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Update Environment Variable

Use this API to update an existing Hook Environment Variable and define its value.

When an Environment Variable is updated, all of the functions that are using that variable will also be updated to get the new value.

For more detail on how to use environment variables within a hook function see the Smart Hooks Overview.

Resource URL


Header Parameters




Set to bearer <access_token>.

Set <access_token> to the access token you generated using the Generate Token API.

The access token must have been generated using an API credential pair created using the scope required to call this API. This API can be called using any one of the following scopes: Manage All.

In order to use Smart Hooks your API Credentials must be created after 21st October 2020.




Set to application/json.

Resource Parameter




Set to the id of the Hook Environment Variable that you want to update.

Request Parameters




The secret value that will be encrypted at rest and injected in applicable hook functions at run time.

Sample Responses

    "id": "80f65e4b-4325-4ee6-86af-9e6b8793f125",
    "name": "SAMPLE_VAR",
    "created_at": "2020-10-22T22:07:48.236Z",
    "updated_at": "2020-10-22T22:09:12.307Z"
    "name": "BadRequestError",
    "message": "Invalid env record ID"

Typically, this error means that your Authorization header value is missing or incorrectly formatted. The Authorization header value should use this format: bearer:<access_token>.

    "name": "UnauthorizedError",
    "message": "The request requires user authentication."

The name of a var can not be changed

    "name": "UnprocessableEntityError",
    "message": "instance additionalProperty \"name\" exists in instance when not allowed"

Postman Collection

Run In Postman

    Clicking Run in Postman button navigates to the page where you can fork the collection to your workspace. Forking the collection into your workspace will enable you to contribute to the source collection using pull requests. You can also view the collection in a public workspace if you like and even import a copy of the collection using the links present on the screen.

Sample Code


Replace sample values indicated by < > with your actual values.

Update Hook Environment Variable

curl 'https://<subdomain>/api/2/hooks/envs/:id' \
-X PUT \
-H "Authorization: bearer <access_token>" \
-H "Content-Type: application/json" \
-d '{
    "value": "helloworld"

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