auditing-graphql-nullability

What problem does it solve?

This Skill audits GraphQL schemas for over-permissive nullability so teams can prevent silent error swallowing, weak client contracts, and avoidable defensive coding.

Core Features & Use Cases

• Reviews object types, root Query and Mutation fields, list nullability tiers, and input arguments for missing non-null constraints.
• Distinguishes genuinely optional domain fields from nullable identifiers, required business fields, and collection shapes that should be tightened.
• Handles federated subgraphs by recognizing externally resolved nullable fields and flagging only the risky cases that need schema hardening.
• Produces per-field findings with severity, downstream consequence, and concrete SDL replacements that add the right ! markers.

Quick Start

Ask the skill to audit your GraphQL schema for over-permissive nullability and return specific SDL fixes with field-by-field consequences.