Whale Watch

Workflows

Monitor large crypto transactions across chains. Track whale wallets, detect unusual volume, alert on big moves. Supports Hedera, Ethereum, and Solana via public APIs.

Install

openclaw skills install whale-watch

Whale Watch — Large Transaction Monitor

Track big money moves across blockchains using free public APIs.

Hedera Whale Detection

# Transactions over 10,000 HBAR in last hour
curl -s "https://mainnet-public.mirrornode.hedera.com/api/v1/transactions?type=cryptotransfer&limit=100&order=desc" | \
  jq '[.transactions[] | select(.transfers[]?.amount > 1000000000000) | {id: .transaction_id, time: .consensus_timestamp, transfers: [.transfers[] | select(.amount > 1000000000000) | {account: .account, hbar: (.amount / 100000000)}]}] | .[:10]'

Track a Specific Wallet

WALLET="0.0.1234"
curl -s "https://mainnet-public.mirrornode.hedera.com/api/v1/transactions?account.id=$WALLET&limit=25&order=desc" | \
  jq '.transactions[] | {time: .consensus_timestamp, type: .name, result: .result}'

Ethereum Whale Watch (Etherscan — needs free API key)

# Large ETH transfers (register at etherscan.io for free key)
curl -s "https://api.etherscan.io/api?module=account&action=txlist&address=WALLET&sort=desc&apikey=YOUR_KEY" | \
  jq '.result[:10] | .[] | {hash: .hash[:16], value_eth: (.value | tonumber / 1e18), from: .from[:12], to: .to[:12]}'

Solana Large Transfers

# Recent signatures for a wallet
curl -s "https://api.mainnet-beta.solana.com" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getSignaturesForAddress","params":["WALLET_ADDRESS",{"limit":10}]}' | \
  jq '.result[] | {signature: .signature[:20], slot: .slot, time: .blockTime}'

Automated Monitoring

Add to your heartbeat for periodic whale checks:

## Whale Watch (every 2 hours)
curl -s "https://mainnet-public.mirrornode.hedera.com/api/v1/transactions?type=cryptotransfer&limit=50&order=desc" | \
  jq '[.transactions[] | select(.transfers[]?.amount > 1000000000000)] | length' 
# If > 0, investigate and alert

Tips

Hedera Mirror Node is free, no auth, generous rate limits
Etherscan free tier: 5 calls/sec, plenty for monitoring
Solana RPC: public endpoints work but can be slow under load
For real-time: consider WebSocket connections to RPC nodes