mirror of
https://github.com/NousResearch/hermes-agent.git
synced 2026-05-18 04:41:56 +00:00
feat: add EVM multi-chain skill (8 chains, 14 commands)
Adds a comprehensive EVM blockchain skill with 14 commands: - stats, wallet, tx, token, activity, gas, price (core queries) - compare: gas + prices across all 8 chains simultaneously - whale: scan recent blocks for large transfers (configurable min USD) - multichain: scan same wallet across all 8 chains in parallel - allowance: check dangerous ERC-20 approvals (Permit2, Uniswap, 1inch...) - decode: decode tx input data via 4byte.directory - ens: resolve ENS names <-> addresses (bidirectional) - contract: inspect contracts (proxy detection, ERC-20/721, bytecode size) Chains: Ethereum, BNB Chain, Base, Arbitrum One, Polygon, Optimism, Avalanche, zkSync Era Zero external dependencies. Python stdlib only (urllib, json, argparse, threading). Co-authored-by: Mibayy <mibay@clawhub.io>
This commit is contained in:
Mibayy
Teknium
parent
091d8e1030
commit
aa1e2edd35
2 changed files with 1622 additions and 0 deletions
203
optional-skills/blockchain/evm/SKILL.md
Normal file
203
optional-skills/blockchain/evm/SKILL.md
Normal file
|
|
@ -0,0 +1,203 @@
|
|||
---
|
||||
name: evm
|
||||
description: Query EVM blockchain data across 8 chains — wallet portfolios, ERC-20 tokens, transactions, gas tracker, whale detection, multi-chain scan, ENS resolution, allowance checker, contract inspection, and tx decoder. Supports Ethereum, BNB Chain, Base, Arbitrum, Polygon, Optimism, Avalanche, zkSync. Uses public RPCs + CoinGecko. No API key required.
|
||||
version: 1.0.0
|
||||
author: Mibayy
|
||||
license: MIT
|
||||
metadata:
|
||||
hermes:
|
||||
tags: [EVM, Ethereum, BNB, BSC, Base, Arbitrum, Polygon, Optimism, Avalanche, zkSync, Blockchain, Crypto, Web3, DeFi, NFT, ENS, Whale, Security]
|
||||
category: blockchain
|
||||
related_skills: [solana]
|
||||
requires_toolsets: [terminal]
|
||||
---
|
||||
|
||||
# EVM Blockchain Skill
|
||||
|
||||
Query EVM-compatible blockchain data across 8 chains with USD pricing.
|
||||
14 commands: wallet portfolio, token info, transactions, activity, gas tracker,
|
||||
network stats, price lookup, multi-chain scan, whale detection, ENS resolution,
|
||||
allowance checker, contract inspector, and transaction decoder.
|
||||
|
||||
Supports 8 chains: Ethereum, BNB Chain (BSC), Base, Arbitrum One, Polygon,
|
||||
Optimism, Avalanche (C-Chain), zkSync Era.
|
||||
|
||||
No API key needed. Zero external dependencies — Python standard library only
|
||||
(urllib, json, argparse, threading).
|
||||
|
||||
---
|
||||
|
||||
## When to Use
|
||||
- User asks for a wallet balance or portfolio on any EVM chain
|
||||
- User wants to check the same wallet across ALL chains at once
|
||||
- User wants to inspect a transaction by hash (or decode what it did)
|
||||
- User wants ERC-20 token metadata, price, supply, or market cap
|
||||
- User wants recent transaction history for an address
|
||||
- User wants current gas prices or to compare fees across chains
|
||||
- User wants to find large whale transfers in recent blocks
|
||||
- User asks to resolve an ENS name (vitalik.eth) or reverse-lookup an address
|
||||
- User wants to check if a contract has dangerous token approvals
|
||||
- User wants to inspect a smart contract (proxy? ERC-20? ERC-721? bytecode size?)
|
||||
- User wants to compare gas costs across chains before a transaction
|
||||
|
||||
---
|
||||
|
||||
## Prerequisites
|
||||
Python 3.8+ standard library only. No pip installs required.
