Pactman's Nonprofit Check Plus API is highly praised for its ease of use and seamless integration, making it a valuable tool for developers and platforms focused on nonprofit verification. Users appreciate its direct connection to IRS and OFAC data, which enhances transparency and trust in the social sector. The API's straightforward approach to compliance data is noted as a significant advantage, simplifying due diligence and fraud prevention. The generous free tier and clean documentation further contribute to its appeal, making it a critical partner for efficient charitable operations.