Skill UI

Registers zero-knowledge SNARK proof verification keys, circuit complexity constraints, and nullifier tracking for double-spending prevention in privacy systems. Provides standardized field schemas, SQL DDL, JSON validation, and best practices for auditable cryptographic verification across distributed applications and smart contracts.

This skill resolves missing measures by reusing saved custom metrics or creating ephemeral formulas. It guides users to confirm metric definitions, units, and aggregation logic before calculation. It prioritizes native outputs and saved metrics over formula creation. The skill ensures validation of formulas and reports results as non-persistent data without saving new definitions.

This skill helps design and review API contract tests between providers and consumers. It focuses on verifying wire-level behavior during schema changes, compatibility regressions, and client integration failures. By using local fixtures and existing tools, it ensures type assertions alone are not validation. It classifies changes as breaking or compatible, builds test matrices for various scenarios, and verifies boundaries without provisioning new services.

Write Quarkus application code including REST APIs, validation, OpenAPI, CDI, Hibernate ORM, and reactive messaging. Configure extensions, manage security with OIDC, and implement observability features like health checks and metrics. Use this skill for implementing or modifying features in existing Quarkus projects, ensuring proper build-time resolution and virtual thread usage.