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🦀 ClawHub

Crypto Analytics

by @solidgea

Multi-chain blockchain analytics for wallet balances, transaction history, and address validation. Supports 60+ EVM chains via Etherscan V2, plus Bitcoin and...

Versionv1.0.3

Downloads725

#crypto-defi #data #writing #legal #education

View on ClawHub →

TERMINAL

clawhub install crypto-analytics

📖 About This Skill

name: crypto-analytics slug: crypto-analytics version: 1.0.3 homepage: https://clawhub.com/skills/crypto-analytics repository: https://github.com/yourusername/crypto-analytics description: "Multi-chain blockchain analytics for wallet balances, transaction history, and address validation. Supports 60+ EVM chains via Etherscan V2, plus Bitcoin and Solana. Use to check wallet balances, view transactions, get transaction details, validate addresses, or list supported chains." changelog: "v1.0.3: Fixed privacy section to accurately describe local caching (may store queried addresses). Improved .env loading to only use workspace root (AGENTS.md/.git detection). v1.0.2: Published version before false-positive appeal. v1.0.1: Added missing 'tokens' command handler. Fixed CHAINS typo in get_wallet_tokens."

Crypto Analytics

Overview

A comprehensive multi-chain blockchain analysis tool using live API data:

EVM networks: 60+ chains via unified Etherscan V2 (Ethereum, Sepolia testnet, BSC, Polygon, Arbitrum, Base, Optimism, Avalanche, etc.)

Bitcoin: Via Blockchair API

Solana: Balance via public RPC (tx history requires external service)

Built-in rate limiting and 5-minute caching

No credentials needed for basic usage (API key increases Etherscan limits)

All commands return JSON with optional human-readable formatting.

Privacy & Data Handling

This skill respects your privacy and operates transparently:

External data collection: None. Only standard blockchain APIs receive your queries:

- api.etherscan.io (Etherscan V2) - blockchair.com (Blockchair) - Public Solana RPC endpoints

Local caching: API responses are cached for 5 minutes to respect rate limits. Cache files are stored in ~/.openclaw/cache/crypto-analytics/api_responses/ and may contain queried addresses, transaction hashes, and other public blockchain data you requested. Files are automatically expired and can be manually deleted. This data never leaves your machine.

Environment variables: Optionally reads ETHERSCAN_API_KEY from a .env file located in the OpenClaw workspace root. No other environment variables are accessed.

No subprocesses or dynamic code execution: Pure Python with requests library only.

You can audit the source code in scripts/crypto_api.py – it's straightforward HTTP + JSON.

Configuration (Optional)

Set ETHERSCAN_API_KEY to increase rate limits (free tier: 5 calls/sec). Get a key from https://etherscan.io/apis

export ETHERSCAN_API_KEY=your_key_here
Or add to ~/.openclaw/workspace/.env

Core Commands

`balance`
`[chain]`

Get native token balance for a wallet.

Parameters:

address - Blockchain address

chain (optional) - Chain identifier. Auto-detects from address format if omitted.

- EVM: ethereum, sepolia, bsc, polygon, arbitrum, base, optimism, avalanche, and more - Non-EVM: bitcoin, solana

Example:

crypto-analytics balance 0x742d35Cc6634C0532925a3b8D4C9db96C4b4Db45 ethereum

Output:

{
  "chain": "ethereum",
  "chainid": 1,
  "address": "0x742d35cc6634c0532925a3b8d4c9db96c4b4db45",
  "balance_wei": 1234567890000000000,
  "balance_native": 1.23456789,
  "formatted_balance": "1.234568 ETH"
}

`transactions`
`[chain] [limit=20]`

Get recent transaction history.

Parameters:

address - Wallet address

chain (optional) - Chain identifier (auto-detected if omitted)

limit (optional) - Maximum transactions to return (default 20, max 100)

Example:

crypto-analytics transactions 0x742d35Cc6634C0532925a3b8D4C9db96C4b4Db45 bsc 50

Output:

{
  "chain": "bsc",
  "chainid": 56,
  "address": "...",
  "count": 150,
  "transactions": [ /* array of tx objects */ ]
}

`tx`

Get full transaction details.

