# Etherscan

> Use this tool when you need to access blockchain data across multiple chains, query account balances, transaction details, and contract data, or retrieve gas prices. It solves problems related to DeFi analysis, blockchain data monitoring, and portfolio tracking by providing a single API key for 50+ supported chains. With 19 specialized tools and flexible deployment modes, it offers a comprehensive interface for AI assistants to retrieve on-chain data, making it ideal for building applications that require programmatic access to blockchain information.

Canonical page: https://skillsregistry.net/skills/wrldrelief-etherscan  
JSON: https://api.skillsregistry.net/v1/skills/wrldrelief-etherscan

## Description

This MCP server provides blockchain data access through Etherscan's API V2, enabling AI assistants to query account balances, transaction details, block information, contract data, and gas prices across 50+ supported chains using a single API key. Built by WrldRelief using Go with the mark3labs/mcp-go library, it offers 19 specialized tools including multi-chain account balance retrieval, contract ABI and source code access, token balance queries, transaction history analysis, and gas oracle data, supporting both stdin/stdout and SSE server modes for flexible deployment. The implementation features comprehensive chain support from Ethereum and BSC to Layer 2 networks like Arbitrum and Polygon, robust error handling for API responses, and native token detection with proper symbol mapping, making it valuable for DeFi analysis workflows, blockchain data monitoring, portfolio tracking applications, and building AI assistants that need programmatic access to on-chain data without manual block explorer navigation.

## Trust

- **Trust score (0–1):** 0.65
- **Verification tier:** scanned
- **Last scanned:** 2026-09-01

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-09-01

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/wrldrelief-etherscan)
- **Repository:** <https://github.com/wrldrelief/etherscan-mcp-server>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "wrldrelief-etherscan"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/wrldrelief-etherscan` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/wrldrelief-etherscan/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt