Nonprofit Check Plus API by Pactman

Pros: - Generous free/starting tier
- Solid API and Documentation
- Flexible with lots of props
- Performant (had no lag in my tests)

Cons: - It covers only US data for now.
- Documentation is basic (which is a PRO to me actually)

Overall: I tried the API for a small project to verify a few charities and it was straightforward setup. Documentation was easy to scan and feed in your AI tool and the response is clean JSON. OOTB you get a generous free tier and lots of fields in the response so I believe this will cover any future needs (e.g IRS status and much more).

Pros: Integration was very straightforward — a simple HTTP request in, clean JSON response out. I was able to plug it directly into our backend validation flow without major changes. The response format is predictable and easy to parse, which makes automation simple. It saves us from manually checking nonprofit status and reduces friction during onboarding. The free tier is also helpful for testing before committing.

Cons: The documentation focuses mainly on common use cases, so you’ll need to handle some edge cases yourself. There’s no visual dashboard or UI — it’s clearly built as a pure API product for developers. If you’re looking for a full compliance management platform, this isn’t that — it’s a focused verification tool.

Overall: It does exactly what it promises: fast, programmatic nonprofit status checks. For developer teams that want to automate verification inside their product, it’s a solid and dependable solution. Just be prepared to manage the integration logic on your side.

Pros: As a software developer, I integrated the Nonprofit Check Plus API into my donation platform in under a day. Excellent documentation, clean JSON with 40+ granular fields, real-time EIN lookups from IRS BMF, PUB78, AROE & OFAC, and a generous free tier (200 checks/month) made it perfect to start with zero cost.

Cons: Only covers U.S. nonprofits (no international data yet) and the free tier limit of 200 checks/month feels a bit tight when doing batch testing.

Overall: I’ve been using the Nonprofit Check Plus API for the last 4 months in a real production project that connects global donors with U.S.-based nonprofits. It has completely removed the painful manual verification process. Responses are lightning-fast, the data is authoritative and trustworthy, and the Swagger UI + Bearer token setup is extremely developer-friendly. The free tier was more than enough to prototype and even run small-scale production checks. This API gives me full confidence before processing any donation or grant. I would happily recommend it to any developer or platform working in the nonprofit/fintech space.

Pros: Extremely developer-friendly and easy to integrate
Accurate, real-time data from trusted sources
Bulk lookups and transparent pricing
Automates due diligence perfectly

Cons: U.S. nonprofits only (no international support)
Free tier has limits—need paid for high volume
Requires coding; no simple dashboard for non-devs

Overall: I’ve been using the Nonprofit Check Plus API for my donation platform, and it’s honestly a game-changer. Integration was super straightforward—clean JSON responses, great docs, and it worked with curl on the first try. It pulls together IRS, OFAC, and other official data into one fast, reliable endpoint, which has saved me tons of time on manual compliance checks and fraud prevention. The free tier (200 checks/month) is generous for testing and small projects, and support has been responsive.

Pros: Integration was quick — simple request in, clean JSON out, easy to plug into a backend validation step. The free tier lets you properly test before committing. If your workflow already collects EIN details, it removes the usual manual lookup work and fits naturally into automation.

Cons: You’ll need to handle a few edge responses yourself since the docs mostly cover the happy path. There’s no UI or dashboard, so it’s clearly built for developers rather than ops teams.

Overall: It solves a narrow problem and does it reliably. Useful if you want to automate nonprofit status checks inside a product — just expect to manage implementation details on your side rather than getting a full compliance platform.

Pros: The Nonprofit Check Plus API by Pactman is fantastic! It’s fast, reliable, and easy to integrate. The data is accurate, which has made managing nonprofit partnerships much simpler. Highly recommended!

Cons: There are very few downsides. The only minor issue is that some advanced features could be more customizable, but overall it’s still very reliable and easy to use.

Overall: Overall, the Nonprofit Check Plus API by Pactman is excellent. It’s reliable, easy to use, and provides accurate nonprofit data, making our work much more efficient. Highly recommended!

