Get Started
BetaAdd Post-Classification Trade Flags to your AI assistant in under a minute. One URL, any client.
Beta. This skill is live, but it has not been certified by Proofwork yet.
Add the server
Any MCP-compatible client can connect using the server URL:
https://mcp.proofworklabs.com/mcp
- Claude: open Customize → Connectors, click Add custom connector, and paste the URL.
- ChatGPT: turn on Developer mode under Settings → Security and login, then go to chatgpt.com/plugins, click the plus button, and paste the URL.
- Other clients: add the URL as a remote MCP server.
Leave OAuth fields empty. Authentication is handled automatically. See the connector docs for client-specific details.
Sign in when prompted
On first use, a browser window opens for sign-in. Use your Google, Microsoft, or email account. This happens once — your session is remembered.
Try it
Try this in your AI assistant:
"I have classified this pump as 8413.70.2004, made in China. What extra duties apply?"
"Does 4412.31.0620 from Vietnam have any antidumping exposure?"
"Which agencies care about an entry of 0304.62.0020?"
Your AI will call the skill tools automatically:
Free tier: 500 MCP tool calls per organization, pooled across every Proofwork skill. No credit card required. See pricing for unlimited access.