Security testing for api backends
Every indie hacker app has an API backend -- whether it is a Next.js API route, Express server, or Supabase edge function. AI-generated APIs frequently lack input validation, rate limiting, and proper auth, making them vulnerable to injection, unauthorized access, and abuse.
Scan your api backends for vulnerabilities
Why security matters for api backends
API Backends handle sensitive data and business-critical operations. A single vulnerability can lead to data breaches, financial loss, and damaged reputation. VibeEval automatically tests for the most common security issues specific to api backends.
Top vulnerabilities in api backends
SQL/NoSQL Injection
User input passed directly into database queries without parameterization, allowing attackers to extract, modify, or delete data through crafted payloads.
Broken Authentication Tokens
JWT tokens without expiration, using weak signing algorithms, or with secrets that can be brute-forced, allowing attackers to forge valid authentication tokens.
Missing Rate Limiting
API endpoints without request rate limits, enabling brute force attacks on authentication, enumeration of resources, and denial of service.
Mass Assignment
API endpoints that accept and process all fields in request bodies, allowing attackers to modify protected fields like role, permissions, or account balance.
Insufficient Input Validation
Missing or incomplete validation of request parameters, headers, and body content that allows malformed data to reach business logic and cause unexpected behavior.
Verbose Error Responses
Error messages that expose stack traces, database schemas, internal paths, or dependency versions that help attackers map the application architecture.
How VibeEval secures api backends
Three steps to find and fix security issues in your api backends.
VibeEval tests every API endpoint for injection vulnerabilities including SQL, NoSQL, command injection, and SSRF
Our scanner validates authentication and authorization on all routes, catching missing auth middleware and broken token validation
Get API-specific findings covering rate limiting, input validation, and error handling that follow OWASP API Security Top 10
Frequently asked questions
How does VibeEval discover API endpoints?
VibeEval crawls your application, analyzes JavaScript bundles for API calls, tests common endpoint patterns, and accepts OpenAPI specifications for broad coverage.
Can VibeEval test GraphQL APIs?
Yes. VibeEval tests GraphQL endpoints for introspection exposure, query depth attacks, authorization bypass on resolvers, and injection through variables.
Does VibeEval follow the OWASP API Security Top 10?
VibeEval tests cover all OWASP API Security Top 10 categories including broken authentication, excessive data exposure, lack of resource limiting, and injection attacks.
How do I secure JWT tokens in my API?
Use strong signing algorithms like RS256, set short expiration times, implement token refresh flows, and validate tokens on every request. VibeEval checks for all common JWT misconfigurations.
Should I use API keys or OAuth for authentication?
OAuth is more secure for user-facing APIs, while API keys work for server-to-server communication. VibeEval tests both mechanisms for proper implementation and security.
Related resources
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Step-by-step security walkthrough
Security Guide
Step-by-step security walkthrough
Security Guide
Step-by-step security walkthrough
Test your api backends before launch
Start testing your api backends for security vulnerabilities with VibeEval.