Estimate how long an Avalanche L1 validator’s fee balance will last
An L1 validator can lose active status when its P-Chain continuous-fee balance runs out. An alert should measure this balance against the observed fee rate without confusing it with the operator’s wallet balance.
Read the registration balance and validator fee state
Query platform.getL1Validator by validationID and platform.getValidatorFeeState at /ext/bc/P. Record the observed registration balance, fee-state time and price. The arithmetic below assumes one active registration and a constant illustrative fee in nAVAX per second.
balance_navax = 18_000_000
price_navax_per_second = 500
hours = balance_navax / price_navax_per_second / 3600
assert hours == 10
Recalculate as the network fee changes
At the example rate the balance covers ten hours. A changing dynamic rate can shorten or extend that time, so report it as an estimate timestamped to the observation. A wallet holding more AVAX does not automatically fund the registration. Check the accepted IncreaseL1ValidatorBalanceTx and the intended validation ID when verifying a top-up.