---
title: "Get recommended base fee for a chain"
method: GET
path: "/v3/blockchain/fee/{chain}"
tags: ["Fee Estimation API"]
---

# Get recommended base fee for a chain

`GET /v3/blockchain/fee/{chain}`

**1 credit per API call**

Get the recommended fee/gas price for a blockchain.

Fee is in satoshis(meaning currency(BTC, DOGE,... / 100 000 000) per byte

This API is supported for the following blockchains:

*   Bitcoin
*   Dogecoin
*   Ethereum
*   Litecoin

## Path parameters

- `chain` 'ETH' | 'BTC' | 'LTC' | 'DOGE', required

## Response `200`

OK

- BlockchainFee — Recommended fees to perform blockchain transaction
  - `fast` number, required — Fast transaction acceptance time into block. For btc-based chains - fee per byte. For evm-based chains - gas price in wei
  - `medium` number, required — Medium transaction acceptance time into block. For btc-based chains - fee per byte. For evm-based chains - gas price in wei
  - `slow` number, required — Slow transaction acceptance time into block. For btc-based chains - fee per byte. For evm-based chains - gas price in wei
  - `baseFee` number — (evm-based only) This is the minimum fee needs to paid in order for the tx to be accepted into block.
  - `time` string, required — Last time fees were recalculated
  - `block` number, required — Last used to calculate fee from

## Other responses

- `400` — Bad Request
- `401` — Unauthorized. Not valid or inactive subscription key present in the HTTP Header.
- `403` — Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.
- `500` — Internal server error. There was an error on the server during the processing of the request.

---

[API](https://skmtc.net/tatum/apis/blockchain-data.md) · [All operations](https://skmtc.net/tatum/apis/blockchain-data/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/tatum/blockchain-data/versions/8622ee4b8fae/schema)