n8n Workflow: Route Commodity Sample Approvals via Telegram & Claude

Route Commodity Sample Approvals with Telegram + Claude (n8n Workflow)

This n8n workflow automates the full commodity sample approval loop—from dispatch QR intake to evaluation and final pass/borderline/fail/needs_review decisions—using n8n Forms, Telegram notifications, and Anthropic (Claude) for data extraction.

What this workflow does

• Dispatch intake & QR labeling: When a sample dispatch is submitted via an n8n Form, the workflow generates a unique sample ID and a QR code that links to the arrival form. It also looks up the contract specification.
• Spec validation & registration: The sample is registered in n8n Data Tables, Google Sheets, or Microsoft Excel. A dispatch event is appended to a decision log, and dispatch is refused if no specification exists for the contract.
• Optional notifications: It can email the QR label using Microsoft Outlook and post a dispatch notification to a Telegram chat.
• Arrival receipt & SLA tracking: When a sample arrival is submitted via the arrival n8n Form, the workflow validates sample status, writes receipt details plus an SLA due timestamp, and logs the arrival.
• Evaluator prompts via Telegram: The workflow notifies Telegram and asks the evaluator to respond with a voice note, a photo of the grading sheet, or typed readings.
• Claude-powered decisioning: When a Telegram reply arrives, it extracts the sample ID from the replied-to arrival message, then uses Anthropic (Claude) to extract structured values from text or images (with optional voice transcription via an HTTP endpoint). Deterministic rules produce the final verdict: pass, borderline, fail, or needs_review.

Use cases

• Commodity suppliers and quality teams needing consistent sample dispatch and approval tracking.
• Faster intake workflows for lab results: Telegram-based evaluator collection with Claude structured extraction.
• Audit-ready records using decision logs and SLA due reminders.

Technical details

• n8n nodes/workflow blocks: if, set, code, form, switch, webhook
• LLM integration: Anthropic (Claude) for structured value extraction from text/images
• Messaging: Telegram notifications and evaluator replies
• Storage options: n8n Data Tables, Google Sheets, Microsoft Excel
• Email (optional): Microsoft Outlook
• Optional voice transcription: configured HTTP endpoint