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Load Prompts from Github Repo and auto populate n8n expressions

Load Prompts from Github Repo and auto populate n8n expressions. Uses manualTrigger, github, extractFromFile, stopAndError. Event-driven trigger; 17 nodes.

Event trigger★★★★☆ complexityAI-powered17 nodesGithubStop And ErrorAgentLm Chat Ollama
AI & RAG Trigger: Event Nodes: 17 Complexity: ★★★★☆ AI nodes: yes

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

Download .json
{
  "id": "QyMyf3zraY0wxXDf",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "name": "Load Prompts from Github Repo and auto populate n8n expressions",
  "tags": [],
  "nodes": [
    {
      "id": "34781446-b06e-41eb-83b8-b96bda1a5595",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -80,
        0
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "c53b7243-7c82-47e0-a5ee-bd82bc51c386",
      "name": "GitHub",
      "type": "n8n-nodes-base.github",
      "position": [
        600,
        0
      ],
      "parameters": {
        "owner": {
          "__rl": true,
          "mode": "name",
          "value": "={{ $json.Account }}"
        },
        "filePath": "={{ $json.path }}{{ $json.prompt }}",
        "resource": "file",
        "operation": "get",
        "repository": {
          "__rl": true,
          "mode": "name",
          "value": "={{ $json.repo }}"
        },
        "additionalParameters": {}
      },
      "credentials": {
        "githubApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "9976b199-b744-47a7-9d75-4b831274c01b",
      "name": "Extract from File",
      "type": "n8n-nodes-base.extractFromFile",
      "position": [
        840,
        0
      ],
      "parameters": {
        "options": {},
        "operation": "text"
      },
      "typeVersion": 1
    },
    {
      "id": "26aa4e6a-c487-4cdf-91d5-df660cf826a6",
      "name": "setVars",
      "type": "n8n-nodes-base.set",
      "position": [
        180,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "150618c5-09b1-4f8b-a7b4-984662bf3381",
              "name": "Account",
              "type": "string",
              "value": "TPGLLC-US"
            },
            {
              "id": "22e8a3b0-bd53-485c-b971-7f1dd0686f0e",
              "name": "repo",
              "type": "string",
              "value": "PeresPrompts"
            },
            {
              "id": "ab94d0a1-ef3a-4fe9-9076-6882c6fda0ac",
              "name": "path",
              "type": "string",
              "value": "SEO/"
            },
            {
              "id": "66f122eb-1cbd-4769-aac8-3f05cdb6c116",
              "name": "prompt",
              "type": "string",
              "value": "keyword_research.md"
            },
            {
              "id": "03fe26a3-04e6-439c-abcb-d438fc5203c0",
              "name": "company",
              "type": "string",
              "value": "South Nassau Physical Therapy"
            },
            {
              "id": "c133d216-a457-4872-a060-0ba4d94549af",
              "name": "product",
              "type": "string",
              "value": "Manual Therapy"
            },
            {
              "id": "584864dd-2518-45e2-b501-02828757fc3a",
              "name": "features",
              "type": "string",
              "value": "pain relief"
            },
            {
              "id": "0c4594cc-302a-4215-bdad-12cf54f57967",
              "name": "sector",
              "type": "string",
              "value": "physical therapy"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "9d92f581-8cd9-448c-aa1d-023a96c1ddda",
      "name": "replace variables",
      "type": "n8n-nodes-base.code",
      "position": [
        1900,
        -20
      ],
      "parameters": {
        "jsCode": "// Fetch the prompt text\nconst prompt = $('SetPrompt').first().json.data;  // Ensure the prompt contains placeholders like {{ some.node.value }}\n\n// Example variables object\nconst variables = {\n  company: $('setVars').first().json.company,\n  features: \"Awesome Software\",\n  keyword: \"2025-02-07\"\n};\n\n// Function to replace placeholders dynamically\nconst replaceVariables = (text, vars) => {\n  return text.replace(/{{(.*?)}}/g, (match, key) => {\n    const trimmedKey = key.trim();\n    \n    // Extract last part after the last dot\n    const finalKey = trimmedKey.split('.').pop();\n\n    // Replace if key exists, otherwise leave placeholder unchanged\n    return vars.hasOwnProperty(finalKey) ? vars[finalKey] : match;\n  });\n};\n\n// Replace and return result\nreturn [{\n  prompt: replaceVariables(prompt, variables)\n}];\n"
      },
      "typeVersion": 2
    },
    {
      "id": "6c6c4fde-6ee5-47a8-894d-44d1afcedc2a",
      "name": "If",
      "type": "n8n-nodes-base.if",
      "position": [
        1560,
        0
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "2717a7e5-095a-42bf-8b5b-8050c3389ec5",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              },
              "leftValue": "={{ $json.success }}",
              "rightValue": "={{ $('Check All Prompt Vars Present').item.json.keys()}}"
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "3b7712b8-5152-4f60-9401-03c89c39e227",
      "name": "Check All Prompt Vars Present",
      "type": "n8n-nodes-base.code",
      "position": [
        1280,
        0
      ],
      "parameters": {
