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Build a walking skeleton — the thinnest runnable system that proves build, test, and runtime work end-to-end. Use when starting a new project, before any feature work. Front-loads tooling and infrastructure so every subsequent slice is cheaper.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Read and write a Petri net (SDCPN) document by Automerge URL. Use when creating, editing, or querying Petri nets — adding or removing places, transitions, arcs, color types, differential equations, and parameters.
Create and maintain an Assumption Ledger — a persistent record of assumptions, their confidence, and validation status. Use when starting a new slice, resuming work in a new context window, or when implicit assumptions risk causing drift. Tracks requirements, architecture, and implementation assumptions.
Create or update a concept capsule — the conceptual anchor for a project or feature area. Use before writing code on a new project or feature, or when terms and boundaries feel unclear. Defines glossary, invariants, happy-path scenario, and non-goals.
Write a tracer-bullet card — a precise specification for one thin end-to-end slice of work. Use when scoping a new slice, defining what to build next, or breaking a feature into provable increments. Covers target behavior, boundary crossings, risks, and definition of done.
Create characterization tests (Golden Master) for existing code so you can refactor or replace safely. Use before refactoring, strangler-replacing, or modifying code with unclear behavior. Captures observable behavior with a minimal harness, producing tests, fixtures, and a coverage report.
Methodology triage consultant for tracer-bullet development. Use when unsure which pragma skill to run next, when starting a new project, or when the current approach feels stuck. Interviews the user, assesses state, and recommends the next pragma skill.
| name | skeleton |
| description | Build a walking skeleton — the thinnest runnable system that proves build, test, and runtime work end-to-end. Use when starting a new project, before any feature work. Front-loads tooling and infrastructure so every subsequent slice is cheaper. |
| argument-hint | [project description and tech stack] |
Build a walking skeleton (Cockburn) — the thinnest possible runnable system that proves the entire pipeline works: build, test, run.
The project description and tech stack: $ARGUMENTS
Precondition: a concept capsule must exist. If none exists, stop and recommend /pragma:capsule first. Use glossary terms even for the "hello world" path.
IS: project builds, test runner runs with ≥1 passing test, one minimal path executes end-to-end, happy-path scenario from capsule has a placeholder.
IS NOT: a feature (no business logic), an architecture (no layers/patterns beyond what the single path requires), comprehensive (one path, one test, one entry point).
Minimal project structure: init project, configure test runner, create entry point.
/pragma:hardenA single test proving the pipeline works: import from source, assert something trivially true, run and confirm green. This is a pipeline test, not a feature test.
Make the entry point do something minimal and observable:
Touch the same boundaries real slices will cross, but with trivial logic. If the capsule has a happy path, create a placeholder.
Run all available checks (typecheck, tests, build, run entry point). Fix before moving on — the skeleton is not done until the full pipeline is green.
/pragma:card → /pragma:slice for the first real behaviorState: foundation, Next: /pragma:card, Loop: /pragma:consult (default unless user explicitly continues directly)