RPC-468 updating readme

README.md

@@ -116,3 +116,73 @@ cargo run
   "id": "1"
 }
 ```
+
+**Request the recommended priority fee details**
+The purpose of this API is to understand what data is taken into consideration given the query.
+The response shows the statistical distribution of data per account as well as how much data is available in each account.
+The request is identical to the one used in getPriorityFeeEstimate request. This is to ensure that same request could be
+reused during analysis and during dev / operational stages
+
+```json
+{
+  "id": "version1",
+  "jsonrpc": "2.0",
+  "method": "getPriorityFeeEstimateDetails",
+  "params": [
+    {
+      "accountKeys": [
+"JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"
+      ],
+      "options": {"recommended": true}
+    }
+  ]
+}
+```
+
+**Response**
+
+```json
+{
+  "jsonrpc": "2.0",
+  "result": {
+    "priorityFeeEstimateDetails": [
+      [
+        "JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4",
+        {
+          "estimates": {
+            "min": 0.0,
+            "low": 0.0,
+            "medium": 0.0,
+            "high": 0.0,
+            "veryHigh": 0.0,
+            "unsafeMax": 25113388.0
+          },
+          "mean": 717525.0, // mean fee payed for each transaction for account evaluated over last 150 (or less if requested less) slots 
+          "stdev": 4244937.0, // standard deviation of fee payed for each transaction for account evaluated over last 150 (or less if requested less) slots ,
+          "skew": null, // skew of fee payed for each transaction for account evaluated over last 150 (or less if requested less) slots. Null if data is randomly distributed and cannot calculate
+          "count": 35  // Number of transactions for account that were evaluated over last 150 (or less if requested less) slots
+        }
+      ],
+      [
+        "Global",
+        {
+          "estimates": {
+            "min": 0.0,
+            "low": 0.0,
+            "medium": 20003.0,
+            "high": 2276532.0,
+            "veryHigh": 32352142.0,
+            "unsafeMax": 2000000000.0
+          },
+          "mean": 8118956.0, // mean fee payed for each transaction for all accounts evaluated over last 150 (or less if requested less) slots
+          "stdev": 53346050.0, // standard deviation of fee payed for each transaction for all account evaluated over last 150 (or less if requested less) slots ,
+          "skew": null, // skew of fee payed for each transaction for all accounts evaluated over last 150 (or less if requested less) slots. Null if data is randomly distributed and cannot calculate
+          "count": 14877  // Number of transactions for all accounts that were evaluated over last 150 (or less if requested less) slots
+        }
+      ]
+    ],
+    "priorityFeeEstimate": 20003.0
+  },
+  "id": "version1"
+}
+```