[Python] Python requests.post() returns 401 while identical request in Postman succeeds

I'm integrating with a third-party shipping API. When I send a POST request to their /api/login-plugin endpoint using Postman, it works perfectly and returns a 200 OK response.

However, sending the exact same request using Python’s requests module (inside an Odoo backend module) always returns:

{
"status": false,
"code": 401,
"message": "The authorization key is invalid"
}

✅ What works in Postman:


URL:
https://demo.stage.torod.co/en/api/login-plugin

Headers:

Content-Type: application/json
KEY: [masked_key]


Body (JSON):

{
"email": "[user_email]",
"password": "[user_password]",
"plugin": "magento",
"webhook_url": "",
"site_name": "odoo",
"site_url": "http://localhost:8069"
}

❌ What fails in Python:


import requests

headers = {
"KEY": "[masked_key]",
"Content-Type": "application/json"
}

payload = {
"email": "[user_email]",
"password": "[user_password]",
"plugin": "magento",
"webhook_url": "",
"site_name": "odoo",
"site_url": "http://localhost:8069"
}

response = requests.post("https://demo.stage.torod.co/en/api/login-plugin", headers=headers, json=payload)

print(response.status_code)
print(response.text)

What I’ve tried:

• Headers and payload match Postman exactly.
• Tried both json= and data= in the request.
• Added User-Agent: PostmanRuntime/... to headers.
• Curl works from the same machine too.
• No proxy, VPN, or IP restrictions.

Still, only Python (inside Odoo) fails with 401.

Any idea what might be causing this mismatch?

Thanks!

I tried sending the exact same request from Python (inside Odoo) that works in Postman. I expected a 200 OK response like in Postman, but I consistently get a 401 Unauthorized error. I verified the headers, payload, and even tried mimicking the User-Agent.

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