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 →
{
"name": "CrudApiPut",
"nodes": [
{
"parameters": {
"httpMethod": "PUT",
"path": "api/messages/:id",
"responseMode": "responseNode",
"options": {}
},
"type": "n8n-nodes-base.webhook",
"typeVersion": 2.1,
"position": [
176,
16
],
"id": "41324d87-f0b5-4876-bc5d-97f3137ad70d",
"name": "Webhook"
},
{
"parameters": {
"queue": "Crud_Put",
"options": {}
},
"type": "n8n-nodes-base.rabbitmq",
"typeVersion": 1.1,
"position": [
1504,
16
],
"id": "41db0e42-6afd-4c30-b18b-720b10477363",
"name": "RabbitMQ",
"credentials": {
"rabbitmq": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n \"status\": 400,\n \"title\": \"Bad request\",\n \"details\": \"Id is invalid or null\"\n}",
"options": {
"responseCode": 400
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
1088,
192
],
"id": "878466b1-c0cc-4646-8c8e-50cc2e2f84cf",
"name": "Respond to Webhook5"
},
{
"parameters": {
"jsCode": "const item = $input.item;\n\nif(item.json === undefined || item.json === null){\n item.json = {};\n}\n\n\nconst crypto = require('crypto');\n\nconst secretKey = 'seu-segredo-secreto';\n\n\nfunction base64UrlDecode(data) {\n let base64 = data.replace(/-/g, '+').replace(/_/g, '/');\n \n while (base64.length % 4) {\n base64 += '=';\n }\n return Buffer.from(base64, 'base64').toString('utf8');\n}\n\n\ntry {\n \n const authHeader = $json.headers['authorization'];\n\n if (!authHeader || !authHeader.startsWith('Bearer ')) {\n throw new Error('Authorization header missing or invalid');\n }\n\n \n const token = authHeader.split(' ')[1];\n\n \n const [encodedHeader, encodedPayload, signature] = token.split('.');\n\n if (!encodedHeader || !encodedPayload || !signature) {\n throw new Error('Invalid token format');\n }\n\n \n const dataToSign = `${encodedHeader}.${encodedPayload}`;\n const expectedSignature = crypto\n .createHmac('sha256', secretKey)\n .update(dataToSign)\n .digest('base64url');\n\n \n const sigBuffer = Buffer.from(signature, 'base64url');\n const expectedSigBuffer = Buffer.from(expectedSignature, 'base64url');\n\n if (sigBuffer.length !== expectedSigBuffer.length || !crypto.timingSafeEqual(sigBuffer, expectedSigBuffer)) {\n throw new Error('Invalid signature');\n }\n\n \n const payload = JSON.parse(base64UrlDecode(encodedPayload));\n const nowInSeconds = Math.floor(Date.now() / 1000);\n\n if (payload.exp < nowInSeconds) {\n throw new Error('Token has expired');\n }\n\n \n item.json.auth_user = payload;\n item.json.isValid = true;\n\n} catch (Error) {\n\n item.json.isValid = false;\n item.json.errorDetails = Error.message;\n}\n\nreturn item;"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
320,
16
],
"id": "2c153710-740d-4652-9b48-c72deae65eb5",
"name": "token_Validation",
"onError": "continueErrorOutput"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "953bbc3b-1c4c-47eb-bd04-bf466211ddf1",
"leftValue": "={{ $json.isValid }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
512,
16
],
"id": "175ffa9a-0d7a-4d97-b4ca-77794e181c1d",
"name": "token_Is_Valid"
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n \"type\": \"https://example.com/probs/internal-error\",\n \"title\": \"Internal Server Error\",\n \"status\": 500,\n \"detail\": \"Ocorreu um erro interno inesperado ao processar sua solicita\u00e7\u00e3o.\",\n \"instance\": \"/api/messages/:id\",\n \"request_id\": \"req_xyz987\"\n}",
"options": {
"responseCode": 500
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
512,
192
],
"id": "63a50d34-ab9c-4a77-a1be-084b705ed76b",
"name": "error_500"
},
{
"parameters": {
