Pricing Model
DA Builder uses a pay-per-use model with three cost components:Execution Gas
Charged based on your transaction’s gas usage. Intrinsic gas costs are shared with network participants, reducing per-transaction expense.- Each transaction pays for its own gas consumption
- Minimum transaction overhead (21k gas) is shared across aggregated transactions
- Large transactions pay more, small transactions pay less
- Fair cost distribution based on actual resource usage
Blob Gas
Charged per blob transaction based on blob usage. Each blob transaction pays for its own blob gas costs. Currently, DA Builder supports a single blob transaction per batch, but configurable options for blob transaction processing and batching with other transaction types are coming soon.Service Fee
Small fee for aggregation services. The majority of savings are passed back to you, with a portion retained by Spire Labs. Important: No Service Fee is charged if no savings are achieved. If your transaction cannot be aggregated, it is submitted directly at cost with no Service Fee.Cost Guarantees
DA Builder ensures savings whenever aggregation is possible:- Never increases costs: If aggregation isn’t possible, transactions are submitted at cost with no service fee
- Automatic savings: Costs are reduced automatically when transactions can be aggregated
- Transparent pricing: All costs are clearly calculated and deducted from your GasTank balance
How Costs Are Charged
Costs are automatically deducted from your account balance when transactions are included onchain:- Transaction is submitted and aggregated
- Transaction is included in an onchain block
- Gas usage is calculated for your transaction
- Costs are deducted from your GasTank balance
- Outstanding charges are tracked until settlement completes
Monitoring Costs
Track your costs using:dab_accountInfo- Check balance and outstanding charges- GasTank contract - View deposit history and balance
- Transaction receipts - See actual gas usage for included transactions
Cost Savings Example
The minimum transaction overhead (21,000 gas) is shared across all aggregated transactions:- Without aggregation: Full 21k gas minimum per transaction
- With 2 participants aggregating: ~10.5k gas per transaction (50% savings)
- With 10 participants aggregating: ~2.1k gas per transaction (90% savings)
Next Steps
- Monitor Account - Track your costs
- Transaction Aggregation - Understand how aggregation reduces costs
- Quick Reference - Contract addresses and endpoints