Pledge Software has launched the Nonprofit Check Plus API, a new tool that allows developers, fintech companies, grant platforms, marketplaces, and charitable foundations to instantly verify nearly 2 million nonprofit organizations in the US using real-time data from federal sources. The API aggregates data from the IRS Business Master File, IRS Pub 78, OFAC, and the IRS Auto-Revocation List, ensuring seamless and accurate nonprofit validation by Employer Identification Number (EIN). Key Features: Real-Time EIN-Based Lookup: Validate nonprofits instantly using a single API call. Multi-Source Compliance Checks: Cross-reference against IRS BMF, Pub 78, AROE, and OFAC lists. Structured JSON Output: Developer-friendly format for easy integration. Free & Paid Tiers: Flexible pricing for small developers, large enterprises, and everything in between.