For insurance companies, an API is no longer just a technical connection between two systems. Increasingly, it is a business connection between carriers and the growing ecosystem of agencies, insurtech startups, distribution platforms, enrollment systems, data providers, and service partners around them.
The challenge is that opening systems to outside partners introduces complexity just as quickly as it creates opportunity. A well-designed insurance API should therefore accomplish making it easier for partners to build with you while making it harder for the wrong people to access what they shouldn’t.
Start With the Partner Experience
Insurance companies naturally tend to design technology around internal systems. Partners don’t see those systems.
They see endpoints, documentation, authentication requirements, error messages, test environments, and data structures. That means API design should begin by asking how difficult it will be for another company’s development team to integrate with us successfully.
The creation of the OpenAPI Specification was around this basic concept. It provides a standardized, programming-language-independent way to describe HTTP APIs so that developers and systems understand what a service does without needing access to its underlying source code, and supports documentation, testing, infrastructure configuration, and client-code generation.
For insurers, adopting standardized API descriptions reduces unnecessary issues when onboarding new technology partners.
Don’t Make Partners Learn Your Entire Insurance System
A startup connecting to an insurer shouldn’t need to understand decades of legacy architecture to retrieve a quote, verify eligibility, submit an application, check a policy status, or access permitted customer information. Think in terms of clear business capabilities such as:
- Retrieve quote
- Submit application
- Check application status
- Retrieve policy information
- Verify eligibility
- Submit supporting documents
- Update permitted customer information
The API should provide a clean layer between the partner and the complexity underneath it. That approach can also make it easier to replace or modernize internal technology later without forcing every external partner to rebuild their integration.
Security Has to Be Designed In
Insurance APIs may touch personally identifiable information, financial information, policy records, claims information, health-related information, or other sensitive data. That makes security part of the product, not something added after development.
The OWASP API Security Project warns that APIs often expose application logic and sensitive data to make them easier to attack. Its API Security Top 10 identifies risks including broken object-level authorization and authentication, unrestricted resource consumption, security misconfiguration, improper inventory management, and unsafe use of third-party APIs.
Authorization is really important. OWASP notes that authorization remains one of the biggest challenges in API security as organizations manage increasingly complex combinations of endpoints, parameters, users, and permissions.
For insurers, that means don’t simply authenticate a partner. The API also needs to determine exactly what that partner is authorized to see and do.
Modernize Authentication Too
API modernization shouldn’t stop at creating REST endpoints. Authentication and authorization standards need to evolve alongside them.
In January 2025, the Internet Engineering Task Force issued RFC 9700, its best guidance for security. This guidance updates previous OAuth security recommendations using the most recent practical experience with newer threats and removing some less secure approaches completely.
For insurance companies building partner ecosystems, authentication standards shouldn’t remain frozen simply because an integration still works.
Create a Sandbox Before Giving Access to Production
One of the easiest ways to improve the partner experience is to give developers somewhere safe to experiment. A strong partner API program should include documentation, sample requests and responses, test credentials, realistic test data, predictable error messages, version information, and a sandbox environment.
The goal should be for a capable development team to understand the integration without scheduling meeting after meeting with the carrier’s IT department.
Good documentation isn’t just developer convenience, but a scalability tool.
Treat Third-Party APIs as a Two-Way Risk
Insurers also need to think beyond protecting their own endpoints. OWASP specifically identifies Unsafe Consumption of APIs as a security concern.
Organizations can place too much trust in data received from third-party services, potentially applying weaker validation, authentication, transport-security, or sanitization requirements to those integrations. That matters enormously in insurance, where one workflow may involve a carrier, distributor, enrollment platform, data provider, payment service, CRM, and several other systems.
Every connection expands the ecosystem, and potentially the attack methods.
Build APIs Like Products, Not IT Projects
Perhaps the biggest mindset change is organizational. An API shouldn’t be considered finished simply because it technically works.
Insurance companies should think of partner APIs as long-term products with owners, documentation, security standards, versioning policies, performance expectations, usage analytics, developer support, and a clear roadmap. Partners also need advance notice when something changes.
Breaking an endpoint isn’t simply a technical inconvenience when another company has built its customer experience around it.
The Bigger Opportunity for Insurance Companies
The real value of APIs isn’t that they allow System A to communicate with System B. It’s that they can make an insurance company easier to do business with.
A startup may bring a better customer experience. An agency platform may create a new distribution channel.
A technology provider may automate a process that currently takes days. Another partner may introduce a capability the insurer hasn’t even considered yet.
Insurance companies don’t have to build every innovation themselves. But they increasingly need an architecture that allows innovation to connect to them.
The insurers that design secure, understandable, well-documented APIs aren’t simply modernizing their technology stack. They’re creating infrastructure that can make the next partnership, and potentially the next major distribution opportunity, much easier to launch.
The insurance industry needs to move fast and be open to new ideas. Agility Holdings Group invests in InsurTech, HealthTech, and other companies that focus on better care and results.
Connect with us on LinkedIn to learn how we can help your organization innovate, achieve your goals, and stay ahead in the changing insurance industry. Contact us today to get started.