> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://developer.americanexpress.ferndocs.com/fraud-prevention/v2/amex-token-service/guide/using-tokens/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developer.americanexpress.ferndocs.com/_mcp/server. # Using Tokens To use tokens in transaction authorization requests, settlements, and disputes; provide the relevant token details instead of the PAN details based on the guidelines listed below: **Before Tokenization** **After Tokenization** PAN (15-digit) CoFT Token (15-digit) PAN Expiry (MM/YY) Token Expiry (MM/YY) CID (four-digit code) DCSC (four-digit code) Please note that all Partners are required to comply with the American Express Global Credit Authorization Guidelines (GCAG/GFSG) for authorizations, submissions, and disputes. For more information about GCAG, please contact your American Express relationship manager or visit our [Merchants Portal](http://www.americanexpress.com/merchantspecs).