GraphQL Inspector

Free tool that detects breaking changes and validates operations against a GraphQL schema.

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GraphQL Inspector is a free tool that compares GraphQL schema versions and reports every change as breaking, non-breaking, or dangerous, while also validating operations and fragments and finding duplicate types. It runs as a GitHub App, GitHub Action, CLI, or programmatically, and is aimed at developers who want to catch breaking API changes before they ship.

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Behind the summary, Matchbox keeps a richer profile of GraphQL Inspector - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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