HTTP API response quick deck
Recall API response conventions that make frontend behavior predictable.
Status codes Should a validation failure return 200 with error true or a 4xx status? Use success status for successful actions, not for easier branching. Problem Details What fields make an API error actionable? Think client, user, and support. Status, stable type or code, user-safe detail, and request ID. Optional fields can include invalid field names, retry timing, or documentation links. Idempotency If the payment request times out, the frontend can just submit again. A user action may create duplicate side effects. Your line Retries need an idempotency key so the server can return the original result instead of creating…
Sign up free — one personalized lesson every day, matched to your role and goals.
Already have an account? Sign in