{ "name": "Publish from any system via webhook", "nodes": [ { "parameters": { "httpMethod": "POST", "path": "postsider-publish", "responseMode": "onReceived", "options": {} }, "id": "a6b7c8d9-0001-4a5b-9c0d-111111111111", "name": "Webhook", "type": "n8n-nodes-base.webhook", "typeVersion": 2, "position": [ 0, 0 ], "webhookId": "postsider-publish" }, { "parameters": { "mode": "runOnceForAllItems", "jsCode": "// The webhook accepts JSON like:\n// {\n// \"content\": \"Hello from my CRM!\",\n// \"channelId\": \"REPLACE_WITH_CHANNEL_ID\",\n// \"platform\": \"x\", // optional, defaults to 'x'\n// \"date\": \"2026-08-16T10:00:00.000Z\" // optional; omit to publish immediately\n// }\nconst body = $input.first().json;\n\nreturn [{\n json: {\n content: body.content,\n channelId: body.channelId,\n platform: body.platform || 'x',\n date: body.date || ''\n }\n}];" }, "id": "a6b7c8d9-0002-4a5b-9c0d-222222222222", "name": "1. Normalize payload", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 220, 0 ] }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict", "version": 2 }, "conditions": [ { "id": "a6b7c8d9-0003-4a5b-9c0d-333333333333", "leftValue": "={{ $json.date }}", "rightValue": "", "operator": { "type": "string", "operation": "notEmpty", "name": "filter.operator.notEmpty" } } ], "combinator": "and" } }, "id": "a6b7c8d9-0004-4a5b-9c0d-444444444444", "name": "2. Date provided?", "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 440, 0 ] }, { "parameters": { "mode": "runOnceForAllItems", "jsCode": "const item = $input.first().json;\nreturn [{\n json: {\n body: {\n type: 'schedule',\n date: item.date,\n shortLink: false,\n tags: [],\n posts: [{\n integration: { id: item.channelId },\n value: [{ content: item.content, image: [] }],\n settings: { __type: item.platform }\n }]\n }\n }\n}];" }, "id": "a6b7c8d9-0005-4a5b-9c0d-555555555555", "name": "3a. Build schedule payload", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 660, -160 ] }, { "parameters": { "mode": "runOnceForAllItems", "jsCode": "const item = $input.first().json;\nreturn [{\n json: {\n body: {\n type: 'now',\n date: '',\n shortLink: false,\n tags: [],\n posts: [{\n integration: { id: item.channelId },\n value: [{ content: item.content, image: [] }],\n settings: { __type: item.platform }\n }]\n }\n }\n}];" }, "id": "a6b7c8d9-0006-4a5b-9c0d-666666666666", "name": "3b. Build publish-now payload", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 660, 160 ] }, { "parameters": { "method": "POST", "url": "https://api.postsider.com/public/v1/posts", "sendBody": true, "specifyBody": "json", "jsonBody": "={{ JSON.stringify($json.body) }}" }, "id": "a6b7c8d9-0007-4a5b-9c0d-777777777777", "name": "4a. Schedule in PostSider", "type": "n8n-nodes-base.httpRequest", "typeVersion": 4.2, "position": [ 880, -160 ], "credentials": { "httpHeaderAuth": { "id": "1", "name": "PostSider API Key" } } }, { "parameters": { "method": "POST", "url": "https://api.postsider.com/public/v1/posts", "sendBody": true, "specifyBody": "json", "jsonBody": "={{ JSON.stringify($json.body) }}" }, "id": "a6b7c8d9-0008-4a5b-9c0d-888888888888", "name": "4b. Publish now in PostSider", "type": "n8n-nodes-base.httpRequest", "typeVersion": 4.2, "position": [ 880, 160 ], "credentials": { "httpHeaderAuth": { "id": "1", "name": "PostSider API Key" } } }, { "parameters": { "height": 340, "width": 460, "content": "SETUP (once):\n\n1. Create an API key in PostSider: app.postsider.com > Settings > API. It starts with ps_.\n2. In n8n create a Header Auth credential: Name = Authorization, Value = your ps_ key. Select it on both '4a.' and '4b.' nodes.\n3. Activate the workflow, then copy the webhook URL from the 'Webhook' node.\n\nCall it from anywhere: Zapier, Make, your own backend, a CRM button. POST JSON with content + channelId (+ optional platform and date). No date = publishes immediately; with a date = schedules.\n\nRetry safety: to avoid duplicates on retries, add an Idempotency-Key header to the POST /posts call (see docs.postsider.com/api). Self-hosted PostSider? Replace api.postsider.com with your domain (add /api if needed).", "color": 3 }, "id": "a6b7c8d9-0009-4a5b-9c0d-999999999999", "name": "Setup notes", "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 0, -360 ] }, { "parameters": { "content": "SETUP STEP BY STEP\nFollow in order. Do this once per workflow.\n\nSTEP 1 - Create the n8n credential (Header Auth, do this once):\n \"PostSider API Key\": Name = Authorization, Value = your ps_ key (app.postsider.com > Settings > API > Create key).\n\nSTEP 2 - Activate the Webhook:\n Activate this workflow (toggle Active). The \"Webhook\" node shows a URL that any system can call: Zapier, Make, your backend, a CRM button.\n\nSTEP 3 - Select the \"PostSider API Key\" credential on:\n - \"4a. Schedule in PostSider\"\n - \"4b. Publish now in PostSider\"\n\nSTEP 4 - Call the webhook:\n POST JSON to the webhook URL with: text, channelId, and optionally a date (UTC ISO) to schedule. Without a date it publishes immediately.\n\nNOTE\nThe caller should supply an Idempotency-Key header for safe retries. Self-hosted PostSider? Replace api.postsider.com with your domain (add /api if your install serves the API under /api).", "height": 620, "width": 640, "color": 3 }, "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 0, -700 ], "id": "setup-step-webhook-publish", "name": "Setup step by step" } ], "connections": { "Webhook": { "main": [ [ { "node": "1. Normalize payload", "type": "main", "index": 0 } ] ] }, "1. Normalize payload": { "main": [ [ { "node": "2. Date provided?", "type": "main", "index": 0 } ] ] }, "2. Date provided?": { "main": [ [ { "node": "3a. Build schedule payload", "type": "main", "index": 0 } ], [ { "node": "3b. Build publish-now payload", "type": "main", "index": 0 } ] ] }, "3a. Build schedule payload": { "main": [ [ { "node": "4a. Schedule in PostSider", "type": "main", "index": 0 } ] ] }, "3b. Build publish-now payload": { "main": [ [ { "node": "4b. Publish now in PostSider", "type": "main", "index": 0 } ] ] } }, "settings": { "executionOrder": "v1" }, "pinData": {} }