Lets your agent look up live onchain data from Etherscan: transactions, balances, token transfers and verified contracts on many chains.
by Etherscan· Crypto & Web3Unclaimed · Yours? Claim it
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About
Etherscan's own hosted MCP server. It connects your agent to live Etherscan API data, so you can ask in plain language about addresses, transactions, tokens and contracts and get answers grounded in real Etherscan API responses. One connection covers every chain Etherscan supports: the agent passes the chain ID (Arbitrum is 42161). What you can do with it - Summarise a transaction: sender, recipient, value, input data, and whether it succeeded - Look up an address's native balance, transactions, internal transfers and token transfers (ERC-20, ERC-721 and ERC-1155) - Read a verified contract's source code and ABI, and find who deployed it - Filter event logs by contract and topics over a block range - Check gas prices, find the block at a given time, and list the supported chains - Show results as an explorer-style Etherscan card How it connects Etherscan runs two official servers over Streamable HTTP. The install steps here use the keyless server, https://mcp-keyless.etherscan.io/mcp: it needs no API key, has 16 of the 21 tools and is rate limited. For every tool, connect https://mcp.etherscan.io/mcp instead, with your Etherscan API key as a bearer token (Authorization: Bearer <your API key>); calls there count toward your API plan, and you can create a free key with Etherscan. Five PRO tools need the authenticated server and a paid API plan: token balances with USD values, token info, a token's top holders, address name tags and labels, and the address that first funded an address. Good to know - Read-only: every tool reads public onchain data, and nothing signs or sends a transaction. - Etherscan says listings elsewhere that call themselves "Etherscan MCP" are unofficial and unaffiliated, so only give your API key to mcp.etherscan.io. - To guard against prompt injection, Etherscan recommends turning on your agent's confirmation prompts and taking care when you combine it with other MCP servers.
Once it’s added
“Give me a one-liner summary for this transaction: 0xa44757750f25d11d8d22434a68c39c6962a55ddf369ce202624950ada3080acf”
“Is 0xdAC17F958D2ee523a2206206994597C13D831ec7 verified? Summarize what the contract does and who deployed it.”
Before you add it
Reads only
Transactions, receipts and whether they succeeded · Balances, transactions and token transfers for an address · Verified contract source code, ABI and deployer · Event logs, gas prices and block times
From people who use it
Step by step
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Plugins people install alongside Etherscan MCP.
No reviews yet. Used Etherscan MCP? Say how it went.
Write a reviewA hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
Add to VS Codecopilot mcp add --transport http etherscan-mcp https://mcp-keyless.etherscan.io/mcp
A hosted server: nothing runs on your machine.
Add to Cursor
.cursor/mcp.json{
"mcpServers": {
"etherscan-mcp": {
"url": "https://mcp-keyless.etherscan.io/mcp"
}
}
}A hosted server: nothing runs on your machine.
claude mcp add --transport http etherscan-mcp https://mcp-keyless.etherscan.io/mcp
A hosted server: nothing runs on your machine.
codex mcp add etherscan-mcp --url https://mcp-keyless.etherscan.io/mcp
A hosted server: nothing runs on your machine.
~/.gemini/config/mcp_config.json{
"mcpServers": {
"etherscan-mcp": {
"url": "https://mcp-keyless.etherscan.io/mcp"
}
}
}A hosted server: nothing runs on your machine.
gemini mcp add --transport http etherscan-mcp https://mcp-keyless.etherscan.io/mcp
A hosted server: nothing runs on your machine.
A hosted server: nothing runs on your machine.
openclaw mcp add etherscan-mcp --url https://mcp-keyless.etherscan.io/mcp --transport streamable-http
A hosted server: nothing runs on your machine.
opencode mcp add etherscan-mcp --url https://mcp-keyless.etherscan.io/mcp
A hosted server: nothing runs on your machine.
hermes mcp add etherscan-mcp --url https://mcp-keyless.etherscan.io/mcp
~/.hermes/config.yaml{
"mcp_servers": {
"etherscan-mcp": {
"url": "https://mcp-keyless.etherscan.io/mcp"
}
}
}AuthorizationRequiredSecretBearer <ETHERSCAN_API_KEY>. Create a free key at https://etherscan.io/apis.Replace each <NAME> placeholder with your own value.
Scanned and passed · checked 6 h ago
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Nobody has shared how they use Etherscan MCP yet.
“List the 20 most recent ERC-20 token transfers for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Arbitrum.”
“Trace this transaction: show its internal transfers and whether it succeeded.”
“Show the native balance and 10 most recent transactions for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum and Arbitrum.”
“What are the current gas prices on Ethereum?”
Scanned on every change, and again when our rules improve.
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Passed
Safe to install in every agent it supports. Runs remotely on mcp-keyless.etherscan.io · answering.