{
  "id": "brRSLvIkYp3mLq0K",
  "meta": {
    "instanceId": "a5283507e1917a33cc3ae615b2e7d5ad2c1e50955e6f831272ddd5ab816f3fb6"
  },
  "name": "OpenSea Marketplace Agent Tool",
  "tags": [],
  "nodes": [
    {
      "id": "13579b30-83df-4da6-b0de-90eeaf3252e7",
      "name": "Marketplace Agent Brain",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -300,
        -260
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "yUizd8t0sD5wMYVG",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "9f979fae-49c6-4a50-b96b-92de5a49ba14",
      "name": "Marketplace Agent Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        -120,
        -260
      ],
      "parameters": {},
      "typeVersion": 1.3
    },
    {
      "id": "202ca463-f038-46df-99ea-84fbda70a933",
      "name": "OpenSea Marketplace Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        420,
        -540
      ],
      "parameters": {
        "text": "={{ $json.message }}",
        "options": {
          "systemMessage": "### **🛒 OpenSea Marketplace Agent Overview**\nThis agent interacts with the OpenSea marketplace API to retrieve marketplace data, including NFT listings, offers, orders, and trait-specific data. The system follows strict input requirements to ensure compatibility with OpenSea API rules.\n\n---\n\n## **⚡ Available Tools & Usage Guidelines**\nThe OpenSea Marketplace Agent has access to the following marketplace-related tools:\n\n---\n\n### **1️⃣ Get All Listings (by Collection)**\n📍 **Endpoint**: `/api/v2/listings/collection/{collection_slug}/all`  \n🔹 **Description**: Retrieves all active, valid listings for a given collection.  \n🔹 **Required Parameter**:  \n   - `collection_slug` → The unique collection identifier from OpenSea.  \n🔹 **Optional Query Parameters**:  \n   - `limit` → Number of listings to return (1-100, default: 100).  \n   - `next` → Cursor for pagination.  \n🔹 **Example Query**:  \n   - _\"Retrieve all active listings for the 'boredapeyachtclub' collection.\"_  \n\n---\n\n### **2️⃣ Get All Offers (by Collection)**\n📍 **Endpoint**: `/api/v2/offers/collection/{collection_slug}/all`  \n🔹 **Description**: Retrieves all valid offers for a given NFT collection, including individual and criteria-based offers.  \n🔹 **Required Parameter**:  \n   - `collection_slug` → The unique collection identifier from OpenSea.  \n🔹 **Optional Query Parameters**:  \n   - `limit` → Number of offers to return (1-100, default: 100).  \n   - `next` → Cursor for pagination.  \n🔹 **Example Query**:  \n   - _\"Fetch all current offers for 'azuki' collection.\"_  \n\n---\n\n### **3️⃣ Get Best Listing (by NFT)**  \n📍 **Endpoint**: `/api/v2/listings/collection/{collection_slug}/nfts/{identifier}/best`  \n🔹 **Description**: Retrieves the best (cheapest) active listing for a specific NFT.  \n🔹 **Required Parameters**:  \n   - `collection_slug` → The collection identifier.  \n   - `identifier` → The NFT token ID.  \n🔹 **Optional Query Parameters**:  \n   - `include_private_listings` → Boolean (default: `false`).  \n🔹 **Example Query**:  \n   - _\"Find the lowest-priced listing for NFT #1234 in 'doodles' collection.\"_  \n\n---\n\n### **4️⃣ Get Best Listings (by Collection)**  \n📍 **Endpoint**: `/api/v2/listings/collection/{collection_slug}/best`  \n🔹 **Description**: Retrieves the lowest-priced active listings for a specific collection.  \n🔹 **Required Parameter**:  \n   - `collection_slug` → The collection identifier.  \n🔹 **Optional Query Parameters**:  \n   - `include_private_listings` → Boolean (default: `false`).  \n   - `limit` → Number of listings to return (1-100, default: 100).  \n   - `next` → Cursor for pagination.  \n🔹 **Example Query**:  \n   - _\"Get the 10 cheapest listings for 'mutantapeyachtclub'.\"_  \n\n---\n\n### **5️⃣ Get Best Offer (by NFT)**  \n📍 **Endpoint**: `/api/v2/offers/collection/{collection_slug}/nfts/{identifier}/best`  \n🔹 **Description**: Retrieves the highest offer made for a specific NFT.  \n🔹 **Required Parameters**:  \n   - `collection_slug` → The collection identifier.  \n   - `identifier` → The NFT token ID.  \n🔹 **Example Query**:  \n   - _\"Find the highest offer for NFT #5678 in 'moonbirds' collection.\"_  \n\n---\n\n### **6️⃣ Get Collection Offers**  \n📍 **Endpoint**: `/api/v2/offers/collection/{collection_slug}`  \n🔹 **Description**: Retrieves all active collection-wide offers for a specific NFT collection.  \n🔹 **Required Parameter**:  \n   - `collection_slug` → The collection identifier.  \n🔹 **Example Query**:  \n   - _\"List all collection offers for 'clonex'.