Summary
Plug this in when you need to query Ethereum blockchain data without managing API keys. It wraps 71 Etherscan API endpoints covering account balances, transaction history, smart contract ABIs, gas prices, and block data. The server is hosted by Junct and deterministically generated from Etherscan's API spec, so every tool maps directly to a real endpoint. Useful for building AI agents that need to check wallet activity, verify contract deployments, or pull on-chain metrics. Just point your MCP client at the streamable HTTP endpoint and start querying mainnet data.
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
Etherscan MCP Server
MCP server for Etherscan. Agent-ready API for Etherscan.
Hosted at etherscan-api.mcp.junct.dev/mcp. Free to use. No auth. No API key required.
Part of Junct — the agent-readiness layer for web3.
Quick Start
Add to your MCP client config (Claude Desktop, Cursor, Windsurf):
{
"mcpServers": {
"etherscan-api": {
"url": "https://etherscan-api.mcp.junct.dev/mcp",
"transport": "streamable-http"
}
}
}
About
This MCP server is deterministically generated from the Etherscan API specification. Every tool maps 1:1 to a real API endpoint — no hallucinated endpoints.
- Protocol: Etherscan
- Endpoint:
https://etherscan-api.mcp.junct.dev/mcp - Transport: Streamable HTTP
- Auth: None required
- Documentation: etherscan-api.mcp.junct.dev/llms.txt
Links
Keywords: Etherscan, MCP server, DeFi, AI agent, agent-ready API, crypto tools, Model Context Protocol
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Registryactive
TransportHTTP
UpdatedMar 19, 2026
