Preparation ⢠Download LangChain, download address: https://www.langchain.com/ ⢠Log in to cometapi. Click "Add Token" in the API token section to get your token key: sk-xxxxx and baseurl: https://api.cometapi.com API Configuration ⢠Add the key token you obtained from cometapi to your system environment variables. ⢠Or when passing parameters in the compiler, enter https://api.cometapi.com/v1 for the URL, and paste the sk-xxxxx from cometapi in the API key input box. Testing the Call After configuration, enter a simple test command code in the compiler, such as asking for the current time. If the call is successful, you will receive a corresponding answer; if it fails, check if the configuration is correct or contact cometapi online customer service.