\"_  \n\n---\n\n### **7️⃣ Get Item Offers**  \n📍 **Endpoint**: `/api/v2/orders/{chain}/{protocol}/offers`  \n🔹 **Description**: Retrieves all valid **individual** offers (excluding criteria-based offers).  \n🔹 **Required Parameters**:  \n   - `chain` → The blockchain network (must use an **allowed chain**, see below).  \n   - `protocol` → The token settlement protocol (only `\"seaport\"` is supported).  \n🔹 **Optional Query Parameters**:  \n   - `asset_contract_address`, `cursor`, `limit`, `listed_after`, `listed_before`, `maker`, `order_by`, `order_direction`, `payment_token_address`, `taker`, `token_ids`.  \n🔹 **Example Query**:  \n   - _\"Fetch all active item offers for NFTs on Ethereum using Seaport protocol.\"_  \n\n---\n\n### **8️⃣ Get Listings (by Chain & Protocol)**  \n📍 **Endpoint**: `/api/v2/orders/{chain}/{protocol}/listings`  \n🔹 **Description**: Retrieves all active listings filtered by blockchain and protocol.  \n🔹 **Required Parameters**:  \n   - `chain` → The blockchain network (**must be an allowed chain**).  \n   - `protocol` → `\"seaport\"` protocol.  \n🔹 **Optional Query Parameters**:  \n   - `asset_contract_address`, `cursor`, `limit`, `listed_after`, `listed_before`, `maker`, `order_by`, `order_direction`, `payment_token_address`, `taker`, `token_ids`.  \n🔹 **Example Query**:  \n   - _\"Retrieve all active listings for Ethereum Seaport orders.\"_  \n\n---\n\n### **9️⃣ Get Order (Single Order by Hash)**  \n📍 **Endpoint**: `/api/v2/orders/chain/{chain}/protocol/{protocol_address}/{order_hash}`  \n🔹 **Description**: Retrieves a specific order (offer or listing) based on its hash.  \n🔹 **Required Parameters**:  \n   - `chain` → The blockchain network (**must be an allowed chain**).  \n   - `protocol_address` → **Always set to** `0x0000000000000068f116a894984e2db1123eb395`.  \n   - `order_hash` → The hash of the order.  \n🔹 **Example Query**:  \n   - _\"Fetch details for order `0x123abc...` on Ethereum.\"_  \n\n---\n\n### **🔟 Get Trait Offers**  \n📍 **Endpoint**: `/api/v2/offers/collection/{collection_slug}/traits`  \n🔹 **Description**: Retrieves all active offers made for a specific trait in a collection.  \n🔹 **Required Parameter**:  \n   - `collection_slug` → The collection identifier.  \n🔹 **Optional Query Parameters**:  \n   - `float_value`, `int_value`, `type`, `value`.  \n🔹 **Example Query**:  \n   - _\"Find all offers for 'Background: Blue' in the 'azuki' collection.\"_  \n\n---\n\n## **⚠️ Critical Notes & Restrictions**\n1. **Only Allowed Blockchains Can Be Used**  \n   - ✅ Supported Chains:  \n     - `amoy`, `ape_chain`, `ape_curtis`, `arbitrum`, `arbitrum_nova`, `arbitrum_sepolia`, `avalanche`, `avalanche_fuji`, `b3`, `b3_sepolia`, `baobab`, `base`, `base_sepolia`, `bera_chain`, `blast`, `blast_sepolia`, `ethereum`, `flow`, `flow_testnet`, `klaytn`, `matic`, `monad_testnet`, `mumbai`, `optimism`, `optimism_sepolia`, `sei_testnet`, `sepolia`, `shape`, `solana`, `soldev`, `soneium`, `soneium_minato`, `unichain`, `zora`, `zora_sepolia`.  \n   - ❌ **Incorrect Chain Inputs Will Cause Errors**  \n     - `\"polygon\"` ❌ **will fail**. Use `\"matic\"` instead.\n\n2. **Protocol Must Be `\"seaport\"` for Item & Listing Queries**  \n   - The `\"protocol\"` field must always be set to `\"seaport\"`.\n\n3. **Fixed Protocol Address for Get Order**  \n   - **For retrieving a specific order**, the `protocol_address` **must always be**:  \n     - `0x0000000000000068f116a894984e2db1123eb395`.\n\n---\n\n## **✅ Example Queries**\n- _\"Fetch all best listings for Ethereum NFTs.\"_  \n- _\"Find the highest offer for a Bored Ape #456.\"_  \n- _\"Get details for a specific order hash.\"_  \n\n🚀 **Follow these rules to ensure successful API queries!**"
        },
        "promptType": "define"
      },
      "typeVersion": 1.8
    },
    {
      "id": "c055762a-8fe7-4141-a639-df2372f30060",
      "name": "Workflow Input Trigger",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        -60,
        -540
      ],
      "parameters": {
        "workflowInputs": {
          "values": [
            {
              "name": "message"
            },
            {
              "name": "sessionId"
            }
          ]
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "e25c62f0-1047-4fbb-815c-caeaa22d2fe1",
      "name": "OpenSea Get All Listings by Collection",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        60,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/listings/collection/{collection_slug}/all",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "limit",
              "valueProvider": "modelOptional"
            },
            {
