NGC Integration

Connect your Flow Auctions platform with NGC (Numismatic Guaranty Corporation) for seamless grading data synchronization and certificate verification.

Features

Real-time Certificate Verification

Automatically verify NGC certification numbers and display grade information directly in your auction listings.

Automated Grade Importing

Import grades and certification details in bulk for your entire inventory.

Population Report Access

Access NGC population data to provide valuable context for your bidders.

Price Guide Integration

Display current NGC price guide values alongside your auction lots.

Setup Guide

1. Obtain API Credentials

Log in to your NGC dealer account
Navigate to API settings
Generate new API key and secret
Copy credentials to a secure location

2. Configure Flow Integration

Go to your Flow dashboard settings
Select Integrations > NGC
Enter your API credentials
Test the connection

3. Enable Features

Choose which NGC features to enable
Configure automatic grade importing
Set up population report display preferences
Enable price guide integration if desired

4. Test the Integration

Create a test auction lot
Enter a valid NGC certification number
Verify data is being pulled correctly
Check population and price guide display

Requirements

Active NGC dealer account
API access enabled on your NGC account
Flow Auctions Professional plan or higher
Secure HTTPS endpoint for webhook notifications

Pricing

Basic

Included

Certificate verification
Basic grade importing
Standard API access

Premium

$49/month

Everything in Basic
Population report access
Price guide integration
Bulk import API
Webhook notifications
Priority support

Documentation

View API Documentation

Ready to Get Started?

Our team is here to help you set up and configure your integration

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