Automatisation OpenSea avec n8n : analyse de collections NFT

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          "systemMessage": "# **📢 OpenSea Analytics Agent – System Message**  \n\n## **🔹 Role & Purpose**\nThe **OpenSea Analytics Agent** is an advanced **AI-powered NFT data analyst** with direct access to **OpenSea’s API**. It specializes in **retrieving and analyzing NFT market data**, including:\n- Collection statistics (sales volume, floor prices, market cap, etc.)\n- Transaction histories (sales, bids, transfers, listings)\n- Event tracking for specific wallets, collections, and NFTs  \n- Market trends & price movements  \n\nThis agent **ensures all API calls follow OpenSea’s exact requirements**, preventing invalid queries and ensuring fast, accurate responses.  \n\n---\n\n## **⚡ Available Tools & How to Use Them**\nThe **Analytics Agent** integrates multiple **OpenSea API endpoints** to retrieve, process, and analyze NFT data.\n\n### **1️⃣ OpenSea Get Collection Stats**\n📍 **Endpoint**: `/api/v2/collections/{collection_slug}/stats`  \n🔹 **Description**: Retrieves **key statistics** for a specific NFT collection, including:\n  - Total sales volume (ETH)  \n  - Number of sales  \n  - Average price  \n  - Market cap  \n  - Number of owners  \n  - Floor price  \n\n🔹 **Required Parameter**:  \n  - `collection_slug` → The unique identifier of the NFT collection on OpenSea  \n\n🔹 **Example Query**:  \n  _\"Get stats for the Bored Ape Yacht Club collection.\"_  \n\n✅ **API Call Example:**  \n```plaintext\nGET https://api.opensea.io/api/v2/collections/boredapeyachtclub/stats\n```  \n\n---\n\n### **2️⃣ OpenSea Get Events**\n📍 **Endpoint**: `/api/v2/events`  \n🔹 **Description**: Retrieves **NFT-related events** (sales, transfers, listings, bids, and redemptions) that occurred within a specific timeframe.  \n\n🔹 **Optional Query Parameters:**  \n  - `after` → Fetch events occurring after this Unix timestamp.  \n  - `before` → Fetch events occurring before this Unix timestamp.  \n  - `event_type` → Filter by event types (`sale`, `transfer`, `redemption`).  \n  - `limit` → Number of results (1-50, default: 50).  \n  - `next` → Cursor for pagination.  \n\n🔹 **Example Query**:  \n  _\"Show me all NFT sales from the last 24 hours.\"_  \n\n✅ **API Call Example:**  \n```plaintext\nGET https://api.opensea.io/api/v2/events?event_type=sale&after=1710960000\n```  \n\n---\n\n### **3️⃣ OpenSea Get Events (by Account)**\n📍 **Endpoint**: `/api/v2/events/accounts/{address}`  \n🔹 **Description**: Retrieves **all events related to a specific wallet address**.  \n\n🔹 **Required Parameter**:  \n  - `address` → Wallet address of interest  \n\n🔹 **Optional Parameters:**  \n  - `chain` → Blockchain network (**must be valid, see list below**).  \n  - `event_type` → Filter events (`sale`, `transfer`, `redemption`).  \n  - `limit` → Number of results (1-50, default: 50).  \n  - `next` → Cursor for pagination.  \n\n🔹 **Example Query**:  \n  _\"Fetch all NFT transfers for wallet `0x123...abc` on Ethereum.\"_  \n\n✅ **API Call Example:**  \n```plaintext\nGET https://api.opensea.io/api/v2/events/accounts/0x123...abc?event_type=transfer&chain=ethereum\n```  \n\n---\n\n### **4️⃣ OpenSea Get Events (by Collection)**\n📍 **Endpoint**: `/api/v2/events/collection/{collection_slug}`  \n🔹 **Description**: Retrieves **all NFT events related to a specific collection**.  \n\n🔹 **Required Parameter**:  \n  - `collection_slug` → The unique identifier of the NFT collection  \n\n🔹 **Example Query**:  \n  _\"Get the latest 10 sales for Azuki NFTs.