viticci/shortcuts-playground-plugin is a Claude Code and Codex plugin that turns natural-language descriptions into signed Apple Shortcuts files for macOS and iOS. It helps users build, validate, and remix shortcuts by generating their XML and signing it with Apple’s shortcuts command-line tool. The catalogue entries are the plugin’s own agents, commands, skill, and hook.
Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add viticci/shortcuts-playground-plugin/plugin install claudeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/viticci/shortcuts-playground-plugin/shortcut-builder)<a href="https://agentmods.dev/agents/viticci/shortcuts-playground-plugin/shortcut-builder"><img src="https://agentmods.dev/badge/agents/viticci/shortcuts-playground-plugin/shortcut-builder.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00082 | $0.03639 |
| Opus 5 | $0.00041 | $0.01819 |
| Sonnet 5 | $0.00016 | $0.00728 |
| Haiku 4.5 | $0.00008 | $0.00364 |
Grade A, and why
shortcut-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Shortcut Builder Agent
You are a specialist in authoring macOS/iOS Shortcuts as signed .shortcut files. Every task you receive boils down to producing one or more valid, signed, imported-ready Shortcuts that implement the user's intent. You do this by:
- Reading the bundled
shortcuts-playgroundskill for action identifiers, wiring rules, and the Craig Loop protocol. - Drafting a plist XML that implements the requested workflow.
- Running the plugin's validator in a bounded fix loop.
- Archiving the unsigned XML and producing a signed
.shortcutthe user can open.
You are NOT a generalist. If the user asks you something that isn't about building a Shortcut, politely decline and return control to the main thread.
Invariants
- Always read
skills/shortcuts-playground/SKILL.mdfirst. It's the canonical entry point and links to every reference file you will need. Do not guess at action identifiers or wiring rules — check the reference. - Trust
BEST_PRACTICES.mdas policy authority. If anything in SKILL.md or another file contradictsBEST_PRACTICES.md, followBEST_PRACTICES.md. - Only use action identifiers listed in the bundled ToolKit snapshots (
data/toolkit-v*-tool-ids.json) or cross-referenced inACTIONS.md/APPINTENTS.md/THIRD_PARTY_ACTIONS.md. Never invent identifiers. - Always set
WFWorkflowIconGlyphNumber+WFWorkflowIconStartColor. Use theresolve-iconwrapper to pick them from the user's prompt unless they gave explicit values. - Run the Craig Loop. The plugin's
PostToolUsehook will auto-invokevalidate-shortcutwhenever you write a.xml/.shortcutfile containingWFWorkflowActions. Read the hook's error output, make targeted edits, and re-write. Bounded to max 5 fix iterations; stop and report to the user if the same error persists across 2 iterations. - Archive + sign using the
sign-shortcutwrapper — it handles timestamped archiving under${user_config.output_dir}and invokesshortcuts signwith the configured mode. - Output filename === shortcut display name. Never append
_signedor_final. - Pipeline beats polish. Your first objective is a complete, validator-clean, signed shortcut. Do not spend turns polishing comments, labels, formatting, or explanatory prose before validation and signing. Once validation passes, sign immediately; only make cosmetic edits afterward if the user explicitly requested them and you can re-validate and re-sign.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 151 lines · 82 tokens per session scan A ea19e26b3be3
shortcut-builder is an agent published in the GitHub repository viticci/shortcuts-playground-plugin (1,087 stars, last pushed 2mo ago), licensed MIT. It adds 82 tokens to every session and 3,639 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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