The workflow JSON
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{
"name": "Devpost \u2014 Hackathons (direct upsert)",
"nodes": [
{
"parameters": {
"rule": {
"interval": [
{
"field": "hours",
"hoursInterval": 12
}
]
}
},
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.3,
"position": [
0,
0
],
"id": "40dvp001-0000-4000-8000-000000000001",
"name": "Schedule Trigger"
},
{
"parameters": {
"jsCode": "// === Devpost Hackathons API ===\n// Devpost exposes a public JSON listing endpoint that powers their UI.\n// Returns ~9-13k hackathons total; we only fetch open ones, capped to 20.\n//\n// Each result has structured fields, so we skip AI extract entirely\n// and construct the Opportunity object inline.\n\nconst MONTHS = {\n Jan: 1, Feb: 2, Mar: 3, Apr: 4, May: 5, Jun: 6,\n Jul: 7, Aug: 8, Sep: 9, Oct: 10, Nov: 11, Dec: 12,\n};\n\n// Strip HTML tags + decode common entities. Devpost wraps prize amounts\n// in <span data-currency-value>...</span> markup that leaks into our\n// description/compensation fields if rendered raw.\nfunction stripHtml(s) {\n if (!s) return '';\n return String(s)\n .replace(/<[^>]*>/g, ' ')\n .replace(/ /g, ' ')\n .replace(/&/g, '&')\n .replace(/</g, '<')\n .replace(/>/g, '>')\n .replace(/\\s+/g, ' ')\n .trim();\n}\n\n// \"Apr 09 - May 20, 2026\" \u2192 \"2026-05-20\". Returns null if unparseable.\nfunction parseDeadline(s) {\n if (!s) return null;\n const m = s.match(/-\\s*([A-Za-z]{3,9})\\s+(\\d{1,2}),?\\s*(\\d{4})/);\n if (!m) return null;\n const month = MONTHS[m[1].slice(0, 3)];\n if (!month) return null;\n const day = String(m[2]).padStart(2, '0');\n const mm = String(month).padStart(2, '0');\n return `${m[3]}-${mm}-${day}`;\n}\n\nlet data;\ntry {\n data = await this.helpers.httpRequest({\n method: 'GET',\n url: 'https://devpost.com/api/hackathons?status%5B%5D=open&per_page=20',\n json: true,\n headers: { Accept: 'application/json' },\n });\n} catch (e) {\n throw new Error('Devpost API fetch failed: ' + ((e && e.message) || e));\n}\n\nconst hackathons = Array.isArray(data && data.hackathons) ? data.hackathons : [];\nif (hackathons.length === 0) {\n throw new Error('Devpost returned 0 hackathons');\n}\n\nconst out = [];\nfor (const h of hackathons) {\n const orgName = stripHtml(h.organization_name) || 'Devpost';\n const location = stripHtml(\n (h.displayed_location && h.displayed_location.location) || 'Online'\n );\n const isRemote = location.toLowerCase().includes('online') ||\n location.toLowerCase().includes('remote') ||\n location.toLowerCase().includes('worldwide');\n const themes = Array.isArray(h.themes)\n ? h.themes.map(t => stripHtml((t && t.name) || '')).filter(Boolean)\n : [];\n const prizeAmount = stripHtml(h.prize_amount);\n const timeLeft = stripHtml(h.time_left_to_submission);\n const submissionWindow = stripHtml(h.submission_period_dates);\n const title = stripHtml(h.title);\n\n const descriptionParts = [];\n if (submissionWindow) descriptionParts.push(`Submission period: ${submissionWindow}`);\n if (prizeAmount) descriptionParts.push(`Prize pool: ${prizeAmount}`);\n if (h.registrations_count) descriptionParts.push(`${h.registrations_count.toLocaleString()} registered so far`);\n if (themes.length) descriptionParts.push(`Themes: ${themes.join(', ')}`);\n if (h.invite_only) descriptionParts.push('Invite-only event');\n\n const summary = `${orgName} hackathon \u2014 ${prizeAmount || 'prizes available'}, ${timeLeft || 'open for submissions'}.`;\n\n // Build Opportunity object that matches ExtractedOpportunitySchema exactly.\n const opportunity = {\n title: title,\n organization: orgName,\n category: 'hackathon',\n description: descriptionParts.join('. ') || null,\n summary: summary.length > 280 ? summary.slice(0, 277) + '...' : summary,\n tags: themes.slice(0, 6).map(t => t.toLowerCase()),\n deadline: parseDeadline(submissionWindow),\n eligibility: h.invite_only ? 'Invite only' : null,\n location: location,\n compensation: prizeAmount || null,\n is_remote: isRemote,\n apply_url: h.url,\n difficulty: null,\n estimated_value_score: null,\n // High confidence \u2014 pre-structured from source, not AI-extracted.\n extraction_confidence: 0.95,\n };\n\n out.push({ json: { opportunity, source_url: h.url } });\n}\n\nreturn out;"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
