Question 1

How do I create secure Convex functions with proper validation and authentication?

Accepted Answer

To create secure Convex functions, you define `args` and `returns` validators for type safety and enforce authorization using `ctx.auth.getUserIdentity()` checks before reading or writing protected data.

Question 2

When should I use a Convex action versus a mutation for backend operations?

Accepted Answer

Use a Convex mutation for transactional writes and a Convex action for external API calls or integrations requiring Node.js-only SDKs, ensuring you correctly await promises within the action boundary.

Question 3

How do I enforce ownership and permission checks in a Convex mutation?

Accepted Answer

You enforce ownership in a Convex mutation by calling `ctx.auth.getUserIdentity()` to authenticate the user, then applying explicit permission checks against the resource before executing the database write.

Question 4

Can I use Node.js-only SDKs within my Convex backend functions?

Accepted Answer

Yes, you can use Node.js-only SDKs within Convex actions by including the `use node` directive, allowing you to safely integrate external APIs and libraries that require a Node runtime environment.

Question 5

What is the best way to handle internal backend-only operations in Convex?

Accepted Answer

For backend-only operations like scheduled tasks, use `internal.*` function definitions to prevent external client calls, and apply descriptive error handling alongside indexed querying for operational safety.

function-creator

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