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State Cleaner is an extension for NEAR CLI that wipes a contract account’s on-chain state without deleting the account, so you can redeploy a fresh contract or free the storage staked NEAR.

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How it works

Under the hood, it deploys a small cleanup contract to the target account and, in a single transaction, calls its clean method with every key in the account’s state. The cleanup contract is left in place — it is not removed — until you deploy a new contract over it.
To learn more, check out the source code for both the State Cleaner tool and the cleanup contract.

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How to use

1

Install NEAR CLI

The State Cleaner is invoked through NEAR CLI, so you need it installed first. If you do not already have it installed, visit the NEAR CLI page.
2

Install the State Cleaner extension

Install it straight from the GitHub repository:
Requires a Rust toolchain ≥ 1.88.
3

Make sure the extension is on your PATH

Confirm it’s picked up with:
4

Run the command

Run the extension in interactive mode and follow the prompts:
Or pass everything in one go:
5

Use an RPC with a larger view-state cap

If the account’s state is large, you may hit:
Most public RPCs cap view_state responses (around 50 KB). Point NEAR CLI at an RPC with a higher cap:
Set the rpc_url value to a higher-capacity provider, then re-run the command. Intear’s RPCs work well:
  • Testnet: https://testnet-rpc.intea.rs
  • Mainnet: https://rpc.intea.rs
You can also update it without the prompts:
6

(Optional) Verify the bundled wasm

The wasm embedded in the extension isn’t built here — it’s NEAR’s prebuilt state-manipulation cleanup contract, vendored from near/core-contracts. The extension pins a specific upstream commit, recorded in extension/wasm/state_cleanup.wasm.provenance.To verify that the wasm in the tool matches the wasm from core-contracts, clone the tool and run the verify script. It re-downloads the upstream wasm at the pinned commit and confirms the bundled bytes match: