# Precompile registry (/docs/guides/evm/precompiles/registry)

| Property           | Value                                        |
| ------------------ | -------------------------------------------- |
| Implementation     | `PrecompileRegistry`                         |
| Solidity interface | `IPrecompileRegistry`                        |
| Address            | `0x0000000000000000000000000000000000000813` |
| Status             | Deployed                                     |

In v444, the registry reports the current operational availability of a whole
precompile through `isDisabled`. It does not report whether an individual
selector exists, is deprecated, or has a replacement.

## Interface [#interface]

```solidity
interface IPrecompileRegistry {
    struct PrecompileStatus {
        bool isDeprecated;
        bool isDisabled;
        address newPrecompile;
        bytes4 newSelector;
        string message;
    }

    function getPrecompileStatus(
        address precompile,
        bytes4 selector
    ) external view returns (PrecompileStatus memory);
}
```

The `selector` parameter and the `isDeprecated`, `newPrecompile`, `newSelector`,
and `message` result fields are reserved for future selector-lifecycle support.
In v444 those fields are not populated, and the selector is not interpreted.
Do not use this call to test whether a selector is supported; use the canonical
Solidity interfaces and JSON ABIs for selector discovery.

`AdminUtils.sudo_toggle_evm_precompile` is Root-only and is not exposed by this
precompile. The registry reports availability but does not grant callers
permission to change it.

The lifecycle model is described in
[Precompile design and lifecycle](/docs/guides/evm/precompile-design#discovering-status).

Source: [`registry.sol`](https://github.com/RaoFoundation/subtensor/blob/main/precompiles/src/solidity/registry.sol)