GA Probe

GA Probe is a skill for Claude Code, Codex from GuitarAlchemist/ga. It costs 43 tokens per session (1,393 once invoked), scanned A, original, MIT.

A skill for testing a music-theory chatbot and its specialist agents. It can query agents, compare their answers, and inspect which agent handles a question.

In plain words
What is it for?
It is for checking routing, comparing TheoryAgent, TabAgent, and CriticAgent responses, and verifying deployed chatbot changes.
Why use it?
It helps reveal routing mistakes or incorrect chatbot behavior through repeatable tests.

Skill for Claude CodeCodex

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/guitaralchemist/ga/probe
Any agent
npx skills add GuitarAlchemist/ga --skill probe
Clone the repo
git clone --depth 1 https://github.com/GuitarAlchemist/ga

Made for: Claude Code, Codex.

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 GA Probe

README.md
[![agentmods](https://agentmods.dev/badge/skills/guitaralchemist/ga/probe.svg)](https://agentmods.dev/skills/guitaralchemist/ga/probe)
Your own site
<a href="https://agentmods.dev/skills/guitaralchemist/ga/probe"><img src="https://agentmods.dev/badge/skills/guitaralchemist/ga/probe.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,393 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00043 $0.01393
Opus 5 $0.00022 $0.00696
Sonnet 5 $0.00009 $0.00279
Haiku 4.5 $0.00004 $0.00139

Measured 5d ago against content hash c0589cef900d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

GA Probe scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sk -X POST https://localhost:7001/api/ga/eval \
.agent/skills/ga/probe/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/ga probe — GA Chatbot Probe

Use this sub-command when you need to test agent behaviour, compare routing decisions, or get music theory answers from the live GA chatbot (Ollama-backed, SemanticRouter-dispatched).

When to Use

  • Testing that SemanticRouter picks the right agent for a given query
  • Comparing how TheoryAgent vs CriticAgent answer the same question
  • Getting a real chatbot answer as context while writing code
  • Verifying a newly deployed agent change works end-to-end
  • Confirming orchestrator-level skills short-circuit routing (routingMethod: "orchestrator-skill")

Single Agent Query

curl -sk -X POST https://localhost:7001/api/ga/eval \
  -H "Content-Type: application/json" \
  -d "$(jq -n --arg q "What intervals make up a Cmaj7 chord?" \
       '{script: ("invoke \"agent.theoryAgent\" (Map.ofList [\"question\", box " + ($q | @json) + "])")}')"

Or in a GAL script:

invoke "agent.theoryAgent" (Map.ofList ["question", box "What intervals make up a Cmaj7 chord?"])

The SemanticRouter inside the GA API picks the best specialist (Theory / Tab / Critic / Composer) based on embedding similarity. The agent closure does not force a specific agent — routing still happens at the API level.

Fan-Out: Compare Multiple Agents

To send the same question to multiple agent closures in parallel and collect all answers:

invoke "agent.fanOut" (Map.ofList [
    "question",   box "Analyse the progression Am - F - C - G"
    "agentNames", box [| "agent.theoryAgent"; "agent.criticAgent" |]
])

Returns Map<string, string> — agent name → response. Display side-by-side.

Direct Chatbot Endpoint (no GAL)

For debugging routing metadata (agent selected, confidence, routing method):

curl -sk -X POST https://localhost:7001/api/chatbot/chat \
  -H "Content-Type: application/json" \
  -d '{"message": "Show me fingering for an open G chord", "useSemanticSearch": true}' \
  | python -m json.tool

Read the full file on GitHub · 148 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 · 148 lines · 43 tokens per session scan A c0589cef900d

Subscribe to this mod's changes

GA Probe is a skill published in the GitHub repository GuitarAlchemist/ga (2 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 1,393 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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