eth_feeHistory — Robinhood Chain JSON-RPC

Status: Available

Return fee-market history.

POSThttps://triport.io/rpc/robinhood

Network: Robinhood Chain mainnet (chain ID 4663)
Scope: robinhood:rpc
Auth: x-token: $TRIPORT_API_KEY
Rate limit: robinhood_read_rpc - 15 / 20 / 100 / 250 RPS sustained · short burst 30 / 40 / 200 / 500 (free / basic / pro / business) (plan policy); enterprise unlimited; Burst capacity

Endpoint and plans: Robinhood Chain RPC endpoint.

Request

cURLJavaScriptPython

curl https://triport.io/rpc/robinhood \
  -H "x-token: $TRIPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_feeHistory","params":["0x1","latest",[]]}'

const res = await fetch("https://triport.io/rpc/robinhood", {
  method: "POST",
  headers: {
    "x-token": process.env.TRIPORT_API_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_feeHistory",
    "params": [
      "0x1",
      "latest",
      []
    ]
  }),
});
const data = await res.json();
console.log(data);

import os


import requests


resp = requests.post(
    "https://triport.io/rpc/robinhood",
    headers={
        "x-token": os.environ["TRIPORT_API_KEY"],
        "Content-Type": "application/json",
    },
    json={
        "jsonrpc": "2.0",
        "id": 1,
        "method": "eth_feeHistory",
        "params": [
            "0x1",
            "latest",
            [],
        ],
    },
)
data = resp.json()
print(data)

Response

JSON

Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "oldestBlock": "0x36273ec",
    "reward": [
      [
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0"
      ]
    ],
    "baseFeePerGas": [
      "0x128d3cb0",
      "0x1290fda0",
      "0x12983160",
      "0x12b17620",
      "0x12b17620"
    ],
    "gasUsedRatio": [
      1,
      1,
      1,
      1
    ]
  }
}

eth_feeHistory — return fee-market history. The published signature and response shape come from the measured Robinhood OpenRPC contract (chain ID 4663).

Base fee and priority-fee percentiles over a window of blocks — the input for a fee strategy rather than a single price. Useful for budgeting; it does not predict ordering, which here is arrival order rather than an auction.

Parameters

JSON-RPC params is a positional array.

blockCountQuantityrequired

How many blocks of fee history to return, in hex.

newestBlockBlockTagrequired

Newest block of the requested fee-history window.

rewardPercentilesarrayrequired

Ascending percentiles (0–100) for the priority-fee reward buckets.

Response

A measured response from Robinhood Chain mainnet.

Errors

See Robinhood errors. Invalid parameters return a JSON-RPC parameter error; authentication and rate-limit failures use the shared client error contract. Unknown failures are returned without an implicit retry.

Examples

JavaScript

const response = await fetch("https://triport.io/rpc/robinhood", {
  method: "POST",
  headers: { "x-token": process.env.TRIPORT_API_KEY, "Content-Type": "application/json" },
  body: JSON.stringify({"jsonrpc":"2.0","id":1,"method":"eth_feeHistory","params":["0x1","latest",[]]}),
});
const payload = await response.json();

Notes

Percentiles over a window are a budgeting input, not an ordering prediction.
Ordering here is arrival order, so a fee strategy cannot buy inclusion priority.

eth_blockNumber · eth_call · eth_chainId

Limits · Errors

Parameters

Response

Errors

Examples

Notes

Related