"jsCode": "const uuidRegex = /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/;\n\nconst returnItems = [];\n\nfor (const item of $input.all()) {\n try {\n if (item.json === undefined || item.json === null) {\n item.json = {};\n }\n \n const id = item.json.params.id;\n \n if (!id || !uuidRegex.test(id)) {\n item.json.id_validation_error = {\n type: \"https://example.com/probs/invalid-parameter\",\n title: \"Invalid Parameter\",\n status: 400, \n detail: \"The 'id' parameter in the URL is missing or not a valid UUID.\",\n instance: item.json.webhookUrl || 'webhookUrl_not_found'\n };\n } else {\n item.json.id_validation_error = null;\n }\n \n } catch (error) {\n item.json.id_validation_error = {\n type: \"https://example.com/probs/internal-error\",\n title: \"Internal Server Error\",\n status: 500,\n detail: \"An unexpected error occurred during ID validation: \" + error.message\n };\n }\n \n returnItems.push(item);\n}\n\nreturn returnItems;"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
720,
16
],
"id": "5f63b464-9e25-47e8-88db-31f8155a5753",
"name": "id_Validation",
"onError": "continueErrorOutput"
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n\"title\": \"unauthorized\",\n\"status\": 401,\n\"detail\": \"invalid or expired token\"\n}",
"options": {
"responseCode": 401
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
720,
192
],
"id": "49ecccc2-4066-4dc6-be41-58ef188d9d09",
"name": "error_401"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "b0f6aaeb-31b6-4938-95fc-96aa583810a9",
"leftValue": "={{ $json.id_validation_error }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
912,
16
],
"id": "cf5966bc-f453-4517-bb9e-2bcaf848f467",
"name": "id_Validation_Error_Is_Not_Empty"
},
{
"parameters": {
"jsCode": "\nconst returnItems = [];\n\n\nfor (const item of $input.all()) {\n try {\n if (item.json === undefined || item.json === null) {\n item.json = {};\n }\n\n const body = item.json.body || {};\n\n const invalid_params = [];\n const validated_data = {};\n\n if (!body.title) {\n invalid_params.push({ name: 'title', reason: 'required' });\n } else if (typeof body.title !== 'string') {\n invalid_params.push({ name: 'title', reason: 'must be a string' });\n } else if (body.title.trim().length === 0) {\n invalid_params.push({ name: 'title', reason: 'must not be empty' });\n } else {\n validated_data.title = body.title.trim();\n }\n\n if (!body.body) {\n invalid_params.push({ name: 'body', reason: 'required' });\n } else if (typeof body.body !== 'string') {\n invalid_params.push({ name: 'body', reason: 'must be a string' });\n } else if (body.body.length < 1) {\n invalid_params.push({ name: 'body', reason: 'must be at least 1 character long' });\n } else {\n validated_data.body = body.body;\n }\n\n if (body.author !== undefined && body.author !== null) {\n if (typeof body.author !== 'string') {\n invalid_params.push({ name: 'author', reason: 'must be a string' });\n } else {\n validated_data.author = body.author;\n }\n } else {\n validated_data.author = null; \n }\n\n const valid_statuses = ['draft', 'published', 'archived'];\n if (body.status !== undefined && body.status !== null) {\n if (typeof body.status !== 'string' || !valid_statuses.includes(body.status)) {\n invalid_params.push({ name: 'status', reason: 'must be one of: draft, published, archived' });\n } else {\n validated_data.status = body.status;\n }\n } else {\n validated_data.status = 'draft';\n }\n\n if (invalid_params.length > 0) {\n const problem_json = {\n type: \"https://example.com/probs/invalid-input\",\n title: \"Invalid input\",\n status: 400,\n detail: \"One or more fields failed validation\",\n instance: item.json.webhookUrl || 'webhookUrl_not_found', \n invalid_params: invalid_params\n };\n item.json.validation_error = problem_json;\n item.json.validated_data = null;\n } else {\n item.json.validation_error = null;\n item.json.validated_data = validated_data;\n }\n\n } catch (error) {\n if (item.json === undefined || item.json === null) {\n item.json = {};\n }\n item.json.validation_error = {\n type: \"https://example.com/probs/internal-error\",\n title: \"Internal Server Error\",\n status: 500,\n detail: \"An unexpected error occurred during payload validation.\"\n };\n item.json.payload_error_details = error.message;\n }\n \n returnItems.push(item);\n}\n\nreturn returnItems;"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1088,
