Forge schema-bound, sandboxed tools at runtime. Paired with the cowork `forge` persona for chat-driven use in the voice-skill bridge. Use when you would otherwise write the same Bash snippet ≥3× with different parameters, when you need precise numerical results over a dataset, or when the user wants reproducible/deterministic output written to a file.
Voice mode for Claude Code — automatically reads assistant replies aloud via TTS, with German/English auto-detection and optional summarization for long responses. Trigger when the user mentions voice, vorlesen, sprachausgabe, TTS, "speak", "say it out loud", or asks about /voice-* commands.
ADR Gate — evaluates after non-trivial tasks whether an ADR is warranted; writes to Corvin-ADR repo when yes, names the skip reason when no, requires three-level analysis (conceptual/structural/implementation), and generates E2E tests for every new structural invariant so LDD has a loss signal.
Use when making any non-trivial recommendation, analysis, plan, design decision, code-review note, or architectural trade-off — before presenting to the user or acting. Forces a thesis / antithesis / synthesis pass so first-pass conclusions cannot ship without surviving their strongest counter-case.
Use when finishing any code change that modifies behavior, public API, CLI flags, config shape, defaults, error messages, or anything a reader-of-the-docs would model — before committing, pushing, or declaring "done." Forbids deferring doc updates to a follow-up commit, ticket, or "cleanup later."
Use periodically (weekly, at release candidates, before major version bumps) to scan a codebase for cumulative drift that no per-commit gate catches. Complements docs-as-definition-of-done, which prevents drift from being introduced per commit; this skill surfaces drift that already happened despite per-commit gates.
Use at the start of every inner-loop iteration where the goal is to fix a bug / close a failing test / reach a green E2E. Forbids editing code without first running the E2E to capture a fresh loss signal, and forbids declaring "done" without the E2E passing. Makes the cycle "E2E → loss → 5-why-by-layer → fix → E2E" the only admissible rhythm.
Use when a deliverable (document, diff, design, report, code module) is complete but "good enough, not great" and you want to improve it with a targeted re-iteration instead of starting over. Forbids re-running the task from scratch when refinement is more efficient. Operates on the y-axis (output) not the θ-axis (code or method).