using-spectacular

using-spectacular is a skill for Claude Code, Codex from arittr/spectacular. It costs 41 tokens per session (1,034 once invoked), scanned A, original, MIT.

Project instructions for Spectacular, a workflow that organizes feature development around written specifications. It requires checking project rules before implementing or refactoring code.

In plain words
What is it for?
Starting feature or refactoring work, creating specifications and plans, and following the Spectacular command sequence.
Why use it?
It prevents feature work from skipping required specifications, plans, or project constitution rules.

Skill for Claude CodeCodex

Part of the spectacular plugin — 14 skills, 5 commands, 1 hook shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/arittr/spectacular/using-spectacular
Any agent
npx skills add arittr/spectacular --skill using-spectacular
Clone the repo
git clone --depth 1 https://github.com/arittr/spectacular

Made for: Claude Code, Codex.

Or install spectacular, the plugin that ships this one along with the rest of its 14 skills, 5 commands, 1 hook.

Wrote 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.

agentmods badge for using-spectacular

README.md
[![agentmods](https://agentmods.dev/badge/skills/arittr/spectacular/using-spectacular.svg)](https://agentmods.dev/skills/arittr/spectacular/using-spectacular)
Your own site
<a href="https://agentmods.dev/skills/arittr/spectacular/using-spectacular"><img src="https://agentmods.dev/badge/skills/arittr/spectacular/using-spectacular.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,034 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00041 $0.01034
Opus 5 $0.00020 $0.00517
Sonnet 5 $0.00008 $0.00207
Haiku 4.5 $0.00004 $0.00103

Measured 5d ago against content hash cab7ebf18b11, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

using-spectacular 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 5d 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.

skills/using-spectacular/SKILL.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<EXTREMELY_IMPORTANT> You have spectacular.

The content below is your introduction to using spectacular:


Using Spectacular

Spectacular extends superpowers with spec-anchored development workflows. Before responding to user requests for features or refactors, you MUST check if spectacular workflows apply.

MANDATORY FIRST RESPONSE PROTOCOL

Before responding to ANY user message about features, refactors, or implementations:

  1. ☐ Does request involve implementing/refactoring features?
  2. ☐ Is there a docs/constitutions/current/ directory in this project?
  3. ☐ If yes → Use spectacular workflow (spec → plan → execute)
  4. ☐ If no constitution → Ask if user wants to use spectacular

Responding to feature requests WITHOUT this check = automatic failure.

Core Spectacular Workflow

User request → /spectacular:spec → /spectacular:plan → /spectacular:execute

Each command has a specific purpose:

  1. /spectacular:spec - Generate feature specification

    • When: User describes a feature to implement or refactor
    • Output: specs/{runId}-{feature-slug}/spec.md
    • Includes: Requirements, architecture, acceptance criteria
    • References: Constitution rules (doesn't duplicate them)
  2. /spectacular:plan - Decompose spec into execution plan

    • When: After spec is reviewed and approved
    • Input: Path to spec.md
    • Output: specs/{runId}-{feature-slug}/plan.md
    • Analyzes: Task dependencies, file overlaps
    • Generates: Sequential/parallel phases with time estimates
  3. /spectacular:execute - Execute plan with parallel orchestration

    • When: After plan is reviewed and approved
    • Input: Path to plan.md
    • Creates: Worktrees, spawns subagents, stacks branches
    • Quality gates: Tests/lint after each task, code review after each phase

Constitutions: Architectural Truth

If docs/constitutions/current/ exists, it contains immutable architectural rules:

  • architecture.md - Layer boundaries, project structure
  • patterns.md - Mandatory patterns (e.g., "use Zod for validation")
  • tech-stack.md - Approved libraries and versions
  • testing.md - Testing requirements

Read the full file on GitHub · 113 lines

Changes

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.

  1. 5d ago First seen · 113 lines · 41 tokens per session scan A cab7ebf18b11

Subscribe to this mod's changes

using-spectacular is a skill published in the GitHub repository arittr/spectacular (20 stars, last pushed 7mo ago), licensed MIT. It adds 41 tokens to every session and 1,034 once invoked, about $0.0002 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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