|
||||
Pricing: CoinGecko free API (rate-limited, ~10-30 req/min).
|
||||
ENS: ensideas.com public API.
|
||||
Tx decoding: 4byte.directory public API.
|
||||
|
||||
Override RPC endpoint: `export EVM_RPC_URL=https://your-rpc.com`
|
||||
|
||||
Helper script path: `~/.hermes/skills/blockchain/evm/scripts/evm_client.py`
|
||||
|
||||
---
|
||||
|
||||
## Quick Reference
|
||||
|
||||
```
|
||||
SCRIPT=~/.hermes/skills/blockchain/evm/scripts/evm_client.py
|
||||
|
||||
# Network & prices
|
||||
python3 $SCRIPT stats # Ethereum stats
|
||||
python3 $SCRIPT stats --chain arbitrum # Arbitrum stats
|
||||
python3 $SCRIPT compare # Gas + prices ALL 8 chains
|
||||
|
||||
# Wallet
|
||||
python3 $SCRIPT wallet 0xd8dA...96045 # Portfolio (ETH + ERC-20)
|
||||
python3 $SCRIPT wallet 0xd8dA...96045 --chain bsc
|
||||
python3 $SCRIPT multichain 0xd8dA...96045 # Same wallet on ALL chains
|
||||
|
||||
# Tokens & prices
|
||||
python3 $SCRIPT price ETH
|
||||
python3 $SCRIPT price 0xdAC1...1ec7 # By contract address
|
||||
python3 $SCRIPT token 0xdAC1...1ec7 # ERC-20 metadata + market cap
|
||||
|
||||
# Transactions
|
||||
python3 $SCRIPT tx 0x5c50...f060 # Transaction details
|
||||
python3 $SCRIPT decode 0x5c50...f060 # Decode input data (4byte.directory)
|
||||
python3 $SCRIPT activity 0xd8dA...96045 # Recent transactions
|
||||
|
||||
# Gas
|
||||
python3 $SCRIPT gas # Gas prices + cost estimates
|
||||
python3 $SCRIPT gas --chain optimism
|
||||
|
||||
# Security
|
||||
python3 $SCRIPT allowance 0xd8dA...96045 # Dangerous ERC-20 approvals
|
||||
python3 $SCRIPT contract 0xdAC1...1ec7 # Contract inspection (proxy? standards?)
|
||||
|
||||
# ENS
|
||||
python3 $SCRIPT ens vitalik.eth # Name -> address + profile
|
||||
python3 $SCRIPT ens 0xd8dA...96045 # Address -> ENS name
|
||||
|
||||
# Whale detection
|
||||
python3 $SCRIPT whale # Large transfers (last 20 blocks, >$10k)
|
||||
python3 $SCRIPT whale --blocks 50 --min-usd 100000 --chain arbitrum
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Procedure
|
||||
|
||||
### 0. Setup Check
|
||||
```bash
|
||||
python3 --version # 3.8+ required
|
||||
python3 ~/.hermes/skills/blockchain/evm/scripts/evm_client.py stats
|
||||
```
|
||||
|
||||
### 1. Wallet Portfolio
|
||||
Native balance + known ERC-20 tokens, sorted by USD value.
|
||||
```bash
|
||||
python3 $SCRIPT wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045
|
||||
python3 $SCRIPT wallet 0xd8dA... --chain bsc --no-prices # faster
|
||||
```
|
||||
|
||||
### 2. Multi-Chain Scan
|
||||
Scans all 8 chains simultaneously for the same address using threads.
|
||||
```bash
|
||||
python3 $SCRIPT multichain 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045
|
||||
```
|
||||
Output: per-chain native balance + token holdings + grand total USD.
|
||||
|
||||
### 3. Compare (Gas + Prices)
|
||||
All 8 chains queried in parallel. Shows cheapest/most expensive chain.
|
||||
```bash
|
||||
python3 $SCRIPT compare
|
||||
```
|
||||
|
||||
### 4. Transaction Details & Decode
|
||||
```bash
|
||||
python3 $SCRIPT tx 0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060
|
||||
python3 $SCRIPT decode 0x5c504ed... # Shows human-readable function signature
|
||||
```
|
||||
Decode uses 4byte.directory to translate 0xa9059cbb -> transfer(address,uint256).