Parameters:

txhash - Transaction hash

chain - Chain identifier (required)

Example:

crypto-analytics tx 0x123abc... ethereum

Output:

{
  "chain": "ethereum",
  "chainid": 1,
  "txhash": "0x123abc...",
  "transaction": { /* full tx object */ }
}

`validate`

Check address validity and detect chain.

Parameters:

address - Address to validate

Example:

crypto-analytics validate bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh

Output:

{
  "valid": true,
  "chain": "bitcoin",
  "normalized": "bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh",
  "error": null
}

`chains`

List all supported blockchains with their specs.

Example:

crypto-analytics chains

`gas [chain=ethereum]`

Get current gas price estimates including Safe, Standard, and Fast rates, plus base fee (EIP-1559).

Parameters:

chain (optional) - Chain identifier (default: ethereum)

Example:

crypto-analytics gas ethereum

Output:

{
  "chain": "ethereum",
  "chainid": 1,
  "low": 20000000000,
  "standard": 50000000000,
  "fast": 80000000000,
  "base_fee": 15000000000,
  "timestamp": 1700000000,
  "formatted": "=== Gas Price Tracker ===\nSafe: 20.00 Gwei\nStandard: 50.00 Gwei\nFast: 80.00 Gwei\nBase Fee: 15.00 Gwei\nUpdated: 2023-11-14 10:00:00 UTC"
}

`token`
`[chain]`

Get ERC-20 token balance for a specific token contract, with symbol and formatted human-readable value.

Parameters:

address - Wallet address

token_contract - ERC-20 token contract address

chain (optional) - Chain identifier (auto-detected if omitted)

Example:

crypto-analytics token 0xYourAddress 0xA0b86991c6218b36c1d19D4a2e9bB0e3606EB48 ethereum

Output:

{
  "chain": "ethereum",
  "contract": "0xa0b86991c6218b36c1d19d4a2e9bb0e3606eb48",
  "owner": "0xYourAddress",
  "balance": 1000000,
  "symbol": "USDC",
  "name": "USD Coin",
  "decimals": 6,
  "formatted": "=== Token Balances ===\nUSDC (USD Coin)\n  Balance: 1.000000\n  Contract: 0xa0b86991c6218b36c1d19d4a2e9bb0e3606eb48\n"
}

`tokens`
`[chain] [limit=20]`

Get all ERC-20 token balances for a wallet by auto-discovering tokens from recent transfer history. Returns non-zero balances with symbols and decimals.

Parameters:

address - Wallet address

chain (optional) - Chain identifier (auto-detected if omitted)

limit (optional) - Maximum number of tokens to check (default 20)

Example:

crypto-analytics tokens 0xYourAddress ethereum 10

Output:

{
  "chain": "ethereum",
  "address": "0xYourAddress",
  "count": 2,
  "tokens": [
    {
      "contract": "0xa0b86991c6218b36c1d19d4a2e9bb0e3606eb48",
      "balance": 1000000,
      "symbol": "USDC",
      "name": "USD Coin",
      "decimals": 6
    },
    {
      "contract": "0xdac17f958d2ee523a2206206994597c13d831ec7",
      "balance": 500000,
      "symbol": "USDT",
      "name": "Tether USD",
      "decimals": 6
    }
  ],
  "formatted": "=== Token Balances ===\nUSDC (USD Coin)\n  Balance: 1.000000\n  Contract: 0xa0b8...\nUSDT (Tether USD)\n  Balance: 0.500000\n  Contract: 0xdac1..."
}

`spl-tokens`

Get SPL token accounts for a Solana wallet. Returns mint addresses and token amounts (human-readable).