              "name": "next",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves all active, valid listings for a single NFT collection on OpenSea, allowing pagination and limit options.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "d568d5de-82e4-4be1-b9e9-9ec56ca9d872",
      "name": "OpenSea Get All Offers by Collection",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        240,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/offers/collection/{collection_slug}/all",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "limit",
              "valueProvider": "modelOptional"
            },
            {
              "name": "next",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves all active, valid offers for a specified NFT collection on OpenSea, including individual and criteria offers.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "1b591b2d-787f-4519-9dfc-fc0489bc0725",
      "name": "OpenSea Get Best Listing by NFT",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        440,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/listings/collection/{collection_slug}/nfts/{identifier}/best",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "include_private_listings",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves the best available listing for a specific NFT from OpenSea.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "33222cfb-17c7-4507-8d09-fa0a7ba1beae",
      "name": "OpenSea Get Best Listings by Collection",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        640,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/listings/collection/{collection_slug}/best",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "include_private_listings",
              "valueProvider": "modelOptional"
            },
            {
              "name": "limit",
              "valueProvider": "modelOptional"
            },
            {
              "name": "next",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves the cheapest active and valid listings for a specific NFT collection on OpenSea.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "7fd0ddd6-96eb-487d-b7a2-b8fcb29b4e22",
      "name": "OpenSea Get Best Offer by NFT",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        860,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/offers/collection/{collection_slug}/nfts/{identifier}/best",
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "toolDescription": "This tool retrieves the best offers for a specific NFT on OpenSea.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "7047b8bc-ea5e-4b9b-9230-0fc46c46c58f",
      "name": "OpenSea Get Collection Offers",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1080,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/offers/collection/{collection_slug}",
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "toolDescription": "This tool retrieves the active, valid collection offers for a specified NFT collection on OpenSea.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "cab63cc4-96b4-4e14-8eb7-9fca08791040",
      "name": "OpenSea Get Item Offers",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1300,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/orders/{chain}/{protocol}/offers",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "asset_contract_address",
              "valueProvider": "modelOptional"
            },
            {
              "name": "cursor",
              "valueProvider": "modelOptional"
            },
            {
              "name": "limit",
              "valueProvider": "modelOptional"
            },
            {
              "name": "listed_after",
              "valueProvider": "modelOptional"
            },
            {
              "name": "listed_before",
              "valueProvider": "modelOptional"
            },
            {
              "name": "maker",
              "valueProvider": "modelOptional"
            },
            {
              "name": "order_by",
              "valueProvider": "modelOptional"
            },
            {
              "name": "order_direction",
              "valueProvider": "modelOptional"
            },
            {
              "name": "payment_token_address",
              "valueProvider": "modelOptional"
            },
            {
              "name": "taker",
              "valueProvider": "modelOptional"
            },
            {
              "name": "token_ids",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves active, valid individual offers for NFTs on OpenSea. It does not include criteria offers.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "63760966-bbec-466d-83dc-a52b235df43a",
