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Code RoomREST to GraphQL migration sequencing
HardPrep Room Coding #4686

REST to GraphQL migration sequencing

Vibe & agenticNetworking & APIsCode quality & reviewSenior–Staff~26 min

Leadership wants your REST API migrated to GraphQL and suggests pointing an AI agent at the OpenAPI spec to 'generate the whole schema and resolvers.' You have 80 endpoints, real production traffic, and downstream mobile clients on old app versions. How do you scope this for the agent and sequence the migration so nothing breaks?

Implement
count_resolver_queries(owner_ids: list[int], batch_size: int) → int
Examples
in[[7,7,8],1]out4
in[[7,7,8],10]out2
in[[1,2,3,4,5],2]out4
What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it (tests, edge cases, reading critically), and how you’d re-prompt or decompose to get it right.

0:00 of about 26 min

Vibe & agentic: describe the solution in plain language (or narrate it) and the coach grades your approach.

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.