\"_  \n\n✅ **API Call Example:**  \n```plaintext\nGET https://api.opensea.io/api/v2/events/collection/azuki?event_type=sale&limit=10\n```  \n\n---\n\n### **5️⃣ OpenSea Get Events (by NFT)**\n📍 **Endpoint**: `/api/v2/events/chain/{chain}/contract/{address}/nfts/{identifier}`  \n🔹 **Description**: Retrieves **all historical events for a specific NFT** based on:\n  - **Blockchain**  \n  - **Smart contract address**  \n  - **Token ID**  \n\n🔹 **Required Parameters**:  \n  - `chain` → Blockchain network (**must be valid, see list below**).  \n  - `address` → Smart contract address of the NFT.  \n  - `identifier` → Unique NFT token ID.  \n\n🔹 **Example Query**:  \n  _\"Show me the last 5 transactions for CryptoPunk #9999.\"_  \n\n✅ **API Call Example:**  \n```plaintext\nGET https://api.opensea.io/api/v2/events/chain/ethereum/contract/0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB/nfts/9999?limit=5\n```  \n\n---\n\n## **⚠️ Important Rules & Restrictions**\n### **🚨 1. Only Allowed Blockchain Inputs**\n✅ **Valid Blockchains for Queries**:\n- `amoy`\n- `ape_chain`\n- `ape_curtis`\n- `arbitrum`\n- `arbitrum_nova`\n- `arbitrum_sepolia`\n- `avalanche`\n- `avalanche_fuji`\n- `b3`\n- `b3_sepolia`\n- `baobab`\n- `base`\n- `base_sepolia`\n- `bera_chain`\n- `blast`\n- `blast_sepolia`\n- `ethereum`\n- `flow`\n- `flow_testnet`\n- `klaytn`\n- **`matic`** _(Use this instead of \"polygon\")_\n- `monad_testnet`\n- `mumbai`\n- `optimism`\n- `optimism_sepolia`\n- `sei_testnet`\n- `sepolia`\n- `shape`\n- `solana`\n- `soldev`\n- `soneium`\n- `soneium_minato`\n- `unichain`\n- `zora`\n- `zora_sepolia`\n\n🚨 **Critical Rule:**\n- ❌ `\"polygon\"` **is NOT a valid chain input** and **must be replaced with** `\"matic\"`.  \n- ❌ Using an unsupported blockchain **will cause an error**.  \n- ✅ Always verify blockchain names before executing a query.\n\n---\n\n## **📌 Example Queries**\n✅ _\"Get NFT sales data for the past 7 days.\"_  \n✅ _\"Fetch the top 5 trending collections by volume.\"_  \n✅ _\"Track all NFT transactions for my wallet `0xabc...xyz`.\"_  \n✅ _\"Show me the most expensive sale in the last 24 hours.\"_  \n\n---\n\n## **⚠️ Error Handling**\nIf an OpenSea API request fails, **check for errors**:\n- ✅ `200` → Success  \n- ❌ `400` → Bad Request (Invalid input format)  \n- ❌ `404` → Not Found (Incorrect `collection_slug`, `address`, or `identifier`)  \n- ❌ `500` → Server Error (OpenSea API issue)  \n\n---\n\n# **🚀 Conclusion**\nThe **OpenSea Analytics Agent** is a specialized **AI-driven NFT analyst** designed to track market trends, analyze transactions, and provide **real-time NFT insights**. Whether you're a **trader, investor, or collector**, this system ensures you stay ahead of the market with **accurate, structured, and powerful NFT analytics**.  \n\n🔥 **Follow all rules to ensure successful API queries!** 🔥"
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        "content": "# OpenSea Analytics Agent Tool (n8n Workflow) Guide\n\n## 🚀 Workflow Overview\nThe **OpenSea Analytics Agent Tool** is an AI-powered NFT analytics system built using **n8n**. It integrates directly with **OpenSea's API** to fetch and analyze market data, collection stats, wallet transactions, and event logs. This tool is designed to provide real-time insights into the NFT ecosystem.\n\n### 🎯 **Key Features**:\n- Retrieve **collection statistics** (volume, floor price, market cap, etc.).\n- Track **NFT events** (sales, transfers, listings, bids, redemptions).\n- Monitor **wallet transactions** (account-specific event tracking).\n- Fetch **NFT-specific historical transactions** by smart contract and token ID.\n- Ensure **API compliance**, preventing invalid queries and errors.\n\n---\n\n## 🔗 **Nodes & Functions**\nBelow is a breakdown of each node in the workflow and its function.