Etherscan has launched a Claude Connector that links its blockchain data platform to Claude, the AI model built by Anthropic. The connector, publicly launched on October 21, 2026, allows users to query wallet and transaction data through natural language prompts.
Coverage across EVM chains
The connector covers on-chain information across more than 60 Ethereum Virtual Machine (EVM)-compatible chains. EVM-compatible chains run smart contracts using the same execution environment as Ethereum, enabling a single tool to read data from all of them.
Supported queries include wallet balances, transaction histories, gas prices, event logs, and contract verification. Token transfers are covered across three common standards: ERC-20, ERC-721, and ERC-1155. ERC-20 covers fungible tokens such as stablecoins, while ERC-721 and ERC-1155 handle NFTs and mixed collections of digital items.
The integration requires neither an API key nor an Etherscan account.
Read-only by design
The connector is strictly read-only. It retrieves information but does not sign transactions, move funds, or interact with wallets in any active way.
Responses include direct links back to Etherscan, allowing users to verify the underlying records themselves rather than relying solely on the AI's output.
Development timeline
The Claude Connector first appeared in Claude's marketplace directory in September 2026, weeks before the public launch. In August 2026, Etherscan launched a Model Context Protocol (MCP) server as part of its broader "Build with AI" initiative. An MCP server acts as a bridge, giving AI assistants a structured way to request data from an outside service.
Etherscan still offers a keyless version of that MCP server, which includes 16 tools with rate limits applied to manage usage. Developers seeking more can unlock additional PRO features through authenticated access on paid API plans.
The resulting structure is tiered: the Claude Connector serves users who want answers without setup, the keyless MCP server serves tinkerers, and paid API access serves teams that need heavier, more advanced usage.
