Node Back-end
Secure Node.js and TypeScript APIs: contract, validation, authorization and tests
- Live data
- Memory
Solver screenshots
Walks your AI through an API engineering process for Node.js and TypeScript: it writes the endpoint contract, validates input with strict schemas, authorizes by resource owner, standardizes errors, protects against abuse and delivers tests that prove the security rules hold. The knowledge base covers OWASP API Top 10 2023, Express 5, Node LTS, zod 4 and RFC 9457, each with source and date, and the method adapts to your framework, your authentication and your database. Use it for a new endpoint, a security review, or diagnosing a slow or unstable API. It does not run your code or do penetration testing: the tests are written for you to run, and the review is done by reading the code.
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Before and after
Same request, two answers. On the left, the AI on its own; on the right, with Node Back-end connected.
Create a PATCH /orders/:id endpoint in Express to update the delivery address.
“app.patch('/orders/:id', async (req, res) => { const order = await Order.findByIdAndUpdate(req.params.id, req.body); res.json(order); });”
“Writes the contract first (who owns the order, what is immutable, which responses exist). Delivers strict validation for the address field only, a query with the owner in the filter (another user's order returns 404, no IDOR), 409 when the order has already shipped, errors in problem+json, output through a mapper, and tests for a different owner and for extra fields.”
What makes this solver different
These points were checked by the Solvers team before the solver went on the storefront.
- Live dataUp-to-date knowledge, maintained with source and date.
- MemoryLearns your preferences and remembers you in the next conversation.
What you need to use it
Check before buying. In the guided installation, each item becomes a check with a status.
Compatible AIs
You use the AI you already have. Solvers doesn't charge for it.
Required connectors
Just connect Solvers to your AI. No other tool is needed.
Recommended plan
Suggested by the creator. Custom connectors may require a paid plan for your AI.
What's in the package
A 5-step method, from the endpoint contract to the security review, with an exit checklist for each step
Knowledge base with source and date: OWASP API Top 10 2023, Express 5, Node LTS, zod 4, RFC 9457, passwords and JWT
Ready-made templates: endpoint contract, Express 5 skeleton with zod, test matrix and review checklist
Your project profile (framework, validation, authentication and database) saved in the specialist's memory
Updates for version 1.x