Nonprofit Check Plus API by Pactman

Pros: Straightforward to integrate
Free tier
Developer‑friendly
Greatly reduces manual due diligence
Responsive support and clear documentation

Cons: Basic free tier is rate-limited
Some developers would prefer more prebuilt code examples for popular languages to simplify setup

Overall: The Nonprofit Check Plus API delivers reliable, real-time nonprofit status verification with a clear emphasis on compliance and developer usability. While basic users should be aware of rate limits, the generous free tier and smooth upgrade path make it practical for both small and larger operations.

Pros: The API is easy to implement. The single bearer token and natural english JSON responses, I was up and running in minutes.

I love free. The free version is generous enough for testing and light usage, anyone can get on board.

It pulls authoritative data from IRS Pub 78, BMF, AROE, and OFAC lists for nonprofit verification.

If needed there is a bulk endpoint that allows organizations to verify dozens or hundreds of Employer Identification Numbers (EINs) at once.

The swagger-based docs with live testing make it easy to implement, test and troubleshoot.

Cons: Not too many really and most cons are just a matter or what you need vs what you want.

The free tier, while great for testing, may be restrictive for production use without upgrading.

Currently non-profit search is limited to U.S. nonprofits, which may not suit international platforms or global CSR programs such as the one I'm familiar with at Sasol, South Africa.

It’s strictly an API so companies would need to build their own interface or integrate it into existing systems.

Overall: NonprofitCheck Plus does deliver exactly what it promises: fast, and scalable nonprofit verification. I believe it will work for any organization that needs to verify NPO's. The free tier is such a nice option, and the upgrade path is seamless once a company needs to scale.

Pros: The API is straightforward to integrate and well-documented. It’s a great tool for automating nonprofit verification and due diligence using trusted datasets. Ideal for donation, grant, and compliance platforms.

Cons: No major issues, but a live demo or test environment would help evaluate the API faster before integration.

Overall: A very useful API to automate nonprofit verification. The integration is straightforward, the documentation is clear, and the value it brings in terms of compliance and fraud prevention is obvious. Ideal for platforms dealing with donations, grants, or partnerships. Solid approach and well thought out.

Pros: We recently integrated the Check Plus API into our onboarding process for nonprofit verification, and it has been a game changer. The documentation was straightforward, allowing us to implement it into our existing system in under a day. The accuracy of the EIN validation and status checks has significantly enhanced our trust metrics. The real-time responses from the API have drastically reduced our manual review time, and the dashboard provides excellent visibility into check history and logs.

Cons: It would be great to have more customizable fields or tagging options for bulk verification tasks. Additionally, the API rate limits can feel restrictive during peak periods unless you opt for a higher tier.

Overall: This is a robust and reliable API that has greatly improved our nonprofit onboarding workflow. The combination of automation and responsive support makes it one of the smoothest integrations we've experienced. I highly recommend it for any platform focused on tax-exempt entity compliance.

Pros: Pros: We integrated the Check Plus API to streamline nonprofit verification during our onboarding process. The documentation was clear, and implementation into our existing backend took less than a day. The accuracy of the EIN validation and status checks really boosted our trust metrics.
The real-time responses from the API helped us reduce manual review time drastically. Plus, the dashboard gives great visibility into check history and logs.

Cons: Would love to see more customizable fields or tagging options for bulk verification jobs. Also, the API rate limits can feel tight during peak volume periods unless you're on a higher tier.

Overall: A solid, dependable API that has significantly improved our nonprofit onboarding workflow. The blend of automation and responsive support makes it one of the smoother integrations we've done. Highly recommended for platforms dealing with tax-exempt entity compliance.

Pros: The NonprofitCheck Plus API from Pactman is an excellent solution for verifying nonprofit compliance, offering granular IRS BMF, PUB78, automatic revocation, and OFAC data in one platform. With a generous free tier (200 checks/month), clear authentication via Bearer tokens, and straightforward REST endpoints for single or bulk EIN lookups, it’s accessible for both small and large organizations. The API stands out among competitors like Guidestar’s Charity Check by including at least 40 detailed nonprofit fields, no credit card required to start, and transparent pricing with annual discounts. While more ready-to-use code examples and expanded support options would be helpful, the comprehensive documentation and competitive features make it a reliable, developer-friendly choice for anyone needing fast, compliant nonprofit verification.

Cons: The platform could benefit from more prebuilt code examples in popular languages to speed up integration for less experienced developers.

Overall: Reliable, affordable API with rich nonprofit data; could use more code samples for easier setup.

Pros: Compliance in non profit fund raising made easier.
Free trial without credit card to get things started.

Cons: I would prefer instant access to the free trial version.

Overall: Clear documentation and easy integration.
It' good that they offer this free trial version to try things out.

Pros: We started using the Check Plus API to verify EINs and compliance for nonprofits on our platform. Honestly, it’s made operations much easier.

The setup was super quick, the data is reliable, and support actually responds when you reach out (rare these days).

The customer support team was responsive when we had questions about batch checks.

Cons: Like any API-based service, there’s a bit of a learning curve during setup, and costs can grow as your usage grows. That said, once it’s in place, it runs smoothly and saves a ton of time.

Overall: It has been a reliable, time-saving tool for our team. It simplifies nonprofit verification efficiently. The value it brings far outweighs the cost. We’d definitely recommend it.