Facebook Ads MCP Server is a Model Context Protocol (MCP) server that enables Claude and other MCP clients to access Facebook advertising data, insights, and account information through natural language conversations. It supports OAuth-based authentication, token management, and session handling, with production security ensuring hardcoded tokens are only allowed in test mode. The server exposes tools for listing ad accounts, retrieving account details and performance insights, and fetching ad activities, all with automatic pagination for large datasets. Configuration is performed via Claude Desktop MCP settings and environment variables (e.g., FACEBOOK_ACCESS_TOKEN). The project architecture includes modular components under src/tools for common operations like listing accounts, fetching pagination data, and obtaining insights, together with utilities for Facebook API access and error handling. Typical workflows involve obtaining a Facebook access token with permissions such as ads_read, ads_management, and business_management, then configuring the MCP client to use commands like facebook_list_ad_accounts, facebook_get_adaccount_insights, and related tools.