resend.ApiKey issue - Documentation discrepancy

[rexwithluv]

In the official documentation, resend.api_key is used to set the API key and send emails. However, after testing, I realized that it does not load the API key correctly. Instead, it needs to use resend.ApiKey to properly authenticate and send the email.

def send_email(email: str, text: str, api_key: str) -> None:
    resend.ApiKey = os.getenv(api_key)

    email = resend.Emails.send(
        {
            "from": "onboarding@resend.dev",
            "to": [email],
            "subject": "hey :)",
            "text": text,
        }
    )

[drish]

hey @rexwithluv I believe you have the api key set as an env var ? check your os.environ["RESEND_API_KEY"], the SDK will raise resend.exceptions.ValidationError: API key is invalid when the api key is not properly set.

it seems that in your example code resend.ApiKey = os.getenv(api_key) you're setting the Resend ApiKey type, not the actual api key used to make http requests.

this code below works fine.

import resend

resend.api_key = "re_....."

params: resend.Emails.SendParams = {
    "from": "onboarding@resend.dev",
    "to": ["delivered@resend.dev"],
    "subject": "hi",
    "html": "<strong>hello, world!</strong>",
}


email: resend.Email = resend.Emails.send(params)

lmk if you still runs into any issues 👍

[rexwithluv]

I managed to fix it, but I don't fully understand the exact cause of this. When I call it using os.environ(), it loads correctly, but it doesn't work when I use os.getenv().

Example:

# This works correctly
resend.api_key = os.environ(api_key)

# This returns an exception
resend.api_key = os.getenv(api_key)

[drish]

I managed to fix it, but I don't fully understand the exact cause of this. When I call it using os.environ(), it loads correctly, but it doesn't work when I use os.getenv().

This works correctly
resend.api_key = os.environ(api_key)

This returns an exception
resend.api_key = os.getenv(api_key)

hey @rexwithluv if your RESEND_API_KEY is already set in your environment variables you won't need to call resend.api_key= it should be already loaded by the SDK automatically.

you only need to set the resend.api_key using the setter ie: resend.api_key="something" if you're not using the RESEND_API_KEY env var.

if you share your full code I can help you find the root cause of why it wasn't working before.