Quick Reference

Prerequisites

1. Deploy Proposer Contract

2. Submit EIP-7702 Transaction to associate your Proposer with your EOA

3. Fund GasTank with ETH to cover gas costs for your future transactions

RPC Endpoints

Environment	URL
Testnet	https://da-builder.holesky.spire.dev

Supported RPC Methods

Method	Description
eth_sendRawTransaction	Submit blob transactions
eth_getTransactionReceipt	Track transaction status

Common Error Codes

Error	Meaning	Solution
Account not found	Account not funded	Deposit funds to GasTank
Insufficient balance.	Low balance	Add more funds
Transaction not found	Transaction not yet included	Wait and retry
Account is already closing.	Account closure initiated	Wait for closure to complete

Transaction Lifecycle

1. Submit → Receive transaction ID

2. Poll → Check status with eth_getTransactionReceipt

3. Included → Get blockchain hash from receipt

4. Confirmed → Transaction on-chain

Cost Structure

• Blob Gas: Shared across aggregated transactions

• Execution Gas: Based on your transaction's gas usage

• Service Fee: Small aggregation fee

Support

Please reach out to us at [email protected] !