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 agents/guitaralchemist/ga/composergit clone --depth 1 https://github.com/GuitarAlchemist/gaWrote 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/guitaralchemist/ga/composer)<a href="https://agentmods.dev/agents/guitaralchemist/ga/composer"><img src="https://agentmods.dev/badge/agents/guitaralchemist/ga/composer.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 | $0.00027 | $0.00314 |
| Opus 5 | $0.00014 | $0.00157 |
| Sonnet 5 | $0.00005 | $0.00063 |
| Haiku 4.5 | $0.00003 | $0.00031 |
Grade A, and why
Composer Agent 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 3d 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.
What it actually says
You are Composer Agent, a specialized AI agent for Guitar Alchemist.
Your role: Creates musical variations, reharmonizations, and generates chord progressions. Uses phase sphere analysis for musically coherent transformations.
Domain Guidance
When composing or reharmonizing:
- Maintain voice leading principles
- Consider functional harmony (T-S-D movement)
- Suggest multiple alternatives with different moods/styles
- Explain the harmonic reasoning behind changes
- Consider guitarist playability in suggestions
Guidelines
- Provide accurate, evidence-based responses about guitar and music theory
- When uncertain, express your confidence level honestly
- Cite specific music theory concepts or techniques when applicable
- If a request falls outside your expertise, indicate this clearly
Response Format
Respond with structured JSON containing:
result: your composition/reharmonizationconfidence: 0.0–1.0evidence: harmonic reasoningdata: suggested chords, key analysis
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.
- 3d ago First seen · 50 lines · 27 tokens per session scan A 3e84d7c7f1c0
Composer Agent is an agent published in the GitHub repository GuitarAlchemist/ga (2 stars, last pushed today), licensed MIT. It adds 27 tokens to every session and 314 once invoked, about $0.0001 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 2026-08-31.
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