MultiversXInstall

Overview

This node enables interaction with the MultiversX blockchain, focusing on inspecting smart contracts in the "Inspect Contract" operation. It allows users to:

• List all functions defined in a contract's ABI.
• Retrieve basic contract details such as address, name, build info, and types.
• Get detailed information about a specific function within the contract.

This is particularly useful for developers or integrators who want to explore and understand a smart contract's interface before executing or querying its functions. For example, you can verify available read-only and mutable functions, check input/output parameters, or confirm if a function requires ownership or token payments.

Practical scenarios include:

• Auditing a deployed contract’s capabilities.
• Preparing to call or query contract functions by understanding their signatures.
• Debugging or documenting smart contract interfaces.

Properties

Output

The output JSON structure varies depending on the selected inspection type:

• List All Functions
  Returns an object containing:

  • contractAddress: The inspected contract address.
  • totalFunctions: Number of functions in the ABI.
  • functions: Array of function objects with properties: name, mutability ("readonly" or "mutable"), inputs, outputs, and description.
  • readOnlyFunctions: Array of names of read-only (view) functions.
  • mutableFunctions: Array of names of functions that modify state.

• Contract Details
  Returns an object with:

  • contractAddress: The contract address.
  • contractName: Name from ABI or "Unknown".
  • buildInfo: Build metadata from ABI if available.
  • totalEndpoints: Number of functions/endpoints.
  • hasConstructor: Boolean indicating if constructor exists.
  • types: Object keys representing custom types defined in the ABI.

• Function Details
  Returns detailed info about the specified function:

  • contractAddress: Contract address.
  • functionName: Name of the function.
  • mutability: "readonly" or "mutable".
  • inputs: Array describing input parameters.
  • outputs: Array describing output parameters.
  • description: Documentation string if present.
  • payableInTokens: Array of tokens accepted as payment (if any).
  • onlyOwner: Boolean indicating if function is restricted to owner.

No binary data output is produced by this operation.

Dependencies

• Requires a valid API key credential for MultiversX wallet access to determine network environment (mainnet, testnet, devnet).
• Uses the MultiversX SDK libraries for ABI parsing and contract interaction.
• The contract ABI JSON must be provided and correctly formatted.
• Network endpoints are automatically selected based on the configured environment.

Troubleshooting

• Invalid ABI format error:
  Occurs if the provided ABI JSON is malformed or cannot be parsed.
  Resolution: Validate the ABI JSON syntax before inputting it.

• Function not found error:
  When requesting details for a function name not present in the ABI.
  Resolution: Use "List All Functions" inspection first to verify available function names.

• Missing Contract ABI:
  The node throws an error if no ABI is provided for inspection operations.
  Resolution: Always supply the correct ABI JSON for the target contract.

• Unsupported inspection type:
  If an invalid inspection type is selected, an error is thrown.
  Resolution: Choose one of the supported inspection types: listFunctions, contractDetails, or functionDetails.

Links and References

• MultiversX Official Documentation
• MultiversX Smart Contract ABI Specification
• MultiversX SDK GitHub Repository