|
||||
|
||||
### 5. ENS Resolution
|
||||
```bash
|
||||
python3 $SCRIPT ens vitalik.eth # -> 0xd8dA... + avatar + social links
|
||||
python3 $SCRIPT ens 0xd8dA...96045 # -> vitalik.eth
|
||||
```
|
||||
|
||||
### 6. Allowance Checker (Security)
|
||||
Checks ERC-20 approvals granted to known DEX/bridge contracts.
|
||||
```bash
|
||||
python3 $SCRIPT allowance 0xYourWallet
|
||||
```
|
||||
Flags UNLIMITED approvals as HIGH risk.
|
||||
|
||||
### 7. Contract Inspector
|
||||
```bash
|
||||
python3 $SCRIPT contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 # USDC (proxy)
|
||||
python3 $SCRIPT contract 0xdAC17F958D2ee523a2206206994597C13D831ec7 # USDT (ERC-20)
|
||||
```
|
||||
Detects: proxy (EIP-1967/EIP-1167), ERC-20, ERC-721, ERC-165. Shows bytecode size and implementation address for proxies.
|
||||
|
||||
### 8. Whale Detection
|
||||
```bash
|
||||
python3 $SCRIPT whale # ETH, last 20 blocks, >$10k
|
||||
python3 $SCRIPT whale --blocks 50 --min-usd 50000 --chain bsc
|
||||
```
|
||||
|
||||
### 9. Gas Tracker
|
||||
```bash
|
||||
python3 $SCRIPT gas
|
||||
python3 $SCRIPT gas --chain polygon
|
||||
```
|
||||
Shows gwei price + USD cost for: transfer, ERC-20 transfer, approve, swap, NFT mint, NFT transfer.
|
||||
|
||||
---
|
||||
|
||||
## Supported Chains
|
||||
| Key | Name | Native | Chain ID |
|
||||
|-----------|----------------|--------|----------|
|
||||
| ethereum | Ethereum | ETH | 1 |
|
||||
| bsc | BNB Chain | BNB | 56 |
|
||||
| base | Base | ETH | 8453 |
|
||||
| arbitrum | Arbitrum One | ETH | 42161 |
|
||||
| polygon | Polygon | POL | 137 |
|
||||
| optimism | Optimism | ETH | 10 |
|
||||
| avalanche | Avalanche C | AVAX | 43114 |
|
||||
| zksync | zkSync Era | ETH | 324 |
|
||||
|
||||
---
|
||||
|
||||
## Pitfalls
|
||||
- CoinGecko free tier: ~10-30 req/min. Use `--no-prices` for faster wallet scans.
|
||||
- Public RPCs may throttle. Set EVM_RPC_URL to a private endpoint for production.
|
||||
- `wallet` and `allowance` only check known token list (~30 tokens per chain). Use a block explorer for complete token discovery.
|
||||
- `activity` scans recent blocks only (max 200). For full history, use Etherscan API.
|
||||
- `multichain` runs 8 parallel threads — can trigger rate limits on public RPCs.
|
||||
- ENS requires internet access to ensideas.com.
|
||||
- Tx decode requires internet access to 4byte.directory.
|
||||
|
||||
---
|
||||
|
||||
## Verification
|
||||
```bash
|
||||
# Should print current block, gas price, ETH price
|
||||
python3 ~/.hermes/skills/blockchain/evm/scripts/evm_client.py stats
|
||||
|
||||
# Should resolve vitalik.eth to 0xd8dA...
|
||||
python3 ~/.hermes/skills/blockchain/evm/scripts/evm_client.py ens vitalik.eth
|
||||
```
|
||||
1419
optional-skills/blockchain/evm/scripts/evm_client.py
Normal file
1419
optional-skills/blockchain/evm/scripts/evm_client.py
Normal file
File diff suppressed because it is too large
Load diff
Loading…
Add table
Add a link
Reference in a new issue