Bring Web3
to LangChain
Create your Vinkius account to connect Covalent to LangChain and start using all 10 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 Covalent MCP Server?
Integrate Covalent, the unified API for blockchain data, directly into your AI workflow. Access real-time and historical data across Ethereum, Polygon, Binance Smart Chain, and over 100 other supported networks using natural language.
What you can do
- Wallet Insights — Retrieve token balances, historical portfolio values, and transaction history for any wallet address.
- NFT Discovery — List NFT balances and metadata across supported chains.
- Transaction Auditing — Get full details and log events for specific transaction hashes.
- Network Monitoring — Check block details and monitor supported chain statuses.
How it works
- Connect the Covalent integration to your AI assistant.
- Authorize using your Covalent API Key (found in your dashboard at covalenthq.com).
- Query global blockchain data through intuitive conversation.
Who is this for?
- Web3 Developers — Quickly audit smart contract interactions and verify transaction logs.
- Crypto Investors — Track portfolio performance and monitor wallet activities across multiple chains.
- Data Analysts — Retrieve structured on-chain data for research and reporting via chat.
Built-in capabilities (10)
Resolves block hashes, parent hashes, timestamps, and transaction counts for the specified chain. Get details for a specific block height
Resolves block height lag, current sync status, and API availability across all supported networks. Get the current indexing status of all supported chains
Resolves liquidity pool addresses, token pairs, reserve amounts, and volume metrics for the specified DEX. List liquidity pools for a DEX on a specific chain
Resolves daily balances, asset valuations in USD, and historical price points for the specified wallet. Get historical daily portfolio value for a wallet address
Resolves NFT contract names, token IDs, metadata URLs, and image links across the specified blockchain network. Get NFT balances for a wallet address
Resolves contract addresses, ticker symbols, token decimals, and current balances (formatted and raw) for the specified wallet and chain. Get token balances for a wallet address on a specific chain
Resolves sender/receiver addresses, transfer values, and transaction timestamps for the specified wallet. Get historical token transfers for a wallet address
Touches raw log events, decoded event parameters, and gas consumption metrics boundary. Get full details and logs for a specific transaction hash
Resolves transaction hashes, block heights, timestamps, and log events for the specified wallet on the given chain. Get transaction history for a wallet address
Resolves chain IDs, human-readable names, and supported features (NFTs, Dex, etc.) for each blockchain. List all blockchains supported by Covalent
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Covalent through native MCP adapters. Connect 10 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.
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The largest ecosystem of integrations, chains, and agents. combine Covalent MCP tools with 500+ LangChain components
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Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
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LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
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Memory and conversation persistence let agents maintain context across Covalent queries for multi-turn workflows
Covalent in LangChain
Why run Covalent with Vinkius?
The Covalent 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 10 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 Covalent using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Covalent and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Covalent 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
Covalent for LangChain
Every request between LangChain and Covalent 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 get a Covalent API Key?
Log in to your Covalent dashboard at covalenthq.com and generate an API Key. You can use the free tier to get started.
Which blockchains are supported?
Covalent supports over 100 chains including Ethereum, Polygon, BSC, Avalanche, Fantom, and many Layer 2 solutions like Arbitrum and Optimism.
Can the agent send transactions?
No, this integration is for querying data only. It provides high-granularity visibility into on-chain activities but cannot execute writes or sign transactions.
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
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