Automate DevRel Weekly Digest via Telegram

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": "DevRel Weekly Digest (weekly-digest)",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "cronExpression",
              "expression": "0 9 * * 1"
            }
          ]
        }
      },
      "id": "schedule-trigger-weekly",
      "name": "Schedule Monday 09:00 ART",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.1,
      "position": [
        240,
        300
      ],
      "notes": "Cron: 0 9 * * 1 (ART, via GENERIC_TIMEZONE). Fires Monday 09:00 ART = 12:00 UTC."
    },
    {
      "parameters": {
        "command": "=python3 {{ $env.WALTER_OS_DIR || '/opt/walter-os' }}/skills/devrel-analyst/scripts/query.py weekly_digest 2>&1"
      },
      "id": "run-weekly-digest",
      "name": "Run devrel-analyst weekly_digest",
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        460,
        300
      ],
      "notes": "Invokes devrel-analyst skill (AC-13) to produce the weekly digest markdown. Uses ANALYTICS_DB_URL env var for DB connection."
    },
    {
      "parameters": {
        "jsCode": "// Compute ISO week filename using Intl.DateTimeFormat (spec-compliant, ISO 8601 compliant)\nconst now = new Date();\nconst weekNum = parseInt(\n  new Intl.DateTimeFormat('en', { weekYear: 'numeric', week: 'numeric' })\n    .formatToParts(now)\n    .find(p => p.type === 'week').value,\n  10\n);\nconst year = parseInt(\n  new Intl.DateTimeFormat('en', { weekYear: 'numeric', week: 'numeric' })\n    .formatToParts(now)\n    .find(p => p.type === 'weekYear').value,\n  10\n);\nconst weekStr = String(weekNum).padStart(2, '0');\nconst isoWeek = `${year}-W${weekStr}`;\nconst filename = `weekly-${isoWeek}.md`;\n\nconst digestContent = $json.stdout || $json.output || '';\nconst exitCode = $json.exitCode || 0;\n\nif (exitCode !== 0) {\n  return [{ json: {\n    success: false,\n    error: $json.stderr || 'digest generation failed',\n    filename\n  }}];\n}\n\nreturn [{ json: { success: true, content: digestContent, filename, isoWeek } }];"
      },
      "id": "prepare-digest-file",
      "name": "Prepare Digest File",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        680,
        300
      ]
    },
    {
      "parameters": {
        "conditions": {
          "boolean": [
            {
              "value1": "={{ $json.success }}",
              "value2": true
            }
          ]
        }
      },
      "id": "digest-success",
      "name": "Digest OK?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 1,
      "position": [
        900,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "// Write digest to wiki via stdin pipe (no heredoc \u2014 avoids shell injection in content)\nconst content = $('Prepare Digest File').first().json.content;\nconst filename = $('Prepare Digest File').first().json.filename;\nconst wikiDir = process.env.WIKI_SYNC_DIR || '/files/wiki';\nconst fullPath = `${wikiDir}/devrel/insights/${filename}`;\nconst b64 = Buffer.from(content, 'utf8').toString('base64');\n\nreturn [{ json: {\n  write_command: `mkdir -p '${wikiDir}/devrel/insights' && echo '${b64}' | base64 -d > '${fullPath}'`,\n  fullPath,\n  filename\n} }];"
      },
      "id": "build-write-command",
      "name": "Build Write Command",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        1120,
        200
      ]
    },
    {
      "parameters": {
        "command": "={{ $json.write_command }}"
      },
      "id": "write-to-wiki",
      "name": "Write to Wiki Sync Dir",
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        1340,
        200
      ]
    },
    {
      "parameters": {
        "chatId": "={{ $env.WALTER_TELEGRAM_CHAT_ID }}",
        "text": "=\ud83d\udcca *DevRel Weekly Digest ready*\n\nWeek: {{ $('Prepare Digest File').first().json.isoWeek }}\nFile: `~/sync/wiki/devrel/insights/{{ $('Prepare Digest File').first().json.filename }}`\n\nHighlights available in the wiki digest.",
        "additionalFields": {
          "parse_mode": "Markdown"
        }
      },
      "id": "telegram-digest-notification",
      "name": "Telegram Digest Notification",
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1,
      "position": [
        1560,
        200
      ],
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      },
      "onError": "continueRegularOutput",
      "notes": "Sends Telegram notification with link to the weekly digest wiki page (AC-14)."
    },
    {
      "parameters": {
        "chatId": "={{ $env.WALTER_TELEGRAM_CHAT_ID }}",
        "text": "=\u26a0\ufe0f DevRel Weekly Digest FAILED\n\nError: {{ $json.error }}\n\nCheck n8n execution log for details.",
        "additionalFields": {}
      },
      "id": "telegram-digest-error",
      "name": "Telegram Error",
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1,
      "position": [
        1120,
        420
      ],
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      },
      "onError": "continueRegularOutput"
    }
  ],
  "connections": {
    "Schedule Monday 09:00 ART": {
      "main": [
        [
          {
            "node": "Run devrel-analyst weekly_digest",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Run devrel-analyst weekly_digest": {
      "main": [
        [
          {
            "node": "Prepare Digest File",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Prepare Digest File": {
      "main": [
        [
          {
            "node": "Digest OK?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Digest OK?": {
      "main": [
        [
          {
            "node": "Build Write Command",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Telegram Error",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Build Write Command": {
      "main": [
        [
          {
            "node": "Write to Wiki Sync Dir",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Write to Wiki Sync Dir": {
      "main": [
        [
          {
            "node": "Telegram Digest Notification",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true
  },
  "tags": [
    "devrel-analytics",
    "weekly-digest",
    "automation"
  ],
  "versionId": "v1",
  "notes": "Phase V Part D \u2014 AC-14. Runs Monday 09:00 ART. Invokes devrel-analyst weekly_digest skill \u2192 writes markdown to ~/sync/wiki/devrel/insights/weekly-<YYYY-WW>.md \u2192 Telegram notification. Activate after Tier 1 ingestion is running (need 7+ days of data). See docs/specs/devrel-analytics-stack.md."
}

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.

• telegramApi

About this workflow

DevRel Weekly Digest (weekly-digest). Uses executeCommand, telegram. Scheduled trigger; 8 nodes.

Source: https://github.com/Xipher-Labs/walter-os/blob/main/setup/walter-host/services/n8n/workflows/weekly-digest.json — original creator credit. Request a take-down →

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