Blockscout MCP Server
Query blockchain data from any EVM chain using Blockscout's MCP server — access blocks, transactions, addresses, tokens, and smart contracts through AI assistants.
Overview
The Blockscout MCP Server enables AI assistants to query blockchain data from any EVM-compatible chain using Blockscout, the open-source block explorer. AI models can retrieve block details, transaction data, address information, token balances, and smart contract interactions — making on-chain data accessible through natural language conversations.
Open Source:
Developed by Blockscout. Supports any EVM chain with a Blockscout explorer instance.
Key Features
Block & Transaction Data
Query block details, transaction histories, and gas metrics across EVM chains.
Address Lookups
Retrieve address balances, transaction history, token holdings, and contract interactions.
Token & Balance Queries
Look up ERC-20 token balances, NFT holdings, and token transfer histories.
Smart Contract Verification
Access verified contract source code, ABI data, and contract-level interactions.
Installation
{
"mcpServers": {
"blockscout": {
"command": "npx",
"args": [
"-y",
"@blockscout/mcp-server"
],
"env": {
"BLOCKSCOUT_API_URL": "https://<your-chain>.blockscout.com/api"
}
}
}
}
Supported Chains:
Works with any EVM chain running Blockscout. Use the appropriate Blockscout API URL for your chain (e.g., Ethereum, Polygon, Base, Optimism, Arbitrum, Gnosis Chain, etc.).
Common Use Cases
- On-Chain Research: Query transaction histories and wallet activities for blockchain analysis
- Token Analysis: Look up token balances, transfers, and holder information across chains
- Contract Verification: Access verified smart contract source code and ABIs for development
- Blockchain Monitoring: Track blocks, gas prices, and network activity through AI conversations
When to Use This Server
Blockscout's MCP server is the fastest way to give an assistant on-chain data without running a node or writing RPC calls. Any EVM chain that exposes a Blockscout explorer is reachable through one config:
- Wallet & token research — "What tokens does this address hold?" or "show the last 20 transactions" become natural-language queries instead of multi-line RPC calls.
- Contract development — Pull verified source code and ABIs for a contract you're integrating against, so the assistant builds against the real interface.
- On-chain monitoring — Track blocks, gas prices, and network activity for a chain you operate on, all from a chat session.
For lower-level EVM access (raw JSON-RPC, eth_getLogs, etc.) see Ethereum RPC Blockchain MCP; for wallet interaction and signing, see Thirdweb MCP.
Frequently Asked Questions
Sources
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