Python integration

Block disposable emails in Python

You're running a Python app and fake signups keep getting through. Add one request to your signup code and Fidro checks the email and IP before the account exists.

How it works

Send the user's email and IP to Fidro with requests. Fidro checks the address, the network and what it has already seen from them, then answers allow, challenge or block in a single JSON response. No SDK needed.

One fake signup can look perfectly normal. Five from the same IP in an hour don't. Send event and user_id with each call and Fidro remembers, so it catches the pattern as well as the person. You get a score from 0 to 100 and one answer: allow, challenge or block.

1. Install what you need

pip install requests

You'll also need an API key. Sign up free and you'll have one in a minute, no card needed.

2. Check every signup

Send the email and IP to POST /api/validate. Fidro checks for disposable domains, missing mail servers, VPNs, proxies and Tor, and answers allow, challenge or block. Let the allows straight in, ask the challenges to confirm their email, and turn the blocks away.

import os
import requests

FIDRO_API_KEY = os.environ["FIDRO_API_KEY"]

def check_signup(email: str, ip: str) -> dict:
    response = requests.post(
        "https://fidro.io/api/validate",
        headers={"Authorization": f"Bearer {FIDRO_API_KEY}"},
        json={"email": email, "ip": ip, "event": "signup"},
        timeout=5,
    )
    response.raise_for_status()
    return response.json()

# Usage
result = check_signup("test@example.com", "8.8.8.8")
print("Risk score:", result["risk_score"])          # 0 to 100
print("Recommendation:", result["recommendation"])  # allow, challenge or block

if result["recommendation"] == "block":
    pass  # Refuse the signup

3. Look up an IP

Just want to know where a request came from? GET /api/ip/{ip} returns the country, city, ISP and network, without scoring. The VPN, proxy and Tor flags come from /api/validate, under data.checks.

import os
import requests

FIDRO_API_KEY = os.environ["FIDRO_API_KEY"]

def lookup_ip(ip: str) -> dict:
    response = requests.get(
        f"https://fidro.io/api/ip/{ip}",
        headers={"Authorization": f"Bearer {FIDRO_API_KEY}"},
        timeout=5,
    )
    response.raise_for_status()
    return response.json()

# Usage
result = lookup_ip("8.8.8.8")
print("Country:", result["location"]["country_name"])
print("ISP:", result["location"]["isp"])

Want to see real results first? Try any address in the free IP checker.

Next steps

The API reference has every field. The free checker shows you real results. And if you're weighing up alternatives, the comparisons are honest about where others fit.

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Frequently Asked Questions

How do I add fraud detection to Python?

Send a POST request to https://fidro.io/api/validate with the user's email and IP. Fidro returns a risk score from 0 to 100 and one recommendation: allow, challenge or block. With requests it takes a few minutes.

Does Fidro have a Python SDK?

You don't need one. Fidro is a plain REST API, so requests, httpx or urllib is all it takes: send JSON, read JSON.

Is Fidro free to use with Python?

Yes. The free plan covers 200 validations a month with no credit card, and it works with any Python app, whether you use Django, Flask, FastAPI or a plain script.

What should I do when Fidro says challenge?

Ask for something a real person will happily do and a script won't: confirm the email address, solve a CAPTCHA, or wait for a quick manual review. Save outright blocks for the clear cases.

Start catching bad signups in the next 5 minutes

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