The workflow JSON
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{
"meta": {
"templateCreatedBy": "tiangao88",
"description": "Example n8n workflow that returns model configurations via webhook for JSON HTTP Loader",
"repository": "https://github.com/sven-eisenschmidt/n8n-openai-bridge"
},
"nodes": [
{
"parameters": {
"content": "## Listing Available Models \n[Read more about the Model Loader Architecture for n8n-openai-bridge](https://github.com/sveneisenschmidt/n8n-openai-bridge/blob/main/docs/MODELLOADER.md)\n\n- Configure List_Workflows with your n8n API Key \n- The filtering **tag** 'n8n-openai-bridge' is a parameter in the Configuration node.\n- Remember to configure **base_url** as well.\n- You can add nodes for your custom filtering logic",
"height": 612,
"width": 1464,
"color": 7
},
"id": "edcbe9bb-edb9-4831-b783-0e6c483b8d6b",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-32,
-48
],
"typeVersion": 1
},
{
"parameters": {
"path": "n8n-models",
"responseMode": "responseNode",
"options": {}
},
"id": "41c42480-8caf-4628-a2cd-8c68752ab36b",
"name": "Models",
"type": "n8n-nodes-base.webhook",
"position": [
16,
176
],
"typeVersion": 2
},
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
16,
368
],
"id": "74d65e08-1a2b-479f-929e-ca85d02abce0",
"name": "When clicking \u2018Execute workflow\u2019"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "2b9d0ffd-1af4-41c5-a6de-270da1423f82",
"name": "tag",
"value": "n8n-openai-bridge",
"type": "string"
},
{
"id": "a1ac1245-bb51-422e-95bb-8f626aaab9fd",
"name": "base_url",
"value": "={{ $env.WEBHOOK_URL }}/webhook",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
224,
176
],
"id": "a6d50484-7131-479d-968c-f98d056a3887",
"name": "Configuration"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "b03926a4-4ad9-4d87-8188-989fa5158a07",
"name": "name",
"type": "string",
"value": "={{ $json.name }}"
},
{
"id": "88bd31bd-005d-4734-bffa-4fd3b8487166",
"name": "id",
"type": "string",
"value": "={{ $json.id }}"
},
{
"id": "7fbabd24-8dea-495e-96fe-da08790f971c",
"name": "webhook_url",
"type": "string",
"value": "={{ $json.nodes.find(node => node.parameters?.path).parameters.path }}"
},
{
"id": "6b538d2a-5612-4db6-a23e-d240e3eb87e0",
"name": "chat_url",
"value": "={{ $json.nodes.find(node => node.parameters?.public).webhookId }}",
"type": "string"
}
]
},
"options": {}
},
"id": "1c40c46c-3c41-497b-b3f6-6792cfcb686a",
"name": "Select_Fields",
"type": "n8n-nodes-base.set",
"position": [
880,
176
],
"typeVersion": 3.4
},
{
"parameters": {
"jsCode": "// Helper function to safely join URL parts, preventing double slashes\nfunction joinUrlPaths(base, path) {\n if (!base) return path;\n if (!path) return base;\n\n const baseEndsWithSlash = base.endsWith('/');\n const pathStartsWithSlash = path.startsWith('/');\n\n if (baseEndsWithSlash && pathStartsWithSlash) {\n return base + path.substring(1); // Remove leading slash from path\n } else if (!baseEndsWithSlash && !pathStartsWithSlash) {\n return base + '/' + path; // Add a slash in between\n } else {\n return base + path; // One already has a slash, or neither\n }\n}\n\nconst items = $input.all(); // Get all input items\n\n// Retrieve the base_url from the 'Configuration' node\n// Ensure the 'Configuration' node exists and has a 'base_url' field in its output\nconst baseUrl = $('Configuration').first().json.base_url;\n\nconst finalOutputObject = {}; // Initialize an empty object to store the combined output\n\n// Iterate over each input item\nitems.forEach(item => {\n const inputData = item.json; // Access the JSON data of the current item\n\n const name = inputData.name;\n const webhook_url = inputData.webhook_url;\n const chat_url = inputData.chat_url; // Get the chat_url\n\n let rawUrl; // This will hold the URL part before adding the base_url\n\n // Conditional logic: Prefer chat_url if it exists and is not empty\n if (chat_url && chat_url.trim() !