Pros: Turns complex nonprofit data into clear, actionable insights

Promotes genuine accountability through open, validated information

Great tool for donors, partners, and analysts focused on trust and transparency

Intuitive structure with accessible starting points for all user types

Truly mission-aligned — focused on clarity over complexity

Cons: Some deeper analytics take time to fully explore the solution and capability

Overall: Nonprofit Check Plus API stands out as a dependable platform that simplifies how we understand and evaluate nonprofit organizations. It bridges the gap between raw data and meaningful insight, helping users make confident, evidence-based decisions. The API-first design also adds flexibility for developers and platforms looking to embed nonprofit credibility checks directly into their workflows. It’s a solid, forward-thinking solution that strengthens trust and transparency in the nonprofit ecosystem

Pros: Makes nonprofit information easier to understand and compare
Encourages accountability through data-driven insights
Useful for both individual donors and larger organizations
Clear focus on trust and transparency
Free access lowers the barrier to getting started

Cons: Some insights may take time to interpret for new users
Advanced use cases may require paid plans

Overall: Pactman offers a straightforward way to understand and compare nonprofits without guesswork. It focuses on clear, data-backed insights that help users make confident decisions. The platform feels purposeful, reliable, and built around real needs rather than hype. Overall, it’s a solid resource for anyone looking to support nonprofits more thoughtfully.

Pros: Brings transparency and clarity to nonprofit research
Centralizes nonprofit data in one easy-to-use platform
Helpful for donors, volunteers, and organizations
Unbiased evaluations (nonprofits aren’t charged)
Useful for compliance, research, and decision-making

Cons: Advanced features may require deeper exploration to fully utilize
Interface could feel data-heavy for first-time users

Overall: Pactman is a well-designed platform that brings clarity to nonprofit research and verification. It centralizes important data in a way that’s easy to understand and genuinely useful for donors, volunteers, and organizations alike. The focus on transparency and unbiased information stands out, especially since nonprofits aren’t charged for evaluations. Overall, it’s a practical and trustworthy solution for anyone who wants to make more informed decisions in the nonprofit space.

Pros: Easy to integrate: Clean REST API with clear JSON responses and solid documentation. Integration is straightforward and developer-friendly.

Reliable data sources: Uses authoritative datasets (e.g. IRS and compliance lists), which makes the results trustworthy for real-world compliance use cases.

Fast and consistent performance: Response times are quick and stable, even with repeated requests.

Useful endpoints: Features like bulk EIN lookup save time when validating large numbers of nonprofits.

Good free tier: Generous enough for testing and small projects before committing.

Cons: The API is very focused on nonprofit verification, so it’s not meant to be a general-purpose data service.

Advanced features may require a paid plan, which could be a consideration for high-volume use.

Overall: Nonprofit Check Plus API is a well-designed, reliable solution for nonprofit verification and compliance automation. It does exactly what it promises, with accurate data, fast responses, and an integration experience that respects developers’ time. A strong choice for donation platforms, grant management systems, and any application that needs dependable nonprofit validation.

Pros: The integration is incredibly smooth and provides immediate access to critical data from the IRS, OFAC, and PUB78 lists. It completely removes the need for manual lookups, which has significantly sped up our vetting process. The real-time nature of the data ensures we are always working with the most current information, providing a high level of confidence in our compliance and fraud prevention efforts. It is a reliable, developer-friendly tool that scales perfectly with our donation volume.

Cons: While the API is excellent for U.S.-based organizations, I would love to see expanded support for international NGOs in future updates. Additionally, more detailed documentation on specific error codes during high-traffic periods would be a helpful enhancement for the development team.

Overall: The Nonprofit Check Plus API by Pactman is an essential tool for any organization that prioritizes security and efficiency in the philanthropic space. It effectively automates the "trust but verify" aspect of nonprofit partnerships, allowing our team to focus on impact rather than paperwork. Since implementing this API, our due diligence workflow has become much more robust and error-free. I highly recommend it for anyone needing a simple, authoritative source for nonprofit data.

Pros: The API is easy to use and has clear instructions. It helps me check nonprofit information quickly and saves a lot of time. The responses are reliable, and it’s simple to integrate into my projects.

Cons: Some parts could have better error messages. Sometimes it is a bit slow.

Overall: Overall, this API works well and is easy to use. It gives me the information I need. I would recommend it to others.

Pros: Transparent and unbiased ratings
Easy compliance verification
Saves time with streamlined processes
Helps both donors and nonprofits equally

Cons: Interface could be a bit more user-friendly
Some features may take time to fully explore

Overall: This platform makes supporting nonprofits simple, transparent, and trustworthy. It provides clear insights into the health and impact of organizations, while also ensuring compliance checks are handled smoothly. I appreciate how it removes the guesswork and builds confidence in giving and volunteering.

Pros: The endpoints are simple enough to use but they provide well detailed information. Also there is free tier available.

Cons: There is nothing that I didn't like. It seems good.

Overall: The endpoints are simple enough to use but they provide well detailed information. Also there is free tier available.

