Summary

Expedia’s mockql-rs generates data for annotated fields at request time while forwarding real fields upstream, allowing partially implemented schemas to support development and testing. The GraphQL RFC remains a stage-zero strawman, but its current design requires mock validation in application test suites and includes guidance for coding-agent skills.

Why it matters

Schema-aware generated fixtures could reduce frontend/backend coordination cost, but incompatible meanings for the same @mock directive create an immediate interoperability risk.

Sources