208,
0
],
"id": "40dvp001-0000-4000-8000-000000000002",
"name": "Fetch Devpost Hackathons"
},
{
"parameters": {
"maxItems": 15
},
"type": "n8n-nodes-base.limit",
"typeVersion": 1,
"position": [
416,
0
],
"id": "40dvp001-0000-4000-8000-000000000003",
"name": "Limit"
},
{
"parameters": {
"options": {
"reset": false
}
},
"type": "n8n-nodes-base.splitInBatches",
"typeVersion": 3,
"position": [
624,
0
],
"id": "40dvp001-0000-4000-8000-000000000004",
"name": "Loop Over Items"
},
{
"parameters": {
"method": "POST",
"url": "http://host.docker.internal:3000/api/ingest/check-exists",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "X-Ingest-Secret",
"value": "REPLACE_WITH_YOUR_INGEST_SHARED_SECRET"
}
]
},
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "source_url",
"value": "={{ $json.source_url }}"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.4,
"position": [
832,
0
],
"id": "40dvp001-0000-4000-8000-000000000005",
"name": "Check Exists"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 3
},
"conditions": [
{
"id": "n1",
"leftValue": "={{ $json.exists }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "false",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.3,
"position": [
1040,
0
],
"id": "40dvp001-0000-4000-8000-000000000006",
"name": "If New"
},
{
"parameters": {
"method": "POST",
"url": "http://host.docker.internal:3000/api/ingest/upsert",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "X-Ingest-Secret",
"value": "REPLACE_WITH_YOUR_INGEST_SHARED_SECRET"
}
]
},
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "opportunity",
"value": "={{ $('Loop Over Items').item.json.opportunity }}"
},
{
"name": "source_url",
"value": "={{ $('Loop Over Items').item.json.source_url }}"
},
{
"name": "source_name",
"value": "Devpost"
}
]
},
"options": {
"timeout": 15000
}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.4,
"position": [
1280,
-64
],
"id": "40dvp001-0000-4000-8000-000000000007",
"name": "Upsert Opportunity"
},
{
"parameters": {
"method": "POST",
"url": "http://host.docker.internal:3000/api/log",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "X-Ingest-Secret",
"value": "REPLACE_WITH_YOUR_INGEST_SHARED_SECRET"
}
]
},
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "status",
"value": "skipped_duplicate"
},
{
"name": "source_url",
"value": "={{ $('Loop Over Items').item.json.source_url }}"
},
{
"name": "source_name",
"value": "Devpost"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.4,
"position": [
1280,
272
],
"id": "40dvp001-0000-4000-8000-000000000008",
"name": "Log Duplicate"
}
],
"connections": {
"Schedule Trigger": {
"main": [
[
{
"node": "Fetch Devpost Hackathons",
"type": "main",
"index": 0
}
]
]
},
"Fetch Devpost Hackathons": {
"main": [
[
{
"node": "Limit",
"type": "main",
"index": 0
}
]
]
},
"Limit": {
"main": [
[
{
"node": "Loop Over Items",
"type": "main",
"index": 0
}
]
]
},
"Loop Over Items": {
"main": [
[],
[
{
"node": "Check Exists",
"type": "main",
"index": 0
}
]
]
},
"Check Exists": {
"main": [
[
{
"node": "If New",
"type": "main",
"index": 0
}
]
]
},
"If New": {
"main": [
[
{
"node": "Upsert Opportunity",
"type": "main",
"index": 0
}
],
[
{
"node": "Log Duplicate",
"type": "main",
"index": 0
}
]
]
},
"Upsert Opportunity": {
"main": [
[
{
"node": "Loop Over Items",
"type": "main",
"index": 0
}
]
]
},
"Log Duplicate": {
"main": [
[
{
"node": "Loop Over Items",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1",
"binaryMode": "separate"
},
"tags": []
}
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About this workflow
Devpost — Hackathons (direct upsert). Uses httpRequest. Scheduled trigger; 8 nodes.
Source: https://github.com/krishnagahlod/opportunity-os/blob/399dbb38874ec13c22922b64013cbc57a2845dc0/n8n-workflows/04-devpost-hackathons.json — original creator credit. Request a take-down →
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