---
title: "Mempool feerates (deprecated)"
method: GET
path: "/timeseries/mempool-feerates"
tags: ["Timeseries"]
---

# Mempool feerates (deprecated)

`GET /timeseries/mempool-feerates`

Returns mempool feerates for the specified assets.<br/> This endpoint is useful for those who want to explore the history of the feerate distribution and potentially select the time period with the lowest commissions.<br/> Results are ordered by `(asset, time)`.<br/> To fetch the next page of results use the `next_page_url` JSON response field.

## Query parameters

- `assets` string[], required
- `start_time` string
- `end_time` string
- `start_inclusive` boolean
- `end_inclusive` boolean
- `timezone` string
- `page_size` integer
- `paging_from` 'start' | 'end', PagingFrom
- `pretty` boolean
- `format` 'json' | 'csv'
- `next_page_token` string

## Response `200`

Mempool feerates.

- MempoolFeeratesResponse — Mempool feerates response.
  - `data` MempoolFeerate[], required
    - `asset` string, required — Name of the asset.
    - `time` string, required — The time in ISO 8601 date-time format. Always with nanoseconds precision.
    - `feerates` MempoolFeerateBand[], required
      - `feerate` string, required — Rounded feerate value used to aggregate the transactions into the current mempool feerate band. Unit is sat/vB.
      - `count` string, required — Amount of transactions included into the current mempool feerate band.
      - `consensus_size` string, required — Consensus sizes summed up for all the transactions included into the current mempool feerate band. vSizes sum can be derived as 'vSize = consensusSize / 4'.
      - `physical_size` string — Physical sizes summed up for all the transactions included into the current mempool feerate band.
      - `fees` string, required — Fees summed up for all the transactions included into the current mempool feerate band. Unit is BTC.
  - `next_page_token` string — Token of the next page results for a given request.
  - `next_page_url` string — URL of the next page results for a given request.

## Other responses

- `400` — Asset not found.
- `401` — Requested resource requires authorization.
- `403` — Requested resource is not available with supplied credentials.
- `414` — Provided URI is too long. It must not be greater than 10000 symbols.

---

[API](https://skmtc.net/coinmetrics/apis/coin-metrics-api-v4.md) · [All operations](https://skmtc.net/coinmetrics/apis/coin-metrics-api-v4/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/coinmetrics/coin-metrics-api-v4/versions/774268c0a4fe/schema)