Run multi-agent procurement approvals with Anthropic Claude, Slack and Postgres

by Oneclick AI Squad ✓ · 14 views · created 2026-09-29 · CRM, AI Chatbot

What this workflow does

This workflow has 29 nodes and runs manually, when you click “Execute workflow” (plus 1 other trigger). Along the way it connects Postgres and Slack. It also calls api.anthropic.com over HTTP.

How it runs

Trigger: Manually, when you click “Execute workflow” (plus 1 other trigger).

1. Set - Procurement Config (Edit Fields (Set)): sets 6 fields: anthropicModel, slackChannel, autoApproveLimit…
2. JS - Normalize Procurement Request (Code): runs custom JavaScript code
3. HTTP Request: calls api.anthropic.com (POST)
4. JS - Parse Procurement Plan (Code): runs custom JavaScript code
5. JS - Split Suppliers (Code): runs custom JavaScript code
6. Loop Over Suppliers (Loop Over Items (Split in Batches)): loops over the items in batches
7. JS - Rank Offers (Code): runs custom JavaScript code
8. JS - Prepare Negotiation Round (Code): runs custom JavaScript code
9. HTTP Request: calls api.anthropic.com (POST)
10. HTTP Request: calls api.anthropic.com (POST)

…plus 17 more steps. See the full node list below.

Services it uses

PostgresSlack

HTTP calls to: api.anthropic.com

Before you upgrade to n8n 3.0

Nodes used (11)

• Manual Triggern8n-nodes-base.manualTrigger
• Webhookn8n-nodes-base.webhook
• Edit Fields (Set)n8n-nodes-base.set
• Coden8n-nodes-base.code
• HTTP Requestn8n-nodes-base.httpRequest
• Loop Over Items (Split in Batches)n8n-nodes-base.splitInBatches
• Ifn8n-nodes-base.if
• Postgresn8n-nodes-base.postgres
• Switchn8n-nodes-base.switch
• Slackn8n-nodes-base.slack
• Waitn8n-nodes-base.wait

From the author

Quick overview This workflow accepts a procurement request via webhook or manual trigger, uses Anthropic Claude agents to plan, negotiate, validate, and decide on supplier offers, escalates approvals to Slack when needed, and stores the full offer and…

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