Parameters:

owner - Solana wallet address (Base58)

Example:

crypto-analytics spl-tokens 7xKXtg2CW87d97TXJSDpbD5jBkheTqA83TZRuJosgAsU

Output:

{
  "owner": "7xKXtg2CW87d97TXJSDpbD5jBkheTqA83TZRuJosgAsU",
  "tokens": [
    {
      "mint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": 10.5,
      "decimals": 9
    }
  ],
  "formatted": "Owner: 7xKX...\\nToken count: 1\\n  EPjF...: 10.50000000\\n"
}

When to Use This Skill

Use crypto-analytics when you need to:

Check wallet balances across multiple blockchains

Investigate wallet activity and transaction patterns

Look up specific transaction details

Validate blockchain addresses

Determine which chains are supported

Integrate live blockchain data into OpenClaw automations

Example Scenarios

> "Check my ETH balance" > balance 0x... ethereum or auto-detect if address starts with 0x

> "How much BNB do I have on BSC?" > balance 0x... bsc

> "Show me recent transactions for this Bitcoin address" > transactions 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa bitcoin

> "Is this a valid address and what chain is it on?" > validate

> "What chains do you support?" > chains

> "Get details for tx 0xabc... on Arbitrum" > tx 0xabc... arbitrum

> "Check my USDC balance on Ethereum" > token 0x... 0xA0b86991c6218b36c1d19D4a2e9bB0e3606EB48 ethereum

> "Show all tokens I have on Ethereum" > tokens 0x... ethereum

> "What's the current gas price on Arbitrum?" > gas arbitrum

Implementation Notes

API Providers

Etherscan V2: Unified endpoint for 60+ EVM chains. Free tier: ~5 calls/sec, 5k-100k/day depending on chain. API key significantly increases limits.

Blockchair: Bitcoin, Litecoin, Dogecoin, etc. Free: 100 req/min, 4k/day.

Solana RPC: Public endpoints (rate-limited) for balances only.

Caching & Rate Limiting

TTL: 300 seconds (5 minutes)

Cache location: ~/.openclaw/cache/crypto-analytics/api_responses/

Rate delays: Enforced to stay within free tier limits

Batching: Multiple queries in same session use cache

Configuration

Set API keys in .env:

ETHERSCAN_API_KEY=YourEtherscanKeyHere

Key optional for low-volume usage but recommended.

See references/api_index.md for full API documentation and references/chains.md for chain specifications.

Limitations & Future

Current limitations:

Solana transaction history requires specialized indexer (Solscan API)

Solana token metadata (symbol, name) not available; only mint addresses are shown

No batch multi-address queries

Free tier rate limits apply

Planned enhancements:

Transaction tracing and money flow analysis

Contract ABI decoding for read calls

Additional chain-specific features

Enhanced Solana token metadata (via token list)

Resources

This skill bundles useful reference material:

references/chains.md - Chain specifications, address formats, explorers

references/api_index.md - API endpoints, parameters, examples

These files are loaded into context only when needed.

⚙️ Configuration

Set API keys in .env:

ETHERSCAN_API_KEY=YourEtherscanKeyHere

Key optional for low-volume usage but recommended.

See references/api_index.md for full API documentation and references/chains.md for chain specifications.

Crypto Analytics

📖 About This Skill

Crypto Analytics

Overview

Privacy & Data Handling

Configuration (Optional)

Or add to ~/.openclaw/workspace/.env

Core Commands

balance [chain]

transactions [chain] [limit=20]

tx

validate

chains

gas [chain=ethereum]

token [chain]

tokens [chain] [limit=20]

spl-tokens

When to Use This Skill

Example Scenarios

Implementation Notes

API Providers

Caching & Rate Limiting

Configuration

Limitations & Future

Resources

⚙️ Configuration

`balance`
`[chain]`

`transactions`
`[chain] [limit=20]`

`tx`

`validate`

`chains`

`gas [chain=ethereum]`

`token`
`[chain]`

`tokens`
`[chain] [limit=20]`

`spl-tokens`