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.
npx agentmods add instructions/fabioc-aloha/spotify-skill/copilot-instructionsgit clone --depth 1 https://github.com/fabioc-aloha/spotify-skillWrote 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/instructions/fabioc-aloha/spotify-skill/copilot-instructions)<a href="https://agentmods.dev/instructions/fabioc-aloha/spotify-skill/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/fabioc-aloha/spotify-skill/copilot-instructions.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 | $0.09988 | $0.09988 |
| Opus 5 | $0.04994 | $0.04994 |
| Sonnet 5 | $0.01998 | $0.01998 |
| Haiku 4.5 | $0.00999 | $0.00999 |
Grade A, and why
spotify-skill copilot-instructions.md 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 4d 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 — 1,243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Instructions - Spotify Skill Project
Project Overview
This project is an example of Claude Desktop Skills - specifically demonstrating how to create production-ready skills that extend Claude's capabilities. The Spotify API Skill serves as a comprehensive reference implementation for building API integration skills.
What This Project Is
- Primary Purpose: Educational example and template for creating Claude Desktop Skills
- Secondary Purpose: Production-ready Spotify API integration skill
- Audience: Developers learning to create custom Claude skills
- Status: Complete, production-ready, fully documented
Project Type
This is a Complete Skill Development Toolkit that includes:
- A complete working skill (Spotify API integration)
- Automated development tools (init, validate, package) - NEW!
- Official specifications (Agent Skills Spec v1.0) - NEW!
- Comprehensive guides for creating any type of skill
- Interactive workbooks and templates
- Advanced patterns and examples
- Best practices and troubleshooting
What Are Claude Desktop Skills?
Definition
Skills are modular, self-contained packages that extend Claude's capabilities by providing:
- Specialized workflows for specific domains
- Tool integrations (APIs, file formats, services)
- Domain expertise and procedural knowledge
- Bundled resources (scripts, references, assets)
Official Documentation: For up-to-date information on creating custom skills, see:
Skill Architecture
skill-name/
├── SKILL.md # Required: Main documentation with YAML frontmatter
├── scripts/ # Optional: Executable Python/JS code
│ ├── main_script.py
│ └── helper_script.py
├── references/ # Optional: Reference documentation
│ ├── api_reference.md
│ └── authentication_guide.md
└── assets/ # Optional: Templates, images, etc.
└── template.docx
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.
- 4d ago First seen · 1,243 lines · 9,988 tokens per session scan A 92c4f8bc08ce
spotify-skill copilot-instructions.md is an instructions file published in the GitHub repository fabioc-aloha/spotify-skill (17 stars, last pushed 10mo ago), licensed Apache-2.0. It adds 9,988 tokens to every session, about $0.0499 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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