GraphQL Schema Validator
Run simple GraphQL SDL text checks for braces, definitions and a query root. This browser linter does not fully parse or validate a schema.
Run simple GraphQL SDL text checks for braces, definitions and a query root. This browser linter does not fully parse or validate a schema. The scope note below explains what needs separate review.
GraphQL Schema Validator is a free Developer Utilities utility that runs entirely in your browser — nothing you enter is uploaded.
How to use GraphQL Schema Validator
- Paste the documented input format into the input field.
- Read the limited checks and any reported missing fields.
- Use a full implementation or the relevant consumer’s test for complete validation.
About this tool
Uses text patterns to count opening and closing braces, find definition keywords and look for a query-root declaration. It does not parse GraphQL SDL, ignore braces inside comments or strings, resolve referenced types, validate fields or execute queries. A passed basic check does not establish a valid GraphQL schema.
Review the generated values before publication. JSON serialization alone does not establish vocabulary correctness or search-feature eligibility.
Frequently asked questions
How do I use GraphQL Schema Validator?
Run simple GraphQL SDL text checks for braces, definitions and a query root. This browser linter does not fully parse or validate a schema.
Does GraphQL Schema Validator cost anything?
No — GraphQL Schema Validator is completely free, with no sign-up and no hidden limits.
Does GraphQL Schema Validator upload my data?
No — GraphQL Schema Validator processes everything locally in your browser, so nothing you enter is uploaded or stored.
Does this tool fully parse and validate GraphQL SDL?
Uses text patterns to count opening and closing braces, find definition keywords and look for a query-root declaration. It does not parse GraphQL SDL, ignore braces inside comments or strings, resolve referenced types, validate fields or execute queries. A passed basic check does not establish a valid GraphQL schema.
Does GraphQL Schema Validator work offline?
Once the page has loaded, GraphQL Schema Validator keeps working with no network connection.