Tokens never expire or are over-privileged—teams then argue across ownership lines.
Auth & limits
API Security Design
Public APIs that only need a known URL tend to fail loudly when traffic arrives.
Auth, permissions, rate limits, audit and sensitive-data protection.
Contract first
Resource models and error codes before coding.
Secure by default
Auth, rate limits and audit designed in—not bolted on.
Evolvable
Clear versioning keeps old clients working while shipping new capabilities.
Security gaps
These usually show up before a project starts—or right after a rushed launch.
Unsigned callbacks forged—it often surfaces only after production impact.
No rate limits—scrapers and replays hit hard—iteration and local integration slow down.
Logs print sensitive fields—users feel it as inconsistent data or UX.
Layered controls
Separate edge auth from business auth; verify callbacks; rate-limit critical routes; redact logs; document key rotation.
Choose controls by sensitivity—avoid one-size complexity. Covers sessions, open-platform signatures, callback verification and basic abuse controls.
- Scope written before coding
- Milestones you can accept
- Handover notes included
Highlights
What this engagement typically covers.
Auth selection
Included in scope after we confirm stack, constraints and acceptance checks.
Permission boundaries
Included in scope after we confirm stack, constraints and acceptance checks.
Rate limit/abuse controls
Included in scope after we confirm stack, constraints and acceptance checks.
Audit logs
Included in scope after we confirm stack, constraints and acceptance checks.
What you get
- Security design note
- Auth/permission impl
- Rate-limit policy
- Audit/redaction rules
- Checklist
How we work
-
01
Threat & data tiering, with written stage outputs.
-
02
Design sign-off, with written stage outputs.
-
03
Implement & test, with written stage outputs.
-
04
Ops handover, with written stage outputs.
Ready to lock scope?
Say if APIs are public and how sensitive data is—we'll propose controls.