16
],
"id": "eb970375-b9e6-4692-befb-0fdb0ad5cac4",
"name": "pay_load_Validation",
"onError": "continueErrorOutput"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "2e24857b-370e-44d6-9123-b45a72dee74f",
"leftValue": "={{ $json.validation.error }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
1280,
16
],
"id": "018474a0-feb9-4653-a4f5-4003466b5de1",
"name": "validation_Error_Is_Not_Empty"
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n \"type\": \"https://example.com/probs/internal-error\",\n \"title\": \"Internal Server Error\",\n \"status\": 500,\n \"detail\": \"Ocorreu um erro interno inesperado ao processar sua solicita\u00e7\u00e3o.\",\n \"instance\": \"/api/messages/:id\",\n \"request_id\": \"req_xyz987\"\n}",
"options": {
"responseCode": 500
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
912,
192
],
"id": "cdcd21f1-8217-4dd1-ac63-20e8494fb79c",
"name": "error_500_"
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n \"type\": \"https://example.com/probs/internal-error\",\n \"title\": \"Internal Server Error\",\n \"status\": 500,\n \"detail\": \"Ocorreu um erro interno inesperado ao processar sua solicita\u00e7\u00e3o.\",\n \"instance\": \"/api/messages/:id\",\n \"request_id\": \"req_xyz987\"\n}",
"options": {
"responseCode": 500
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
1280,
192
],
"id": "e5027d08-12f4-4737-97af-b4a108f00759",
"name": "_error_500"
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n \"type\": \"https://example.com/probs/invalid-input\",\n \"title\": \"Invalid input\",\n \"status\": 400,\n \"detail\": \"One or more fields failed validation\",\n \"instance\": \"/api/messages/:id\"\n}",
"options": {
"responseCode": 400
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
1504,
192
],
"id": "9018e90c-0686-444b-bb22-68478ff4d72b",
"name": "error_400"
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\n \"status\": 202,\n \"title\": \"accepted\"\n}",
"options": {
"responseCode": 202
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
1712,
16
],
"id": "5efd1714-1776-484e-840d-a0c61f541aa8",
"name": "accepted_202"
}
],
"connections": {
"Webhook": {
"main": [
[
{
"node": "token_Validation",
"type": "main",
"index": 0
}
]
]
},
"RabbitMQ": {
"main": [
[
{
"node": "accepted_202",
"type": "main",
"index": 0
}
]
]
},
"token_Validation": {
"main": [
[
{
"node": "token_Is_Valid",
"type": "main",
"index": 0
}
],
[
{
"node": "error_500",
"type": "main",
"index": 0
}
]
]
},
"token_Is_Valid": {
"main": [
[
{
"node": "id_Validation",
"type": "main",
"index": 0
}
],
[
{
"node": "error_401",
"type": "main",
"index": 0
}
]
]
},
"id_Validation": {
"main": [
[
{
"node": "id_Validation_Error_Is_Not_Empty",
"type": "main",
"index": 0
}
],
[
{
"node": "error_500_",
"type": "main",
"index": 0
}
]
]
},
"id_Validation_Error_Is_Not_Empty": {
"main": [
[
{
"node": "Respond to Webhook5",
"type": "main",
"index": 0
}
],
[
{
"node": "pay_load_Validation",
"type": "main",
"index": 0
}
]
]
},
"pay_load_Validation": {
"main": [
[
{
"node": "validation_Error_Is_Not_Empty",
"type": "main",
"index": 0
}
],
[
{
"node": "_error_500",
"type": "main",
"index": 0
}
]
]
},
"validation_Error_Is_Not_Empty": {
"main": [
[
{
"node": "error_400",
"type": "main",
"index": 0
}
],
[
{
"node": "RabbitMQ",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "c47c113e-0311-439e-8795-bb07b53cb0b9",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "g78ahm6xty1YHSA3",
"tags": []
}
Credentials you'll need
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rabbitmq
Pro
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About this workflow
CrudApiPut. Uses rabbitmq. Webhook trigger; 15 nodes.
Source: https://github.com/marleytw/Teste-Tecnico-crud-n8n-react/blob/cd676d13ca1c1fa22e1df92d2c04475eb294cb5d/N8n/ApiPut.json — original creator credit. Request a take-down →
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