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base

Query Base blockchain data with USD pricing via RPC and CoinGecko.

4|Updated Apr 19, 2026
Search Tags:#blockchain#ethereum#crypto#base#l2#on-chain data
One-click install
npx skills add https://github.com/ragnarokhaa/hermes --skill base-ragnarokhaa
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: base
Source: https://github.com/ragnarokhaa/hermes/tree/main/hermes-cerul-tech-news-package/hermes-cerul-tech-news-package/hermes-agent/optional-skills/blockchain/base
Command: npx skills add https://github.com/ragnarokhaa/hermes --skill base-ragnarokhaa

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires requests, urllib, json, argparse, and includes scripts (resource) components.

What problem does it solve?

This Skill provides a convenient way to query Ethereum L2 blockchain data, enriched with USD pricing, without requiring an API key. It facilitates tasks like wallet balance checks, token analysis, and transaction reviews.

Core Features & Use Cases

  • Wallet Portfolio: View ETH and ERC-20 token balances, including prices and total portfolio value in USD.
  • Transaction Details: Inspect transactions by hash for ETH transferred, gas used, and contract creation status.
  • Token Info: Access metadata of ERC-20 tokens, such as name, symbol, decimals, and market cap.
  • Gas Analysis: Get detailed gas analysis for ETH transfers, including gas prices and cost estimates.
  • Contract Inspection: Determine if an address is a contract and inspect contracts for interfaces and balance.
  • Whale Detector: Detect large ETH transfers on the network.
  • Network Stats: Monitor the latest block, gas price, base fee, and ETH price.
  • Price Lookup: Quickly check the price of any token by contract address or symbol.

Quick Start

To check the wallet balance of an Ethereum address, run the command python3 base_client.py wallet <address>.

Frequently Asked Questions about base

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I check Base L2 wallet balances with USD pricing?▼

You can check Base L2 wallet balances with USD pricing by querying ETH and ERC-20 token holdings through a Base RPC and CoinGecko API. This returns total portfolio values without requiring an API key.

What is the best way to detect large ETH transfers on the Base network?▼

The best way to detect large ETH transfers on the Base network is using a whale detector feature that monitors on-chain data. It identifies significant transactions by querying the Base RPC.

Do I need an API key to query Base blockchain on-chain data?▼

No, you do not need an API key to query Base blockchain on-chain data. The process requires only a Base RPC and the CoinGecko API to fetch real-time transaction details and token metadata.

Can I inspect ERC-20 token metadata and market cap without an API key?▼

Yes, you can inspect ERC-20 token metadata and market cap without an API key by querying the Base RPC for contract details. This retrieves token names, symbols, decimals, and uses CoinGecko for market cap.

How do I get detailed gas analysis for ETH transfers on Ethereum L2?▼

You get detailed gas analysis for ETH transfers on Ethereum L2 by inspecting transaction details through the Base RPC. This provides gas used, current gas prices, and cost estimates for the network.

How does contract inspection work for Base network addresses?▼

Contract inspection for Base network addresses works by querying the Base RPC to determine if an address is a contract. It inspects the deployed contract for available interfaces and returns the ETH balance.

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