Workflow: Manual HTTP Automation

{
    "nodes": [
        {
            "name": "On clicking 'execute'",
            "type": "n8n-nodes-base.manualTrigger",
            "position": [
                250,
                300
            ],
            "parameters": [],
            "typeVersion": 1
        },
        {
            "name": "FunctionItem",
            "type": "n8n-nodes-base.functionItem",
            "position": [
                450,
                300
            ],
            "parameters": {
                "functionCode": "\/\/ hashtag list\nconst Hashtags = [\n  \"#techtwitter\",\n  \"#n8n\"\n];\n\n\/\/ random output function\nconst randomHashtag = Hashtags[Math.floor(Math.random() * Hashtags.length)];\nitem.hashtag = randomHashtag;\nreturn item;"
            },
            "typeVersion": 1
        },
        {
            "name": "HTTP Request",
            "type": "n8n-nodes-base.httpRequest",
            "position": [
                650,
                300
            ],
            "parameters": {
                "url": "https:\/\/api.openai.com\/v1\/engines\/text-davinci-001\/completions",
                "options": [],
                "requestMethod": "POST",
                "authentication": "headerAuth",
                "jsonParameters": true,
                "bodyParametersJson": "={\n  \"prompt\": \"Generate a tweet, with under 100 characters, about and including the hashtag {{$node[\"FunctionItem\"].json[\"hashtag\"]}}:\",\n  \"temperature\": 0.7,\n  \"max_tokens\": 64,\n  \"top_p\": 1,\n  \"frequency_penalty\": 0,\n  \"presence_penalty\": 0\n}"
            },
            "credentials": {
                "httpHeaderAuth": ""
            },
            "typeVersion": 1
        },
        {
            "name": "Airtable",
            "type": "n8n-nodes-base.airtable",
            "position": [
                1050,
                300
            ],
            "parameters": {
                "table": "main",
                "options": [],
                "operation": "append",
                "application": "appOaG8kEA8FAABOr"
            },
            "credentials": {
                "airtableApi": ""
            },
            "typeVersion": 1
        },
        {
            "name": "Set",
            "type": "n8n-nodes-base.set",
            "position": [
                850,
                300
            ],
            "parameters": {
                "values": {
                    "string": [
                        {
                            "name": "Hashtag",
                            "value": "={{$node[\"FunctionItem\"].json[\"hashtag\"]}}"
                        },
                        {
                            "name": "Content",
                            "value": "={{$node[\"HTTP Request\"].json[\"choices\"][0][\"text\"]}}"
                        }
                    ]
                },
                "options": [],
                "keepOnlySet": true
            },
            "typeVersion": 1
        }
    ],
    "connections": {
        "Set": {
            "main": [
                [
                    {
                        "node": "Airtable",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "FunctionItem": {
            "main": [
                [
                    {
                        "node": "HTTP Request",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "HTTP Request": {
            "main": [
                [
                    {
                        "node": "Set",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "On clicking 'execute'": {
            "main": [
                [
                    {
                        "node": "FunctionItem",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        }
    }
}