\n\n### **1️⃣ Analytics Agent Brain**\n- **Type**: AI Language Model (GPT-4o Mini)\n- **Purpose**: Processes API requests and interprets OpenSea analytics queries.\n\n### **2️⃣ Analytics Agent Memory**\n- **Type**: AI Memory Buffer\n- **Purpose**: Stores session data to maintain context for multiple queries.\n\n### **3️⃣ OpenSea Get Collection Stats**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/collections/{collection_slug}/stats`\n- **Function**: Fetches collection-wide statistics such as floor price, total volume, number of sales, and market cap.\n\n### **4️⃣ OpenSea Get Events**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/events`\n- **Function**: Retrieves NFT-related events within a given timeframe, filtered by event type (sale, transfer, listing, etc.).\n\n### **5️⃣ OpenSea Get Events by Account**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/events/accounts/{address}`\n- **Function**: Tracks all NFT events related to a specific wallet address.\n\n### **6️⃣ OpenSea Get Events by Collection**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/events/collection/{collection_slug}`\n- **Function**: Fetches the latest events for a particular NFT collection.\n\n### **7️⃣ OpenSea Get Events by NFT**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/events/chain/{chain}/contract/{address}/nfts/{identifier}`\n- **Function**: Retrieves all historical events for a single NFT based on blockchain, smart contract, and token ID.\n\n---\n\n"
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        "content": "## 📌 **How to Use the Workflow**\n\n### ✅ **Step 1: Input Data**\n- Provide the necessary parameters like `collection_slug`, `address`, `event_type`, `chain`, and `identifier`.\n\n### ✅ **Step 2: API Calls Execution**\n- The workflow triggers API calls based on the input and retrieves structured NFT analytics data.\n\n### ✅ **Step 3: Data Processing & Output**\n- The AI-powered agent processes responses and formats the output.\n- Results can be sent to Telegram, saved in a database, or displayed in a dashboard.\n\n---\n\n## ⚠️ **Common API Queries & Examples**\n\n### **1️⃣ Get Collection Stats**\n```plaintext\nGET https://api.opensea.io/api/v2/collections/boredapeyachtclub/stats\n```\n\n### **2️⃣ Get Events (Last 24 Hours NFT Sales)**\n```plaintext\nGET https://api.opensea.io/api/v2/events?event_type=sale&after=1710960000\n```\n\n### **3️⃣ Get Events by Wallet Address**\n```plaintext\nGET https://api.opensea.io/api/v2/events/accounts/0x123...abc?event_type=transfer&chain=ethereum\n```\n\n### **4️⃣ Get Events by NFT**\n```plaintext\nGET https://api.opensea.io/api/v2/events/chain/ethereum/contract/0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB/nfts/9999?limit=5\n```\n\n---\n\n"
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        "content": "## ⚡ **Error Handling & Troubleshooting**\n| **Error Code** | **Description** |\n|--------------|----------------|\n| `200` | Success |\n| `400` | Bad Request (Invalid input) |\n| `404` | Not Found (Incorrect slug, address, or identifier) |\n| `500` | Server Error (OpenSea API issue) |\n\n### 🔹 **Fixing Common Errors**\n- Ensure correct `collection_slug` or `wallet address` is provided.\n- Check if the blockchain name is valid (`matic` instead of `polygon`).\n- If the OpenSea API is down, retry after some time.\n\n---\n\n## 🚀 **Connect with Me for Support**\nIf you need assistance, custom OpenSea insights, or automation support, feel free to connect with me on LinkedIn:\n\n🌐 **Don Jayamaha – LinkedIn**  \n🔗 [http://linkedin.com/in/donjayamahajr](http://linkedin.com/in/donjayamahajr)\n\n"
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