Create, save and sent transactions and RPC calls without writing scripts. Manage accounts, keys, and RPC through a clean interface — your data stays local, always.
Features
Forget the CLI. Lantstool gives you a clean, visual interface for transactions, RPC calls, and managing accounts and keys.
Private keys, accounts, and all settings are stored exclusively in your browser's local SQLite database. Lantstool has no server side — only direct interaction with the blockchain.
Construct complex transactions with up to 100 actions. Take full control of every parameter, built-in validation, and save your setups as templates.
Connect to mainnet, testnet, or any localnet using your own public or private RPC with custom authorization headers. Presets for quick start included.
Each Space is an isolated environment for a project. Networks inside a space keep their own keys, accounts, transactions, and calls completely separate.
Share transactions and calls with your team via export/import. Easily load pre-built examples from the docs—like DAO or DEX interactions—to study and apply them in your workflow.
For smart contracts that expose an ABI, Lantstool automatically generates typed argument fields — no digging through contract source code for parameter names and types.
Access all major RPC call methods through a single adaptive form. It dynamically adjusts to your selection, displaying only the exact parameters needed for the call.
Key Generator for new ed25519 pairs. Unit Converter for NEAR/yoctoNEAR and other coins. Account Cleaner for accounts with large storage.
A Space is your isolated project container. Give it a name and pick NEAR Protocol.
Pick NEAR Protocol — currently the only supported chain. More are planned.
Choose a mainnet or testnet preset — or plug in any custom RPC with optional auth headers.
Store your keys and NEAR accounts locally to make them instantly available in any relevant field.
Create a transaction, fill in the inputs in the form constructor, send it, and inspect the result.