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Use when creating or modifying REST endpoints, controllers, DTOs, or error handling in Java Spring services - response envelopes, pagination, Problem Details, package layout.
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Basierend auf der SOC-Berufsklassifikation
Use when reviewing code, a diff, a module, an architecture, or a design/spec document against house standards - including multi-expert panel reviews ("review with a DDD expert and an asset-finance expert"). Also when running a removal-first simplification sweep: "what can we remove", "product simplification review".
Use when executing an implementation plan or building a scoped feature or fix - after scope is clear, before code gets written. Triggers on "implement the plan at PATH", "start slice SP-2b".
Use when investigating any bug, error, crash, stack trace, failing or flaky test, incident, regression, unexpected behavior, or "why is this happening" question - before proposing or applying a fix.
Use when an implementation needs proof against the live running stack: after build completes, before ship, or when asked to verify, e2e-test, smoke-test, or demo that an API, UI, or DB change actually works.
Use when building or styling sportsbook, betting, or casino (iGaming) interfaces: odds displays, betslips, live-event states, suspended markets, casino game grids, or wallet and money surfaces.
Use when writing or reviewing code that posts, holds, voids, reverses, or reconciles money movements - double-entry postings, wallet balances, idempotency keys, FX conversion, or Blnk / pgledger integration.
| name | spring-api |
| description | Use when creating or modifying REST endpoints, controllers, DTOs, or error handling in Java Spring services - response envelopes, pagination, Problem Details, package layout. |
{data, meta{requestId, timestamp, traceId}}; cursor pagination fields live in meta. Preserve an established public contract unless a migration is approved.errors[] array and traceId; preserve an established error contract unless migration is approved./api/v1/payment-links when it uses path versioning).api/, application/, domain/, and infrastructure/ have real responsibilities; do not add empty layers to a simpler module.RestClient for synchronous Spring Framework 6.1+ code, WebClient for an existing reactive stack, and do not add a second client stack merely to modernize. Use .formatted() only when the detected Java version supports it and it matches local conventions.pageSize + 1 to compute hasMore.Full style guide with snippets: references/api-conventions.md (read before scaffolding a new endpoint; reuse existing request/response models before defining new ones).
Use @WebMvcTest when controller contract behavior changed and Testcontainers when persistence behavior changed. Add only the layers needed to prove the change.