      "name": "OpenSea Get Listings",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1500,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/orders/{chain}/{protocol}/listings",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "asset_contract_address",
              "valueProvider": "modelOptional"
            },
            {
              "name": "cursor",
              "valueProvider": "modelOptional"
            },
            {
              "name": "limit",
              "valueProvider": "modelOptional"
            },
            {
              "name": "listed_after",
              "valueProvider": "modelOptional"
            },
            {
              "name": "listed_before",
              "valueProvider": "modelOptional"
            },
            {
              "name": "maker",
              "valueProvider": "modelOptional"
            },
            {
              "name": "order_by",
              "valueProvider": "modelOptional"
            },
            {
              "name": "order_direction",
              "valueProvider": "modelOptional"
            },
            {
              "name": "payment_token_address",
              "valueProvider": "modelOptional"
            },
            {
              "name": "taker",
              "valueProvider": "modelOptional"
            },
            {
              "name": "token_ids",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves the complete set of active, valid listings for NFTs on OpenSea.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "d0365a8a-dfd4-4a86-88cf-4e8ccbdf6c36",
      "name": "OpenSea Get Trait Offers",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1900,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/offers/collection/{collection_slug}/traits",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "float_value",
              "valueProvider": "modelOptional"
            },
            {
              "name": "int_value",
              "valueProvider": "modelOptional"
            },
            {
              "name": "type",
              "valueProvider": "modelOptional"
            },
            {
              "name": "value",
              "valueProvider": "modelOptional"
            }
          ]
        },
        "toolDescription": "This tool retrieves the active, valid trait offers for a specified collection on OpenSea.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "148a00a5-d8f4-4708-9afd-b1111f7d71bd",
      "name": "OpenSea Get Order",
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "position": [
        1700,
        -260
      ],
      "parameters": {
        "url": "https://api.opensea.io/api/v2/orders/chain/{chain}/protocol/0x0000000000000068f116a894984e2db1123eb395/{order_hash}",
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "parametersQuery": {
          "values": [
            {
              "name": "chain"
            },
            {
              "name": "order_hash"
            }
          ]
        },
        "toolDescription": "This tool retrieves a single order (offer or listing) from OpenSea using its order hash. Protocol and Chain are required to prevent hash collisions. The protocol address is always set to 0x0000000000000068f116a894984e2db1123eb395.",
        "parametersHeaders": {
          "values": [
            {
              "name": "Accept",
              "value": "application/json",
              "valueProvider": "fieldValue"
            }
          ]
        }
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3v99GVMGF4tKP5nM",
          "name": "OpenSea"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "2b616d18-f719-42dd-a616-d91ae11be009",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -2080,
        -1840
      ],
      "parameters": {
        "color": 2,
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        "content": "# OpenSea Marketplace Agent Tool (n8n Workflow) Guide\n\n## 🚀 Workflow Overview\nThe **OpenSea Marketplace Agent Tool** is an **AI-driven marketplace analytics system** for **NFT trading insights**. This tool integrates with **OpenSea's API** to fetch and analyze **NFT listings, offers, orders, and trait-specific data**, helping traders and collectors make informed decisions.\n\n### 🎯 **Key Features**:\n- Retrieve **active NFT listings** for a collection.\n- Fetch **valid offers** for individual NFTs or entire collections.\n- Find the **cheapest available NFT listings** by collection or NFT.\n- Track **the highest offer** made for an NFT or collection-wide offers.