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": "CrudApiPost",
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "api/messages",
"responseMode": "responseNode",
"options": {}
},
"type": "n8n-nodes-base.webhook",
"typeVersion": 2.1,
"position": [
0,
0
],
"id": "03b9ba40-6896-4279-bb33-5397e7dec9f1",
"name": "Webhook"
},
{
"parameters": {
"queue": "Crud_Post",
"options": {}
},
"type": "n8n-nodes-base.rabbitmq",
"typeVersion": 1.1,
"position": [
1008,
-96
],
"id": "41ef65a7-128d-487a-84ea-c5928c46a674",
"name": "RabbitMQ",
"credentials": {
"rabbitmq": {
"name": "<your credential>"
}
}
},
{
"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\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": [
192,
0
],
"id": "b2b14595-e504-4230-a221-a4db4ea6ac7f",
"name": "token_Validation",
"onError": "continueErrorOutput"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "0098e0ad-2cfe-4bb4-9329-c04e87ae2426",
"leftValue": "={{ $json.isValid }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
432,
-96
],
"id": "b1b7ec60-a699-4949-9682-76999c107477",
"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\",\n \"request_id\": \"req_xyz987\"\n}",
"options": {
"responseCode": 500
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
432,
128
],
"id": "7c8ab678-c241-4c48-a0f1-5ec4d0f5e632",
"name": "error_500"
},
{
"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": [
624,
128
],
"id": "05e6627d-dfc7-432d-a55e-a51efe1a7cd8",
"name": "error_401"
},
{
"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\",\n \"request_id\": \"req_xyz987\"\n}",
"options": {
"responseCode": 500
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
816,
128
],
"id": "52a9a9ae-5e41-4935-82f7-a2c50afefc39",
"name": "error_500_"
},
{
"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": [
624,
-96
],
"id": "c908b9ec-da48-42b2-b5bd-f446dd97f57a",
"name": "payload_Validation",
"onError": "continueErrorOutput"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "a190cf7a-86cd-4543-bfc6-c39d73b6aece",
"leftValue": "={{ $json.validation.error }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
816,
-96
],
"id": "3616f0a7-631a-491e-8529-8ee44f029384",
"name": "validation_Error_Is_Not_Empty"
},
{
"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\"\n}",
"options": {
"responseCode": 400
}
},
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.4,
"position": [
1008,
128
],
"id": "91df6e0d-ad9f-418c-826a-790f985d2e4a",
"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": [
1216,
-96
],
"id": "959679b6-3df4-4546-99dc-fa188e0314ab",
"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": "payload_Validation",
"type": "main",
"index": 0
}
],
[
{
"node": "error_401",
"type": "main",
"index": 0
}
]
]
},
"payload_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": "d2d8ccd7-2fff-4ea9-921e-1282a5f8b502",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "opf15ckuvWtyIwD8",
"tags": []
}
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.
rabbitmq
Pro
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About this workflow
CrudApiPost. Uses rabbitmq. Webhook trigger; 11 nodes.
Source: https://github.com/marleytw/Teste-Tecnico-crud-n8n-react/blob/cd676d13ca1c1fa22e1df92d2c04475eb294cb5d/N8n/ApiPost.json — original creator credit. Request a take-down →
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