Schemathesis GraphQL API
Schemathesis is a property-based API testing tool that automatically generates test cases from OpenAPI and GraphQL schemas to find bugs and spec violations. It detects server crashes, schema violations, validation bypasses, and integration failures with minimal maintenance overhead—tests adapt automatically as schemas evolve.
Overview
Schemathesis GraphQL API is a GraphQL API specification published by Schemathesis on the APIs.io network.
Schemathesis is a property-based API testing tool that automatically generates test cases from OpenAPI and GraphQL schemas to find bugs and spec violations. It detects server crashes, schema violations, validation bypasses, and integration failures with minimal maintenance overhead—tests adapt automatically as schemas evolve.
documentation is published at https://schemathesis.io.
The specification includes 2 reference links.
Tagged areas include API Testing, Contract Testing, Fuzzing, OpenAPI, and Property-Based Testing.
Endpoint
References
- Documentation https://schemathesis.readthedocs.io
- GettingStarted https://schemathesis.readthedocs.io/en/stable/getting-started.html
Work with this as data
Every GraphQL schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for graphql
4 MCP tools reach this
find_graphqlBrowse and filter every GraphQL schema in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/graphql/schemathesis-graphql"curl "https://apis.io/api/v1/graphql?limit=25"Discovery needs no key. Ratings and market analysis are Pro.