US Extract Getting Started: API Credentials and First Request

Getting started overview

Integrating with US Extract's validation APIs involves a sequence of steps designed to get developers making authenticated requests efficiently. The process begins with account creation, followed by the generation and secure handling of API keys. These keys are essential for authenticating all requests to US Extract's services, which include Address, Email, Phone, and Name Validation APIs. The APIs are RESTful, typically accepting and returning data in JSON format, which aligns with common web service interaction patterns.

Developers are provided with documentation and code examples in multiple languages to facilitate a quick start. The primary focus of the initial integration is to successfully send an address validation request and interpret its JSON response, confirming that the API key is correctly configured and the API endpoint is reachable. Subsequent steps often involve integrating the validation logic into applications, handling various response scenarios, and securely managing API credentials within a production environment.

Before proceeding, ensure you have access to an environment where you can write and execute code, and a tool for making HTTP requests (e.g., curl, Postman, or an HTTP client library in your chosen programming language). Familiarity with JSON data structures is also beneficial for parsing API responses.

Create an account and get keys

To begin using US Extract, you must first create an account on their platform. This account provides access to the developer dashboard, where API keys are generated and managed. US Extract offers a free tier that includes 500 lookups per month, suitable for initial testing and development before committing to a paid plan.

Account Creation Steps:

1. Visit the US Extract website: Navigate to the US Extract homepage.
2. Sign up: Look for a 'Sign Up' or 'Get Started Free' button, typically located in the navigation bar or prominent on the homepage.
3. Complete registration: Provide the required information, which usually includes your email address, a password, and potentially some basic company details.
4. Verify email: A verification link will be sent to your registered email address. Click this link to activate your account.

Obtaining API Keys:

Once your account is active and you've logged into the US Extract dashboard, you can access and generate your API keys.

1. Access Dashboard: Log in to your US Extract developer dashboard.
2. Navigate to API Keys section: Typically, there's a section labeled 'API Keys', 'Credentials', or 'Settings' in the dashboard menu.
3. Generate Key: Follow the instructions to generate a new API key. Some platforms offer different types of keys (e.g., public/private, test/live). For initial testing, a single API key is usually sufficient.
4. Copy Key: Securely copy your generated API key. This key will be used to authenticate your requests to the US Extract API. Treat your API key like a password; do not expose it in client-side code or public repositories.

Your first request

With your API key in hand, you can make your first API call. This example demonstrates a basic address validation request using the Address Validation API, one of US Extract's core products. We'll use curl for simplicity, but the same principles apply when using an HTTP client library in your preferred programming language.

API Endpoint and Parameters

The Address Validation API typically has an endpoint like https://api.usextract.com/v1/address/validate. It requires your API key and address components as query parameters or in the request body, depending on the specific API version and method. For this example, we'll use query parameters.

Example Address Data:

• Street: 1600 Amphitheatre Pkwy
• City: Mountain View
• State: CA
• Zip Code: 94043
• Country: US

Using curl for Address Validation

Replace YOUR_API_KEY with the actual API key you obtained from your US Extract dashboard.

curl -X GET \
  "https://api.usextract.com/v1/address/validate?street=1600%20Amphitheatre%20Pkwy&city=Mountain%20View&state=CA&zip_code=94043&country=US&api_key=YOUR_API_KEY" \
  -H "Accept: application/json"

Interpreting the Response

A successful response will typically return a JSON object containing the validation status and standardized address information. The structure might vary slightly, but generally includes fields indicating validity, suggested corrections, and parsed components. Here's an example of what a successful response might look like:

{
  "status": "valid",
  "address": {
    "street": "1600 Amphitheatre Pkwy",
    "city": "Mountain View",
    "state": "CA",
    "zip_code": "94043-1351",
    "country": "US",
    "latitude": 37.4224764,
    "longitude": -122.0842499
  },
  "delivery_point_validation": {
    "dpv_status": "Y",
    "dpv_footnotes": "AABB"
  },
  "validation_messages": []
}

The "status": "valid" field confirms that the address was successfully validated. Other fields provide standardized components (e.g., the extended zip code 94043-1351) and additional validation details. For a complete understanding of response fields, consult the US Extract API reference documentation.

Python Example

For Python developers, using the requests library is a common approach:

import requests
import json

api_key = "YOUR_API_KEY"
base_url = "https://api.usextract.com/v1/address/validate"

params = {
    "street": "1600 Amphitheatre Pkwy",
    "city": "Mountain View",
    "state": "CA",
    "zip_code": "94043",
    "country": "US",
    "api_key": api_key
}

try:
    response = requests.get(base_url, params=params)
    response.raise_for_status()  # Raise an exception for HTTP errors
    data = response.json()
    print(json.dumps(data, indent=2))

    if data.get("status") == "valid":
        print("Address is valid.")
    else:
        print("Address validation failed or provided corrections.")
        print("Messages:", data.get("validation_messages"))

except requests.exceptions.RequestException as e:
    print(f"An error occurred: {e}")
except json.JSONDecodeError:
    print("Failed to decode JSON response.")

Node.js Example

For Node.js developers, using node-fetch (or axios) is a common pattern:

const fetch = require('node-fetch'); // or import fetch from 'node-fetch'; for ES modules

const apiKey = "YOUR_API_KEY";
const baseUrl = "https://api.usextract.com/v1/address/validate";

const params = new URLSearchParams({
    street: "1600 Amphitheatre Pkwy",
    city: "Mountain View",
    state: "CA",
    zip_code: "94043",
    country: "US",
    api_key: apiKey
});

async function validateAddress() {
    try {
        const response = await fetch(`${baseUrl}?${params.toString()}`);
        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }
        const data = await response.json();
        console.log(JSON.stringify(data, null, 2));

        if (data.status === "valid") {
            console.log("Address is valid.");
        } else {
            console.log("Address validation failed or provided corrections.");
            console.log("Messages:", data.validation_messages);
        }

    } catch (error) {
        console.error(`An error occurred: ${error}`);
    }
}

validateAddress();

Common next steps

After successfully making your first API call, consider these next steps to further integrate US Extract into your applications:

1. Explore other APIs: US Extract offers Email, Phone, and Name Validation APIs. Investigate these to see how they can enhance your data quality initiatives.
2. Implement SDKs: For more streamlined integration, use one of the officially supported SDKs for Python, Node.js, PHP, Ruby, Java, or .NET. SDKs handle authentication, request formatting, and response parsing, reducing boilerplate code.
3. Error Handling: Implement robust error handling in your application to gracefully manage API errors, rate limits, and network issues. Consult the API reference documentation for specific error codes and their meanings.
4. Secure API Keys: Never hardcode API keys directly into your source code, especially for production environments. Use environment variables (e.g., Google Cloud API Key environment variables), secrets management services, or configuration files to store and retrieve keys securely.
5. Monitor Usage: Regularly check your API usage within the US Extract dashboard to stay within your plan limits and understand your consumption patterns.
6. Transition to Production: Once development and testing are complete, switch to your production API key (if applicable) and ensure your application adheres to US Extract's terms of service and best practices for high-volume usage.
7. Review Pricing: Understand the US Extract pricing structure to choose a plan that aligns with your anticipated usage and budget.

Troubleshooting the first call

Encountering issues during your first API call is common. Here's a table outlining frequent problems and their solutions:

Always refer to the US Extract documentation for the most accurate and up-to-date troubleshooting information and specific error codes.