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API Security Hardening

We review and harden your API surface so common production risks are handled properly: unsafe headers, loose CORS, missing rate limits, weak validation, noisy errors, and sensitive data exposure.

ExpressNode.jsHelmetZodRate limits

Fixed starting scope

Each feature starts with a clear base package, then grows only if your app needs more integrations, screens, or edge cases.

Integrated into your code

We adapt implementation to your stack instead of dropping a generic snippet that still needs hours of cleanup.

Handoff included

You get implementation notes, environment variables, testing notes, and what to watch before pushing to production.

What you get

Security headers configured with Helmet or framework-native equivalents.
Request validation added to high-risk endpoints.
Rate limits for auth, write, and public endpoints.
Sanitized error responses that do not leak stack traces or secrets.
Short hardening report with files changed and remaining recommendations.

How we implement it

1

Audit existing routes, middleware order, auth boundaries, and error handling.

2

Add or tune security middleware without changing business behavior.

3

Patch obvious validation gaps on selected endpoints.

4

Run local verification for expected success, rejected bad input, and rate-limit paths.

5

Hand over notes with next steps for deeper security work if needed.

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