---
title: "Generate hash sums"
method: POST
path: "/operations/hashsum"
---

# Generate hash sums

`POST /operations/hashsum`

Produces a hash sum listing for files under the given path using the requested hash algorithm.

## Query parameters

- `fs` string
- `hashType` string
- `download` boolean
- `base64` boolean
- `_group` string
- `_async` boolean

## Headers

- `Prefer` 'respond-async'

## Request body

- OperationsHashsumRequest
  - `fs` string — Remote name or path to hash, such as `drive:` or `/`.
  - `hashType` string — Hash algorithm to use, e.g. `md5`, `sha1`, or another supported name.
  - `download` boolean — Set to true to force reading the data instead of using remote checksums.
  - `base64` boolean — Set to true to emit hash values in base64 rather than hexadecimal.
  - `_group` string — Assign the request to a custom stats group.
  - `_async` boolean — Run the command asynchronously. Returns a job id immediately.

## Response `200`

Hash algorithm used and the ordered hash lines emitted by `operations/hashsum`.

- object
  - `hashType` string, required
  - `hashsum` string[], required

## Other responses

- `202` — Request accepted for async processing. Poll /job/status with the returned jobid.
- `4XX` — Any error response (HTTP 4xx/5xx)
- `5XX` — Any error response (HTTP 4xx/5xx)

## Changes

- **2026-08-19** `638e349833a9` — 1 info
  - added the required property `executeId` to the response with the `202` status
- **2026-07-12** `fdf1b1fc77fe` — 1 breaking
  - removed the required property `executeId` from the response with the `202` status
- **2026-07-12** `842fb2d927ae` — 1 info
  - added the required property `executeId` to the response with the `202` status
- **2026-06-05** `2849bf2803ce` — 2 info
  - added the new optional `header` request parameter `Prefer`
  - added the success response with the status `202`
- **2026-04-11** `86281b9ee38c` — 4 info
  - the `query` request parameter `fs` became optional
  - the `query` request parameter `hashType` became optional
  - the request property `fs` became optional
  - the request property `hashType` became optional

[Full history](https://skmtc.dev/rclone/apis/rclone-rc-api/changes/operations/hashsum/post.md)

---

[API](https://skmtc.dev/rclone/apis/rclone-rc-api.md) · [All operations](https://skmtc.dev/rclone/apis/rclone-rc-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/rclone/rclone-rc-api/revisions/adc0c129da4f/schema)