Pros: - Super fast nonprofit checks
- Works with official government databases
- Easy for developers to use
- Free option available
- Catches potential red flags

Cons: - Only works in the U.S.
- Requires some technical skills
- Limited free checks

Overall: Perfect for teams that need to check nonprofit status fast. This API does the hard work of verifying organizations quickly and accurately.

Best For:
- Donation platforms
- Grant managers
- Compliance teams

A smart tool that saves time and reduces risk when working with nonprofits.

Pros: Really useful tool for sifting the chaff from the grains. Free tier is generous too for low volume checks

Cons: For now i can't find anything i didn't like. If i find I'll drop it here.

Overall: Easy to use. Authentication is good too. JSON Data is well laid out and easy to read and use. Nothing complicated

Pros: Developer friendly - with swagger UI (curl testing works well) (JSON response) (with good api documentations)
Free tier - good for startup
Reliable data - Used sources like OFAC, BMF etc, making it trustable and reliable
Demo key support well for multiple EINs

Cons: Country limited to the U.S only, can improve by supporting other countries and regions
Does not support non-developer usage, can improve by providing dashboard for non-technical users

Overall: Very easy to use, if support more countries then will be better. Also, many users are non-technical, so it will be good to support them as well.

Pros: -Ease of Integration: The API is well-documented, making it simple for developers to integrate into websites and applications.

-Secure Authentication: Authentication is managed through a Bearer token, providing a secure method for accessing nonprofit data.

-Bulk Checking: The bulk-check feature is ideal for users who need to verify large lists of nonprofit EINs at once.

-Clear Error Handling: The API provides clear error codes (e.g., 400, 401, 404, 500), which make troubleshooting easier.

-Comprehensive Data: The API offers access to detailed nonprofit data, helping businesses ensure they support eligible organizations.

Cons: -Limited Demo API Key: The demo API key provided is only valid for a limited number of EINs, which may be restrictive for testing purposes.

-No Parameters in Bulk Requests: The bulk request lacks more customizable options, which could be limiting for certain use cases.

-Pricing Transparency: The pricing page is not included in the documentation, which could make it difficult for users to assess the cost of using the API before signing up.

Overall: The NonprofitCheck Plus API v1.0 is a powerful and secure tool for verifying nonprofit organizations, especially for businesses looking to avoid supporting ineligible nonprofits. Its user-friendly documentation, secure authentication, and bulk-check functionality make it a great choice for developers. However, the limitations of the demo API key and lack of pricing transparency could be barriers for some users. Overall, it's a solid solution for ensuring nonprofit compliance with some room for improvement in accessibility and customization.

Pros: + Super dev-friendly – curl worked on first try, response JSON is clean and easy to parse.

+ Useful data – pulls from IRS BMF, Pub78, AROE (that one’s actually pretty valuable – tells you if a nonprofit lost exemption due to not filing).

+ Fast response times – sub-200ms consistently when I tested.

+ Free tier exists – decent for testing or small-scale use. Not always the case with APIs like this.

Cons: + Free limit’s a bit tight – 200 checks/month feels low if you're doing any kind of batch lookup. Would love to see 500+ :).

+ U.S. only – would be awesome if it supported nonprofit lookups outside the States (even just Canada or EU would help).

Overall: Really solid if you’re building anything donation-related or need nonprofit verification in the U.S. Could 100% see this being part of a browser-based lookup tool we’re planning for users. Just wish the rate limit were higher, and maybe broader country support long-term.

Pros: Reliable Data Sources: Pulls real-time data from trusted sources like IRS, OFAC, BMF, and PUB78 — critical for any platform dealing with nonprofit verification.

Streamlines Compliance: Automates what would otherwise be a time-consuming manual process for donation and grant platforms.

Good Documentation: The developer docs are clear and include integration examples, making setup faster for teams.

Prevents Fraud Early: Helps teams vet nonprofits before money or partnerships are involved, minimizing risk.

Simple Integration: RESTful API design makes it straightforward to integrate into existing backend systems.

Cons: No Public Demo or Sandbox: There isn’t a test environment or live demo for exploring the API before signup — a demo key would help.

US-Only Scope: Since it's based on IRS and U.S. databases, it doesn't support international nonprofit checks (yet).

Pricing Info Missing: There's no immediate mention of cost or pricing tiers on the main page — would be good to know up front.

Overall: This API fills a critical gap for developers working in nonprofit, finance, or donor platforms.
The ability to verify organizations using IRS, BMF, PUB78, and OFAC sources in real-time is extremely valuable for compliance and fraud prevention.
I especially like how clear the documentation is — the examples make integration approachable even for teams with less backend experience.
If your platform handles grants or donations, this is a tool worth integrating. It saves time and risk.