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Overview

Step by step guide url

Set the environment

setting up the necessary configure in both network-config.js and hardhat-config.js

Running steps:

  1. config PRC_URL and PRIVATE_KEY is the first step

  2. run npx hardhat functions-simulate to simulate

  3. run npx hardhat functions-deploy-client --network NETWORK to deploy the consumer contract to specific network (get the address of function consumer)

  4. run npx hardhat functions-sub-create --network NETWORK --amount 1 --contract YOUR_FUNCTION_CONSUMER_ADDRESS if the running goes successfully, should get the Subscription ID from the output

......
Created subscription with ID: YOUR_SUBSCRIPTION_ID
Owner: ACCOUNT_ADDRESS
Balance: 1.0 LINK
1 authorized consumer contract:
[ 'YOUR_FUNCTION_CONSUMER_ADDRESS' ]
  1. get the the result through npx hardhat functions-request --subid YOUR_SUBSCRIPTION_ID --contract YOUR_FUNCTION_CONSUMER_ADDRESS --network NETWORK

Example of result

Consumer Contract Address: 0xa6d51377d1b6f3c8570D024f974e669C69ef0929

Response returned to client contract represented as a hex string: 0x00000000000000000000000000000000000000000000000000000000000f50ed Decoded as a uint256: 1003757

Actual amount billed to subscription #1873:

Type Amount
Transmission cost: 0.000095387476493105 LINK
Base fee: 0.2 LINK
Total cost: 0.200095387476493105 LINK