---
title: flowGenerateSignature - GraphQL Admin
description: Generates a signature for a Flow action payload.
api_version: 2026-04
source_url:
  html: https://shopify.dev/docs/api/admin-graphql/latest/mutations/flowGenerateSignature
  md: https://shopify.dev/docs/api/admin-graphql/latest/mutations/flowGenerateSignature.md
---

# flow​Generate​Signature

mutation

Generates a signature for a Flow action payload.

## Arguments

* id

  [ID!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/ID)

  required

  The unique identifier of the Flow action definition.

* payload

  [String!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  required

  The request payload used to generate the signature.

***

## Flow​Generate​Signature​Payload returns

* payload

  [String](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  The payload used to generate the signature.

* signature

  [String](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  The generated signature.

* user​Errors

  [\[User​Error!\]!](https://shopify.dev/docs/api/admin-graphql/latest/objects/UserError)

  non-null

  The list of errors that occurred from executing the mutation.

***

## Examples

* ### flowGenerateSignature reference