RPC Troubleshooting
Solana getTransaction Meta: Decode innerInstructions and err
Decode a confirmed Solana transaction's meta object, fold innerInstructions back onto outer instructions, and attribute failures to the correct program.
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147Latest articles
Network & Protocol Guides
Sui RPC Transaction Effects: Parsing objectChanges and balanceChanges
A practical guide to reading Sui transaction effects over JSON-RPC, parsing objectChanges and balanceChanges, and reconciling a digest against what actually happened on-chain.
Read articleRPC Troubleshooting
Solana sendTransaction Preflight: Error Handling and Safe Retries
A production playbook for Solana sendTransaction preflight: parameter contract, error taxonomy, idempotent retries, and blockhash expiry handling.
Read articleInfrastructure & Operations
Polkadot system_health and system_syncState: Node Health over RPC
Build a composite Polkadot node health probe from system_health, system_syncState and system_peers, with a runnable @polkadot/api example and a fill-in results table.
Read articleIntegration & Development
Hyperliquid Order Status and User Fills over the Info API
Read Hyperliquid order and fill state from the unauthenticated /info endpoint and reconcile userFills, historicalOrders, and orderStatus into one lifecycle view.
Read articleNetwork & Protocol Guides
Bittensor Subnet Tempo, Epochs, and Emission over RPC
Read a Bittensor subnet's clock — tempo, epoch index, blocks since last step, and emission — directly from a Subtensor node over JSON-RPC.
Read articleNetwork & Protocol Guides
Ethereum Blob Transactions over RPC: EIP-4844 Type-3 Mechanics
A practical RPC-layer guide to sending, reading, and reconciling EIP-4844 type-3 blob transactions, including blob gas accounting and sidecar availability.
Read articleIntegration & Development
Ethereum MEV Bundles: eth_sendBundle RPC Mechanics
How Ethereum bundles differ from transactions, how to submit them to a builder over JSON-RPC, and how to diagnose the three distinct reasons a bundle is not included.
Read articlePerformance & Optimization
Solana Jito Bundles over RPC: Tips, Atomicity, and Failure Diagnosis
A technical deep-dive into Jito bundle mechanics, tip instructions, slot targeting, and a reproducible method for diagnosing why a bundle did or did not land.
Read articleIntegration & Development
Hyperliquid Vault Equity over the Info API
Read Hyperliquid vault state and account vault positions over the info API, reconcile shares against total value, and derive share-price performance instead of raw equity.
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