MCP really is USB-C for AI agents. That’s a genuinely exciting thing.

You can build an AI that handles your entire e-commerce ops, or triages your logistics exceptions, or surfaces the right patient data at the right moment in a clinical workflow — with a single, clean integration layer.

Just wire up the signature validation before you go to sleep.

The Quick Checklist Before You Ship:

1. Webhook signature validation uses hmac.compare_digest on raw bytes.

2. OAuth tokens are cached and proactively refreshed (not on 401).

3. Per-client locks prevent token stampedes.

4. print/console.log goes to stderr on stdio transport.

5. Tool count is ≤ 15, designed around outcomes not endpoints.

6. Tool outputs are sanitized before returning to the model.

7. Max-depth guard prevents infinite agent loops.

8. Secrets use secret types (not plain strings) — they won’t appear in logs.

9. Provider logic is behind an adapter — the MCP interface is stable.

Read more and get FREE & Discount access to my video courses here 👉 rakiabensassi.substack.…