---
title: hydrogen codegen
description: >-
  Automatically generates GraphQL types for your project’s Storefront API
  queries.
api_name: shopify-cli
source_url:
  html: 'https://shopify.dev/docs/api/shopify-cli/hydrogen/hydrogen-codegen'
  md: 'https://shopify.dev/docs/api/shopify-cli/hydrogen/hydrogen-codegen.md'
---

# hydrogen codegen

Automatically generates GraphQL types for your project’s Storefront API queries.

## Flags

The following flags are available for the `hydrogen codegen` command:

* \--codegen-config-path \<value>

  string

  Specify a path to a codegen configuration file. Defaults to `<root>/codegen.ts` if it exists.

* \--path \<value>

  string

  env: SHOPIFY\_HYDROGEN\_FLAG\_PATH

  The path to the directory of the Hydrogen storefront. Defaults to the current directory where the command is run.

* \--watch

  Watch the project for changes to update types on file save.

### Examples

* #### hydrogen codegen

  ##### hydrogen codegen

  ```bash
  shopify hydrogen codegen [flags]
  ```