diff --git a/apps/portal/src/app/nebula/api-reference/page.mdx b/apps/portal/src/app/nebula/api-reference/page.mdx
index 6db07703876..27835c3fc08 100644
--- a/apps/portal/src/app/nebula/api-reference/page.mdx
+++ b/apps/portal/src/app/nebula/api-reference/page.mdx
@@ -151,7 +151,7 @@ data: {
   "request_id": "9efc7f6a-8576-4d9c-8603-f6c72aa72164",
   "type": "sign_transaction",
   "source": "executor",
-  "data": "{\"maxPriorityFeePerGas\": 13620452, \"maxFeePerGas\": 53197870998, \"chainId\": 11155111, \"from\": \"0xc3F2b2a12Eba0f5989cD75B2964E31D56603a2cE\", \"to\": \"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\", \"data\": \"0x\", \"value\": 100000000000000, \"gas\": 0}"
+  "data": "{\"chainId\": 11155111, \"to\": \"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\", \"data\": \"0x\", \"value\": \"0x5af3107a4000\"}"
 }
 
 event: delta
@@ -311,14 +311,10 @@ Chat actions represent blockchain transactions or operations that Nebula has pre
 - `type`: The type of action (e.g., "sign_transaction")
 - `source`: Origin of the action (e.g., "executor")
 - `data`: Transaction parameters including:
-  - `maxPriorityFeePerGas`: Maximum priority fee per gas unit
-  - `maxFeePerGas`: Maximum total fee per gas unit
   - `chainId`: Network identifier (e.g., 11155111 for Sepolia)
-  - `from`: Sender's address
   - `to`: Recipient's address
   - `data`: Transaction data (if any)
   - `value`: Amount to send in wei
-  - `gas`: Gas limit (0 for automatic estimation)
 
 When handling actions:
 1. Parse the `message` field for human-readable transaction details
@@ -362,8 +358,6 @@ async function handleNebulaResponse(response) {
         to: txData.to,
         data: txData.data,
         value: BigInt(txData.value),
-        maxFeePerGas: BigInt(txData.maxFeePerGas),
-        maxPriorityFeePerGas: BigInt(txData.maxPriorityFeePerGas),
         chain: txData.chainId,
         client
       });