Introduction to Starknet Contracts

1. Install starknet-foundry by running this command: curl -L https://raw.githubusercontent.com/foundry-rs/starknet-foundry/master/scripts/install.sh | sh restart your terminal run snfoundryup

2. Create an account on any of these RPC provides:

   • Voyager
   • BlastAPI
   • Infura

Generate an RPC apikey to interact with the network

3. Create a contract account by running this command on your terminal: sncast -u <rpc-url> account create -n <name> --add-profile

4. Deploy the contract account: sncast --url <rpc_url_with_api_key> account deploy --name <account_name> --max-fee 4323000047553 NB Running the above command should trigger an error: error: Account balance is smaller than the transaction's max_fee. That why your account must be funded; to fund your account, visit - https://faucet.goerli.starknet.io/

5. Compile your contract by running: scarb build

6. Declare your contract: sncast --account test_deploy -u <url> declare --contract-name <contract_name>

7. Deploy your contract: sncast --account <your_account> --url <your_rpc_url> deploy --class-hash <generated_class_hash>

NB While deploying, make sure you check the constructor argument of the contract you are trying to deploy. All arguments must be passed in appropriately; for such case, use this command: sncast --account <your_account_name> --url <your_rpc_url> deploy --class-hash <your_class_hash> --constructor-calldata <your_constructor_args>

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Introduction to Dispatchers

Deployed Contracts

Ownable Contract

• class hash - 0x421a3ad93deda96f863e26ab51a79f4cea384d71714a5b37ace35010872a088
• address - 0x4a742edef4df3d3fb09809535a322971ababb1f337ffcf5c297a941f54a76e1

Counter Contract

• class hash - 0x71d83bb407cdd1a963bdcba92c82b3ff18e8e56fd3cfa9410b0dce069477511
• address - 0x14b32ec4783dabf825bb2ff4c82b20a81273455cf90ff263c85216b54b1f36d

Caller Contract

• class hash - 0x6c9d24030d72669af3e857dc1f04981c5cf316e0c2efee443509bbf95530587
• address - 0x2ee3772f1ec48d45bd6280daf74bc35eacd8f5dd741daceaea04130bade808

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Interacting with Deployed Contracts

• Invoke: to execute the logic of a state-changing (writes) function within your deployed contracts from the terminal, run

sncast --url <your_rpc_url>  --account <account_name> invoke --contract-address <your_contract_address> --function "<your_function_name>" --calldata <fn_args>

• Call: to execute the logic of a non-state-changing (reads) function within your deployed contracts from the terminal, run:

sncast --url <your_rpc_url>  --account <account_name> call --contract-address <your_contract_address> --function "<your_function_name"

NB:

• To test out dispatchers, please call the address the CallerContract which contains dispatchers to call the logic of Ownable and Counter contracts respectively
• In the event the function to be called accepts some args, append the call --calldata flag to the above invoke and call commands with the appropriate args