Solana Balance Checker & SPL Token Audit API

Solana account inspector for agents: check SOL balance of any wallet, inspect recent transactions (signature, slot, block time, error), and enumerate SPL token accounts (mints + amounts) in one GET. Endpoint: /audit?address=<base58> returns JSON from public Solana RPC. Use cases: pre-payment wallet verification, solana balance checker, SPL audit, token account inspector, treasury monitor. Read-only, no API key, instant response.