Get real-time NFT Marketplace insights with OpenSea Marketplace Agent Tool
Needs changesNeeds changes. This template uses 2 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes), HTTP Request Tool (legacy). 2 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 14 nodes and runs when another workflow calls it. Along the way it connects OpenAI Chat Model and HTTP Request. It also calls api.opensea.io over HTTP.
How it runs
Trigger: When another workflow calls it.
- OpenSea Marketplace Agent (AI Agent): runs an AI agent, with model: Marketplace Agent Brain; 10 tools (OpenSea Get Order, OpenSea Get Listings, OpenSea Get Item Offers, OpenSea Get Trait Offers…); memory: Marketplace Agent Memory
Services it uses
HTTP calls to: api.opensea.io
Before you upgrade to n8n 3.0
2 things in this workflow are removed in n8n 3.0. Fix them before you upgrade:
- AI Agent v1 (old agent modes) in OpenSea Marketplace Agent (v1.8): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
- HTTP Request Tool (legacy) in OpenSea Get All Listings by Collection, OpenSea Get All Offers by Collection, OpenSea Get Best Listing by NFT…: replace with HTTP Request node connected to the AI Agent's Tool input.
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) OpenSea Marketplace Agent (v1.8) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
| HTTP Request Tool (legacy) OpenSea Get All Listings by Collection, OpenSea Get All Offers by Collection, OpenSea Get Best Listing by NFT, OpenSea Get Best Listings by Collection, OpenSea Get Best Offer by NFT, OpenSea Get Collection Offers, OpenSea Get Item Offers, OpenSea Get Listings, OpenSea Get Trait Offers, OpenSea Get Order | HTTP Request node connected to the AI Agent's Tool input |
Nodes used (5)
- OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - AI Agent
@n8n/n8n-nodes-langchain.agent - Execute Workflow Trigger
n8n-nodes-base.executeWorkflowTrigger - HTTP Request Tool
@n8n/n8n-nodes-langchain.toolHttpRequest
From the author
Track NFT listings, offers, orders, and trait-based pricing in real time! This workflow integrates OpenSea API, AI-powered analytics (GPT-4o-mini), and n8n automation to provide instant insights into NFT trading activity. Ideal for NFT traders, collectors,…