Etherscan: MCP server, CLI and agent surfaces

Yes: Etherscan runs a public MCP server at mcp-keyless.etherscan.io that listed 17 tools to a client with no credentials on 4 November 2026. Examples: get_native_balance, get_transactions, get_internal_transactions. It speaks streamable-http, protocol 2025-11-25. Open servers are readable by any agent; writes still depend on each tool.

Fact sheet

Company	Etherscan
Domain	etherscan.io
Category	Developer Tools (assigned by this directory from the registry description)
MCP server	Verified (No authentication)
Tranco rank	5,489 on the list of 4 November 2026
Ora score	none: Ora returned no cached score for etherscan.io when asked on 5 November 2026
Company found through	the official MCP Registry
Last verified	4 November 2026

MCP server

Endpoint	`https://mcp-keyless.etherscan.io/mcp`
How it was found	listed in the official MCP Registry
Transport	streamable-http
HTTP status	200
Protocol version	2025-11-25
Server	etherscan-mcp 2.4.0
Capabilities	tools, resources
Tools	17
Resources	1
Prompts	0
Connected	4 November 2026, 20:01 UTC
Handshake time	1,219 ms over 1 attempt

Tools listed

17 tools

get_native_balance
get_transactions
get_internal_transactions
get_token_transfers
resolve_ens_name
get_contract_source
get_contract_abi
get_contract_creation
get_transaction_receipt_status
get_transaction_status
get_gas_oracle
get_block_by_timestamp
get_supported_chains
get_logs
get_transaction_by_hash
get_transaction_receipt
render_etherscan_widget

Connector log

4 connections on 4 November 2026, read-only methods only

19:56:08Z https://mcp.etherscan.io/mcp sent initialize result auth-required-no-oauth (HTTP 401) 807 ms
19:56:09Z https://mcp-keyless.etherscan.io/mcp sent initialize, notifications/initialized, tools/list, resources/list result verified (HTTP 200) 875 ms
20:01:46Z https://mcp.etherscan.io/mcp sent initialize result auth-required-no-oauth (HTTP 401) 1197 ms
20:01:47Z https://mcp-keyless.etherscan.io/mcp sent initialize, notifications/initialized, tools/list, resources/list result verified (HTTP 200) 1219 ms

Authentication

Auth type	No authentication

The sign-in route, step by step

Send the handshake to https://mcp-keyless.etherscan.io/mcp over streamable-http. Servers on the 2026-07-28 revision answer server/discover; older servers answer initialize.
Send tools/list, then resources/list and prompts/list if the capabilities name them.
Send no token. The connector sent none and the server answered, so any MCP client can read this list.
Calling a tool is a separate step this directory never takes.

See OAuth for MCP: client ID metadata documents and dynamic registration for how each route works.

CLI

No CLI is on record for Etherscan. The directory checks a package only where a source names one, so this is a floor: a company can ship a command line that no source read for this edition mentions. See shipping a CLI agents can use.

Other agent surfaces

Agent surfaces other than MCP and CLI
Surface	Result
OpenAPI file	The path answered with a web page, not an OpenAPI file.
WebMCP in the initial HTML	Not detected on the home page by the shared crawl.
MCP discovery file	The path answered with a web page, not the file. Not counted.
A2A agent card	The path answered with a web page, not the file. Not counted.
A2A agent card (older path)	The path answered with a web page, not the file. Not counted.
agents.json	The path answered with a web page, not the file. Not counted.
OAuth authorization server metadata	The path answered with a web page, not the file. Not counted.
NLWeb endpoint	Not checked in this edition.

Registry listings

Registry listings
Registry	Listed
Official MCP Registry	Yes: io.etherscan/etherscan-mcp
GitHub MCP Registry	No
awesome-remote-mcp-servers	No
Smithery	Not checked: Smithery's listing pages and search API were unavailable on 4 November 2026.
Glama	Not checked: Glama's API needs a key and attribution terms.