Deploy Hello World Contract on Wire Testnet

Overview

This tutorial demonstrates how to deploy a simple hello-world smart contract on the Wire Testnet. We’ll create a new contract account, build and deploy the contract, and then invoke its action both from the Wire Hub and via the command line using clio.

Prerequisites

• Before proceeding forward, ensure that you have completed Getting Started section and that you have followed Getting Started Documentation Diagram.
• This page assumes you are familiar with Smart Contract Basics.

https://www.youtube.com/embed/Vf__2VglC5U

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Steps

1. Connect to the Wire Hub & Create Your Wire Testnet Account

• Open Wire Hub in your browser.
• Connect your wallet (e.g., MetaMask).
  • Once connected, the Hub should display your account’s public address.
• Create your on-chain account in the Wire Testnet Explorer:
  • You’ll be prompted to sign a message in MetaMask to retrieve your public key.
  • After signing, the system creates a new user account associated with that public key.

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2. Request a Developer Contract Policy

• Open the Node Owner Dashboard.

• Request Developer Contract Policy for a new contract account:

  • Randomly generated usernames and keys are displayed. You can shuffle them if you want.
  • Save these credentials in a secure place — this account will be the contract account you will deploy your contract to.

• Confirm the new contract policy was created. In the Wire Hub or Explorer, you should see:

  • Account Type: Contract Account
  • Public Keys: Matching the the public key you just saved.

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4. Clone the Contract Repository

Clone the existing GitHub repository containing the hello-world contract to your local environment:

git clone https://github.com/Wire-Network/guides.git && cd guides/hello-world-contract

5. Import the private key(from your contract account)

Ensure your wallet is unlocked:

sudo clio wallet unlock --name=default --password "$(cat /path/to/wallet-password.txt)"

Then, import the key pair generated in Step 2:

sudo clio wallet import --private-key <YOUR_PRIVATE_KEY>

5. Compile the Contract

Compile it using the ./build.sh. This script uses the Wire Contract Development Toolkit (CDT) the hello-world contract into WebAssembly (WASM) format. The script will create a compilation folder hello/ with the WASM and ABI files.

./build.sh

Upon successful compilation, you will see a hello/ folder with hello.abi and hello.wasm files.

hello-world-contract/

|   ....
├── hello           
│   ├── hello.abi
│   └── hello.wasm
|   ...

6. Deploy the Contract

Edit the Deploy Script

• Open the deploy script (e.g., deploy.sh).
• Add -u parameter with the RPC of the testnet - https://testnet-00.wire.foundation
• Set the authority/permissions parameter (-p) to the contract account’s own username. The contracts deploys using its own authority (-p <contractUsername>@active).
• Set the parameter after contract subcommand to match the contract account's username as well.

info

Don't forget adding the -u to the deploy script. The video was recorded on a server already connected to the testnet locally, hence it was unintentionally ommited.

deploy.sh

sudo clio -u https://testnet-00.wire.foundation set contract contractAccount ./hello -p contractAccount@active

See more information about clio set contract here.

Run the deploy script:

sudo ./deploy.sh

If successful, you’ll see a transaction receipt indicating “executed success”.

• In the Wire Hub or Explorer, navigate to the Accounts -> Contract Accounts list. You should see your new contract.
• You can then inspect tables and actions under the Contract tab on the contract’s account page.

Testing the hi() Action from the Wire Hub

The Hello World contract includes a single action called hi(), which logs a greeting in the console.

• In the Wire Hub, open the Contract Tab for your contract’s account.
• You’ll see Actions listed (in this case, just hi) and parameters field.
• To invoke the action, enter a username(e.g. bob) and click Submit.
• The Hub displays a receipt upon success, and you can view the console log output:

Hello, bob

• Copy the transaction ID to search the transaction and view the Transaction Detail page.

Testing the hi Action with clio

• Push an action with your personal Authority (Fails)

  Let's attempt to push an action with your personal authority (Fails)

  sudo clio -u https://testnet-00.wire.foundation push action <contractAccount> hi '["bob"]' -p <yourWireUsername>@active

  It will fail because you haven’t imported your personal account’s private key into your local clio wallet.

  Error 3090003: Provided keys, permissions, and delays do not satisfy declared authorizations
  Ensure that you have the related private keys inside your wallet and your wallet is unlocked.
  Error Details:
  transaction declares authority '{"actor":"yourWireUsername","permission":"active"}', but does not have signatures for it.

• Push the Action with the Contract’s Authority (Succeeds)

  Run the command again, but use the contract policy account authority:

  sudo clio -u https://testnet-00.wire.foundation push action <contractAccount> hi '["bob"]' -p <contractAccount>@active

  Ouput:

  executed transaction: success
  Hello, bob

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🎉 Congratulations! You’ve successfully:

• Created a Wire Testnet account
• Requested a Developer Contract Policy
• Built and Deployed a hello-world contract
• Tested the contract actions via the Wire Hub and from the command line (clio)

References

hello-world Tutorial

Wire Testnet - Connect a Wallet

Wire Testnet - Create an account

Wire Testnet - Request Developer Contract Policy