== '') {\n // Assuming chat_url is an ID or path segment that needs '/chat' appended\n rawUrl = chat_url + '/chat';\n } else {\n rawUrl = webhook_url;\n }\n\n let finalUrl = null;\n // If a rawUrl was determined, prepend the baseUrl\n if (rawUrl) {\n // Check if rawUrl is already a full URL (starts with http/https)\n // If it is, we might not want to prepend baseUrl, or we assume baseUrl is the domain\n // For this example, we'll assume rawUrl is a path/ID that needs the baseUrl\n if (baseUrl) {\n finalUrl = joinUrlPaths(baseUrl, rawUrl);\n } else {\n finalUrl = rawUrl; // Use rawUrl as is if no baseUrl is available\n }\n }\n\n // Add the name-url pair to the final output object\n if (name && finalUrl) {\n finalOutputObject[name] = finalUrl;\n } else if (name) {\n // If no URL could be constructed, you might want to log a warning or set a default\n console.warn(`Could not construct a URL for item: ${name}. Skipping.`);\n }\n});\n\n// Return the single combined object in the n8n expected format\nreturn [{ json: finalOutputObject }];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1088,
176
],
"id": "fa5a0b6e-bd01-4ab3-8a71-03c4fa68093e",
"name": "Compile_Answer"
},
{
"parameters": {
"filters": {
"activeWorkflows": true,
"tags": "={{ $json.tag }}",
"excludePinnedData": true
},
"requestOptions": {}
},
"id": "da7707e3-d796-4c70-a3b7-e9dbac0c29be",
"name": "List_Workflows",
"type": "n8n-nodes-base.n8n",
"position": [
448,
176
],
"typeVersion": 1,
"credentials": {
"n8nApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"respondWith": "json",
"responseBody": "={{ $json }}",
"options": {}
},
"id": "e68da64a-e842-4791-a1c7-6277817697e8",
"name": "Models_Response",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
1280,
176
],
"executeOnce": false,
"typeVersion": 1.2
},
{
"parameters": {},
"type": "n8n-nodes-base.noOp",
"typeVersion": 1,
"position": [
656,
176
],
"id": "10067cb8-b006-4ef7-83f7-85e65e3a4ad5",
"name": "Your_Custom_Logic"
}
],
"connections": {
"Models": {
"main": [
[
{
"node": "Configuration",
"type": "main",
"index": 0
}
]
]
},
"When clicking \u2018Execute workflow\u2019": {
"main": [
[
{
"node": "Configuration",
"type": "main",
"index": 0
}
]
]
},
"Configuration": {
"main": [
[
{
"node": "List_Workflows",
"type": "main",
"index": 0
}
]
]
},
"Select_Fields": {
"main": [
[
{
"node": "Compile_Answer",
"type": "main",
"index": 0
}
]
]
},
"Compile_Answer": {
"main": [
[
{
"node": "Models_Response",
"type": "main",
"index": 0
}
]
]
},
"List_Workflows": {
"main": [
[
{
"node": "Your_Custom_Logic",
"type": "main",
"index": 0
}
]
]
},
"Your_Custom_Logic": {
"main": [
[
{
"node": "Select_Fields",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
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n8nApi
Pro
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About this workflow
N8N Workflow Http Loader. Uses n8n. Webhook trigger; 9 nodes.
Source: https://github.com/sveneisenschmidt/n8n-openai-bridge/blob/98976fe041d5ca6ce4dc01cfc63a60ba3012350e/n8n-examples/n8n_workflow_http_loader.json — original creator credit. Request a take-down →
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