\n- Access **detailed order data** based on order hash.\n- Ensure **API query compliance** to prevent errors.\n\n---\n\n## 🔗 **Nodes & Functions**\n### **1️⃣ Marketplace Agent Brain**\n- **Type**: AI Language Model (GPT-4o Mini)\n- **Purpose**: Processes marketplace-related API requests and user queries.\n\n### **2️⃣ Marketplace Agent Memory**\n- **Type**: AI Memory Buffer\n- **Purpose**: Stores session data to maintain context across multiple queries.\n\n### **3️⃣ OpenSea Get All Listings by Collection**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/listings/collection/{collection_slug}/all`\n- **Function**: Retrieves all active listings for a given collection.\n\n### **4️⃣ OpenSea Get All Offers by Collection**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/offers/collection/{collection_slug}/all`\n- **Function**: Fetches all active offers made for NFTs in a collection.\n\n### **5️⃣ OpenSea Get Best Listing by NFT**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/listings/collection/{collection_slug}/nfts/{identifier}/best`\n- **Function**: Retrieves the **lowest-priced** active listing for a specific NFT.\n\n### **6️⃣ OpenSea Get Best Listings by Collection**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/listings/collection/{collection_slug}/best`\n- **Function**: Fetches the **cheapest listings** for a given NFT collection.\n\n### **7️⃣ OpenSea Get Best Offer by NFT**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/offers/collection/{collection_slug}/nfts/{identifier}/best`\n- **Function**: Retrieves the **highest offer** made for a specific NFT.\n\n### **8️⃣ OpenSea Get Collection Offers**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/offers/collection/{collection_slug}`\n- **Function**: Retrieves all **active collection-wide offers**.\n\n### **9️⃣ OpenSea Get Item Offers**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/orders/{chain}/{protocol}/offers`\n- **Function**: Fetches **individual active offers** (excluding criteria-based offers).\n\n### **🔟 OpenSea Get Listings by Chain & Protocol**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/orders/{chain}/{protocol}/listings`\n- **Function**: Retrieves all active **listings filtered by blockchain and protocol**.\n\n### **11️⃣ OpenSea Get Order by Hash**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/orders/chain/{chain}/protocol/0x0000000000000068f116a894984e2db1123eb395/{order_hash}`\n- **Function**: Fetches **a specific order (listing or offer)** based on its order hash.\n\n### **12️⃣ OpenSea Get Trait Offers**\n- **Type**: API Request\n- **Endpoint**: `/api/v2/offers/collection/{collection_slug}/traits`\n- **Function**: Retrieves **active offers** for specific traits in a collection.\n\n---\n\n"
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        "content": "\n## 📌 **How to Use the Workflow**\n\n### ✅ **Step 1: Input Data**\n- Provide required parameters such as `collection_slug`, `identifier`, `chain`, `protocol`, or `order_hash`.\n\n### ✅ **Step 2: Execute API Calls**\n- The system processes requests and fetches NFT marketplace data.\n\n### ✅ **Step 3: Analyze & Output Results**\n- Results can be integrated into dashboards, alerts, or Telegram notifications.\n\n---\n\n## ⚠️ **Common API Queries & Examples**\n\n### **1️⃣ Get All Listings for a Collection**\n```plaintext\nGET https://api.opensea.io/api/v2/listings/collection/boredapeyachtclub/all\n```\n\n### **2️⃣ Get All Offers for a Collection**\n```plaintext\nGET https://api.opensea.io/api/v2/offers/collection/azuki/all\n```\n\n### **3️⃣ Get Best Listing for an NFT**\n```plaintext\nGET https://api.opensea.io/api/v2/listings/collection/doodles/nfts/1234/best\n```\n\n### **4️⃣ Get Best Offer for an NFT**\n```plaintext\nGET https://api.opensea.io/api/v2/offers/collection/moonbirds/nfts/5678/best\n```\n\n### **5️⃣ Get Order Details by Order Hash**\n```plaintext\nGET https://api.opensea.io/api/v2/orders/chain/ethereum/protocol/0x0000000000000068f116a894984e2db1123eb395/0x123abc...\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** and **NFT identifier**.\n- Always use `\"matic\"` instead of `\"polygon\"` for chain input.\n- Verify that the **protocol is set to `\"seaport\"`** where required.\n- **Order hash queries require the fixed protocol address:** `0x0000000000000068f116a894984e2db1123eb395`.\n- Retry after some time if the OpenSea API is experiencing downtime.\n\n---\n\n## 🚀 **Connect with Me for Support**\nIf you need assistance, custom OpenSea marketplace 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"
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