gql viewer

gql viewer provides a focused environment to query GraphQL APIs. It accepts a target endpoint or an embedded schema, supports standard introspection, and lets users craft operations with variables and headers. Users can test single queries or multi-operation documents, inspect the exact JSON response, and compare results across runs. It emphasizes precise input validation, structured error output, and deterministic formatting to aid debugging and integration tasks.
Conceptually, the tool builds a GraphQL request from the operation body, variables, and headers, then transmits it to the chosen endpoint. It measures latency and uptime, captures response data, and surfaces data, errors, and extensions in a consistent schema. Optional features include persisted queries, automatic variable guessing, and a sandboxed environment for safe testing against non-production endpoints. It supports batch requests where applicable and returns raw JSON alongside a human-friendly view.
Primary users include frontend and backend developers, API engineers, QA analysts, and data scientists who need rapid schema exploration, dependency checks, and reliable response validation. Unique value lies in combining local execution with clear error trees, timing telemetry, and a schema-aware query builder that reduces trial-and-error iterations. Use cases include API onboarding, debugging breaking changes after schema evolution, and performance profiling for complex queries.