Engineering
Chapter 18 of 35
Generate an interactive bash wizard that walks a human through steps only they can perform.
3 minutes · 574 words · 5 sections
A wizard is a bash script that walks a human, step by step, through a manual procedure that’s tedious to do by hand and tedious to re-explain to an AI every time. It opens each URL, says exactly what to click and copy, captures the values, writes them where they belong (.env, GitHub secrets), confirms at every stage, and shows how many stages are left. It might configure third-party services, run a one-off migration, or move the project from one state to another.
The delightful UX is already solved by template.sh (opens in a new tab) — stage-by-stage progress, confirmation gates, cross-platform URL opening (including WSL), hidden secret entry, idempotent .env upserts, gh secret/gh variable writes, and a closing summary. Your job is only to scope the procedure and author its stages. The library above the STAGES marker is identical in every wizard; that consistency is the point — never hand-edit it.
A wizard is ephemeral by default — built for one run, saved to a scratch or scripts/ path, deleted when the job’s done. Commit it only when the user wants a repeatable setup path that should live in the repo.
Work out every manual step the human must take and every value that gets captured along the way. Read the repo first — don’t ask cold:
.env, .env.example, .env.*, README, docker-compose*, framework config, and .github/workflows/* (every secrets.* / vars.* reference is a value the wizard must produce).Then show the user the ordered list of stages and the values each produces, and confirm — they may add, drop, or reorder.
Done when: every stage is named in order, and for each captured value you know (a) where the human gets it, (b) where it’s written (.env, a GitHub secret, both, or nowhere — some stages are pure actions), and (c) whether it’s secret (hidden entry) or public.
For each stage, write the precise path a human follows: which URL to open, what to do there, where a value is shown, which variable it fills — e.g. “Dashboard → Developers → API keys → Reveal test key → copy”. Where you don’t actually know the current UI or the exact command, say so and ask the user or check the docs — never invent steps that may not exist.
Done when: every stage traces to concrete instructions a stranger could follow.
Copy template.sh to the target path. Replace the example stage with one stage per step, in dependency order. Use the library helpers — stage, say/step, open_url, ask/ask_secret, write_env, set_secret/set_var, pause/confirm — and set TOTAL_STAGES to the number of stages you wrote.
Hold the bar the template sets: open the URL before asking for its value, use ask_secret for anything secret, write_env every persisted value, set_secret only the values CI actually needs, and confirm before any irreversible action. Each stage clears the screen so only the current step is visible — keep a stage to one focused task so nothing the human needs scrolls away. Don’t touch the library above the marker.
bash -n <script>; run shellcheck if available.chmod +x <script>.set_secret name exactly matches a secrets.* reference in CI.Install this repository
npx skills add mattpocock/skills/plugin marketplace add mattpocock/skillsSkills install per repository, not per chapter — the CLI has no documented per-skill form, so we do not print one.
Generate an interactive bash wizard that walks a human through steps only they can perform. Use when provisioning infrastructure, setting up credentials or CI secrets, walking an unfamiliar third-party dashboard, or running a one-off migration or cutover. Don't invoke this for steps the agent can perform itself.
The verbatim description from this skill’s front matter — the string an agent matches on to decide whether to load it.
main, last pushed 7 August 2026.SKILL.md, not by matching a directory convention. 4 distinct layouts observed: skills/engineering/*/SKILL.md, skills/in-progress/*/SKILL.md, skills/misc/*/SKILL.md, skills/productivity/*/SKILL.md.h1 and no skipped levels:.claude-plugin/marketplace.json by Matt Pocock, declaring 1 plugin. It is read for editorial metadata only — never as the skill index, which is always the repository tree./mattpocock/skills.md, and each chapter at its own .md URL.2 files · 8 KB
Everything this skill ships beside its prose. All of it is set here, as subchapters of chapter 18.
Everything else published alongside the skill.