move execute out to be api endpoint

apps/portal/src/app/nebula/api-reference/page.mdx

@@ -7,7 +7,7 @@ Nebula provides a conversational interface to interact with blockchain data and
 - [Base URL](#base-url)
 - [Authentication](#authentication)
 - [Sessions](#sessions)
-- [Context Filtering](#context-filtering)
+- [Context Filters](#context-filtering)
 - [Execute Configuration](#execute-configuration)
 - [Response Handling](#response-handling)
 - [API Endpoints](#api-endpoints)
@@ -57,22 +57,24 @@ Sessions maintain conversation threads with the AI and can be:
 
 Sessions persist your conversation history and custom configurations for blockchain data and thirdweb tools interactions.
 
-## Context Filtering
+## Context Filters
 
 Control what blockchain data informs AI responses through context filtering:
 
 ```json
 {
   "context_filter": {
-    "chain_ids": [1],              // Ethereum mainnet
-    "contract_addresses": ["0x..."] // Target contract address
+    "chain_ids": [1],              // comma delimited list of chain ID's
+    "contract_addresses": ["0x..."], // Comma delimited list of contract addresses
+    "wallet_addresses": ["0x..."] // Comma delimited list of wallet addresses
   }
 }
 ```
 
 Benefits:
 - Filter by blockchain networks using chain IDs
 - Target specific contract addresses
+- Target specific wallet addresses
 - Control context scope for relevant responses
 - Optimize token usage and response relevance
 
@@ -108,13 +110,7 @@ When `stream: false`, the API returns a single JSON response:
   "result": {
     "message": "The last 5 blocks on polygon are...",
     "session_id": "abc",
-    "message_id": "1234",
-    "created_at": "2024-01-01T00:00:00Z",
-    "usage": {
-      "prompt_tokens": 10,
-      "completion_tokens": 15,
-      "total_tokens": 25 
-    }
+    "message_id": "1234"
   }
 }
 ```
@@ -224,7 +220,8 @@ POST /chat
   "stream": true,                
   "context_filter": {            
     "chain_ids": [137],          
-    "contract_addresses": ["0x.."]
+    "contract_addresses": ["0x..."],
+    "wallet_addresses": ["0x..."]
   },
   "execute_config": {            
     "mode": "client",
@@ -405,8 +402,7 @@ const data = await response.json();
 const result = await handleNebulaResponse(data);
 ```
 
-#### Execute Command
-
+### Execute
 
 
 ```bash