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Use when something is broken, failing, slow, throwing, flaky, or behaving unexpectedly.
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Turn a loose idea into a sequenced map of investigation tickets, then drive them to resolution one at a time.
Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.
Use when creating, designing, writing, implementing, auditing, reviewing, improving, or optimizing conversion-focused landing pages, including PPC, lead generation, SaaS, ecommerce offer, signup, demo, trial, download, local-service, and campaign pages.
Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Anti-AI-slop design skill for greenfield pages, audits, redesigns, and design extraction from URLs or screenshots. Use when the user asks to build a new app or landing page, wants to redesign something, invokes Hallmark by name, or uses audit/redesign/study.
7-phase High-Level Design framework: clarify requirements, estimate scale, design components, model data, define APIs, deep dive on bottlenecks, and enumerate failure modes. Use for any system design question or production architecture task.
Basierend auf der SOC-Berufsklassifikation
| name | diagnose |
| description | Use when something is broken, failing, slow, throwing, flaky, or behaving unexpectedly. |
Build a tight failing loop and find root cause before proposing fixes.
Diagnose owns investigation until there is a root cause and a red-capable loop.
Do not jump to build while the failure is still a theory.
build for the fix.diagnosing-bugs for hard bugs, performance regressions, flakiness, and
feedback-loop construction.systematic-debugging for strict root-cause discipline and multi-layer
evidence gathering.firecrawl when current external docs, issue trackers, or release notes may
explain the failure.vercel-react-best-practices when the failure is React/Next performance or
data-flow related.Done when there is one command or reliable loop that demonstrates the bug, a clear root-cause hypothesis supported by evidence, and a path to a regression test or documented reason no correct seam exists.