GraphQL Schema to Resolvers Signature Converter
Paste a GraphQL SDL schema to instantly generate resolver map stubs for every field on your Query, Mutation, and Subscription root types. Free online developer tool.
Paste GraphQL Schema (SDL)
Resolver Signatures
Resolver signatures will appear here...
Free GraphQL Schema to Resolvers Signature Converter
Paste a GraphQL SDL schema to instantly generate resolver map stubs for every field on your Query, Mutation, and Subscription root types — a ready-made skeleton for wiring up your server logic.
How to Use It
Paste your GraphQL schema definition language (SDL) into the input box, or click "Load Example" to see a sample run. The tool builds a real schema with GraphQL.js, finds the Query,Mutation, and Subscription root types (whichever are present), and emits a(parent, args, context, info) => ReturnType stub for every field, grouped by root type, with a comment listing each field's arguments when it has any.
Example
A Query { user(id: ID!): User } field generates a Query block containing // args: { id: ID! } followed by user: (parent, args, context, info) => User, — a stub ready to fill in with your actual data-fetching logic.
Common Use Cases
- Scaffolding a resolver map when starting a new Apollo Server or graphql-js server project.
- Making sure every field in a schema has a corresponding resolver stub before implementation.
- Reviewing a schema's surface area by seeing every resolvable field at a glance.
- Onboarding a new contributor by handing them a checklist of resolvers still to implement.
FAQs
Does this generate real resolver logic?
No — it generates signature stubs only. Each resolver body is left empty for you to fill in with your actual data-fetching or mutation logic; the tool's job is to make sure you don't miss a field and to show you each field's arguments and return type up front.
What if my schema has no Mutation or Subscription type?
The tool only emits a block for root types that actually exist in your schema — if you have no Mutation or Subscription type defined, those sections are simply omitted.
Is my schema uploaded anywhere?
No — parsing and stub generation happen entirely client-side in your browser. Nothing you paste is sent to a server.