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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

Contact SupportView Documentation
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