auditing-graphql-nullability

To audit GraphQL schema nullability, you review object types, root fields, lists, and inputs for missing non-null constraints. This process identifies risky nullable fields and generates precise SDL fixes with severity ratings and downstream consequence explanations.

GraphQL nullability causes silent error swallowing when over-permissive nullable fields hide structural failures instead of surfacing them. Auditing schema nullability tightens client contracts by adding non-null markers to required fields, preventing avoidable defensive coding and weak API guarantees.

Yes, nullability audits work with federated subgraphs by recognizing externally resolved nullable fields. The audit distinguishes between valid federation patterns and genuinely risky cases, flagging only the schema hardening opportunities that require precise SDL non-null constraint additions.

To fix nullable list types and required scalar fields in GraphQL SDL, you add non-null markers to tighten collection shapes and enforce required constraints. The audit provides a direct before-and-after SDL diff with field-path findings and concrete replacement SDL.

Yes, you can review GraphQL input arguments and mutations for missing non-null constraints. The nullability audit evaluates these schema elements alongside queries and object types, producing per-field findings with severity ratings and specific SDL replacements to harden the API contract.