retrieve blockchain metadata straight from your workflow.
- Investors & Analysts — verify wallet balances and audit NFT portfolios without manual searching.
- Security Researchers — perform rapid audits of transaction receipts and identify relevant asset markers through natural language.
- Operations Leads — automate blockchain data querying to orchestrate cross-functional decentralized teams smoothly.
Built-in capabilities (6)
Check if the Alchemy service is operational
Get the number of the most recent block
Get all NFTs owned by a specific address
Get all ERC-20 token balances for a specific address
Get the receipt of a transaction by hash
Get the balance of an Ethereum address in wei
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Alchemy through native MCP adapters. Connect 6 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.
- —
The largest ecosystem of integrations, chains, and agents. combine Alchemy MCP tools with 500+ LangChain components
- —
Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
- —
LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
- —
Memory and conversation persistence let agents maintain context across Alchemy queries for multi-turn workflows
Alchemy in LangChain
Why run Alchemy with Vinkius?
The Alchemy connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 6 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Alchemy using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Alchemy and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Alchemy to LangChain through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Alchemy for LangChain
Every request between LangChain and Alchemy is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
How do I find my Alchemy API Key?
Log in to your Alchemy dashboard, create an app for your desired network, and you will find your API Key in the 'API Key' section. Copy and paste it below.
Which networks are supported?
Alchemy supports Ethereum, Polygon, Arbitrum, Optimism, and more. Ensure you provide the correct network slug (e.g., 'eth-mainnet') in the configuration.
Can the agent show NFT metadata?
Yes. The get_owned_nfts tool retrieves the list of NFTs owned by an address, including titles and token IDs from the metadata.
How does LangChain connect to MCP servers?
Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.
Which LangChain agent types work with MCP?
All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.
Can I trace MCP tool calls in LangSmith?
Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.
MultiServerMCPClient not found
Install: pip install langchain-mcp-adapters
Explore More MCP Servers
View all →
Endear Retail CRM
10 toolsEquip your AI agent to manage retail customers, track orders, and monitor clienteling notes via the Endear API.
123FormBuilder
12 toolsBuild and manage online forms, collect submissions, and organize workspaces with AI-powered form automation for any workflow.
ClearSale
5 toolsManage e-commerce fraud prevention via ClearSale — submit orders for analysis, monitor fraud scores, and track status updates directly from any AI agent.
ChargeOver
8 toolsManage recurring billing and invoicing via ChargeOver — track customers, monitor subscriptions, and analyze transactions directly from any AI agent.