        "jsCode": "// Get prompt text\nconst prompt = $json.data;\n\n// Extract variables inside {{ }} dynamically\nconst matches = [...prompt.matchAll(/{{(.*?)}}/g)];\nconst uniqueVars = [...new Set(matches.map(match => match[1].trim().split('.').pop()))];\n\n// Get variables from the Set Node\nconst setNodeVariables = $node[\"setVars\"].json || {};\n\n// Log extracted variables and Set Node keys\nconsole.log(\"Extracted Variables:\", uniqueVars);\nconsole.log(\"Set Node Keys:\", Object.keys(setNodeVariables));\n\n// Check if all required variables are present in the Set Node\nconst missingKeys = uniqueVars.filter(varName => !setNodeVariables.hasOwnProperty(varName));\n\nconsole.log(\"Missing Keys:\", missingKeys);\n\n// Return false if any required variable is missing, otherwise return true\nreturn [{\n  success: missingKeys.length === 0,\n  missingKeys: missingKeys\n}];\n"
      },
      "typeVersion": 2
    },
    {
      "id": "32618e10-3285-4c16-9e78-058dde329337",
      "name": "SetPrompt",
      "type": "n8n-nodes-base.set",
      "position": [
        1060,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "335b450d-542a-4714-83d8-ccc237188fc5",
              "name": "data",
              "type": "string",
              "value": "={{ $json.data }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "4d8b34ca-50dd-4f37-b4f7-542291461662",
      "name": "Stop and Error",
      "type": "n8n-nodes-base.stopAndError",
      "position": [
        1900,
        200
      ],
      "parameters": {
        "errorMessage": "=Missing Prompt Variables : {{ $('Check All Prompt Vars Present').item.json.missingKeys }}\n"
      },
      "typeVersion": 1
    },
    {
      "id": "a78c1e17-9152-4241-bcdf-c0d723da543b",
      "name": "Set Completed Prompt",
      "type": "n8n-nodes-base.set",
      "position": [
        2220,
        -20
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "57a9625b-adea-4ee7-a72a-2be8db15f3d4",
              "name": "Prompt",
              "type": "string",
              "value": "={{ $json.prompt }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "51447c90-a222-4172-a49b-86ec43332559",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        2440,
        -20
      ],
      "parameters": {
        "text": "={{ $json.Prompt }}",
        "options": {},
        "promptType": "define"
      },
      "typeVersion": 1.7
    },
    {
      "id": "f15b6af1-7af2-4515-be8f-960211118dce",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        60,
        -120
      ],
      "parameters": {
        "width": 340,
        "height": 260,
        "content": "# Set The variables in your prompt here"
      },
      "typeVersion": 1
    },
    {
      "id": "163db6cc-5b06-4ae6-ac97-5890b37cdb18",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        520,
        -120
      ],
      "parameters": {
        "color": 5,
        "content": "## The repo is currently public for you to test with"
      },
      "typeVersion": 1
    },
    {
      "id": "83ff6a86-a759-42a9-ace4-e20d57b906db",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1780,
        -200
      ],
      "parameters": {
        "width": 360,
        "height": 260,
        "content": "## Replaces the values in the prompt with the variables in the \n# 'setVars' Node"
      },
      "typeVersion": 1
    },
    {
      "id": "7dd61153-84ac-4b59-b449-333825476c33",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        2000,
        180
      ],
      "parameters": {
        "color": 3,
        "content": "## If you're missing variables they will be listed here"
      },
      "typeVersion": 1
    },
    {
      "id": "1f070dc3-3d25-41d8-b534-912ba7c8b2b0",
      "name": "Prompt Output",
      "type": "n8n-nodes-base.set",
      "position": [
        2800,
        -20
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "01a30683-c348-4712-a3b1-739fc4a17718",
              "name": "promptResponse",
              "type": "string",
              "value": "={{ $json.output }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "2d12a6e2-7976-41b0-8cb2-01466b28269d",
      "name": "Ollama Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOllama",
      "position": [
        2480,
        200
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "ollamaApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "4327a337-59e7-4b5b-98e8-93c6be550972",
  "connections": {
    "If": {
      "main": [
        [
          {
            "node": "replace variables",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Stop and Error",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "GitHub": {
      "main": [
        [
          {
            "node": "Extract from File",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "setVars": {
      "main": [
        [
          {
            "node": "GitHub",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Agent": {
      "main": [
        [
          {
            "node": "Prompt Output",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "SetPrompt": {
      "main": [
        [
          {
            "node": "Check All Prompt Vars Present",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract from File": {
      "main": [
        [
          {
            "node": "SetPrompt",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Ollama Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "replace variables": {
      "main": [
        [
          {
            "node": "Set Completed Prompt",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Set Completed Prompt": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check All Prompt Vars Present": {
      "main": [
        [
          {
            "node": "If",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking \u2018Test workflow\u2019": {
      "main": [
        [
          {
            "node": "setVars",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

About this workflow

Load Prompts from Github Repo and auto populate n8n expressions. Uses manualTrigger, github, extractFromFile, stopAndError. Event-driven trigger; 17 nodes.

Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →

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