Compliance & Financial Services API
Your Brand,
Our Infrastructure
Expand your platform and create new revenue streams with payment processing, expense management, and compliance solutions, with Crowded’s API.
Your customers interact with your brand throughout their financial journey.
Ways to Leverage the Crowded API
Payment Processing
Leverage our low-cost payment processing service. Create secure, customizable payment links for fixed amounts or donations. Our fundraising solution is complete with added goals and auto-tax deductible receipts.
Spend Management
Comprehensive expense management tools powered by Visa with spend controls, automated purchase categorization, and receipt management.
Form 990 Filing
Offer a white-labeled, integrated Form 990 filing experience to accountants or nonprofits. Crowded is a certified IRS e-filer and the first to make Form 990 filing availiable via API.
Tiered Account* Architecture
Flexible account hierarchies enabling multi-tenant structures and chapter fund separation. Tiered access and visibility into cash flow across an organization.
Nonprofit Verification
Automated tax-exempt status verification for 501(c)(3) orgs via Crowded’s native IRS integration. Streamline compliance workflows and reduce manual verification.
Who Works with Us:
- CRM Platforms
- Fundraising Software
- AMS
- Registration Platforms
- Sports Management Platforms
- Event Management Software
- Nonprofit Accounting Software
Each Partner is Assigned:
- Developer API Docs & SDKs
Modern API Architecture
Industry-Standard Implementation
Our RESTful API follows best practices with clear endpoints, comprehensive versioning, and developer documentation. JSON data exchange, robust security with API keys, and TLS encryption ensure your integrations are both powerful and secure.
Also, integrate our tools via iframe into your platform, fully white-labeled.
Security
Enterprise-Grade Security & Compliance
- PCI-DSS compliant with SOC II grade security audit
- API key management with custom permissions
- Authentication with OAuth 2.0 Bearer Token
Crowded API in Action
Guarantees
Compliance & Risk Management
We Handle Regulatory Complexity
- Partner bank* and regulatory relationships managed
- KYB/KYC, AML and OFAC workflows handled
- Transaction monitoring and bank-grade fraud prevention
- Approval workflows for compliant marketing
Headache-free Support
Leave the support to us
- Your customers and their users can independently report fraud, freeze, cancel, and reissue cards backed by Visa Fraud Protection
- Accounts can be managed completely without requiring your support infrastructure
- Support ticket routing to Crowded support for quick turnaround times, and low lift requirement of your support teams

Let’s chat!
Kyle Ungerman,
Head of Partnerships
answered.
Have other questions ? View more FAQ
How long does integration typically take?
Most partners complete their integration within 4-8 weeks, depending on complexity and scope. We provide dedicated solutions engineering support throughout the entire process.
What level of technical resources do we need?
Can we access the API documentation before signing an agreement?
Yes! Our documentation is available upon request. To access the docs, fill out this request form.