How exactly did you open the Playground? If you’re running
yarn dev instead of
yarn start, it should open the Playground including the side-menu where you can choose between the Prisma API and the actual GraphQL API of the Yoga server.
The idea behind hiding the Prisma API when running
yarn start is for security concerns. Only in
dev mode you should be able to run queries/mutations against the Prisma API since it exposes read/write-access to all your data!
Please let me know if you used
yarn dev or
yarn start. If you indeed already used
yarn dev, we’ll have to debug further!