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 skills/apiliumcode/mayros/model-advisornpx skills add ApiliumCode/mayros --skill model-advisorgit clone --depth 1 https://github.com/ApiliumCode/mayrosWhat 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 | $0.00018 | $0.00330 |
| Opus 5 | $0.00009 | $0.00165 |
| Sonnet 5 | $0.00004 | $0.00066 |
| Haiku 4.5 | $0.00002 | $0.00033 |
Grade A, and why
model-advisor 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 2d 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
model-advisor
Recommends the optimal Claude model based on task requirements, complexity analysis, and cost efficiency.
When to Use
Use when choosing between Claude models for a specific task, when optimizing API costs, or when you need guidance on which model best fits a workload profile.
Supported Models
| Model | Input | Output | Best For |
|---|---|---|---|
| Opus 4.6 | $15/MTok | $75/MTok | Complex reasoning, research, multi-step analysis, code architecture, creative writing |
| Sonnet 4.6 | $3/MTok | $15/MTok | Coding, general tasks, data analysis, moderate complexity |
| Haiku 4.5 | $0.80/MTok | $4/MTok | Classification, extraction, simple Q&A, high volume, low latency |
Instructions
- Recall any previous model recommendations with
skill_memory_context - Analyze the task description from query results for complexity indicators
- Match task keywords against model strengths to determine the best fit
- Return the recommended model with rationale and cost comparison
What ships with it
9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 38 lines · 18 tokens per session scan A c30fe86f93b3
model-advisor is a skill published in the GitHub repository ApiliumCode/mayros (12 stars, last pushed 1mo ago), licensed MIT. It adds 18 tokens to every session and 330 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 2026-08-30.
Other skills, from other repositories
campaign
Start, drive, monitor, and stop an Autonomous Improvement Campaign — a durable, repeatable wrapper around the dev-improve loop.
dev-loop
Pull the next task from a platform Ralph Loop queue (via the devloop MCP bridge) and drive it to a verified, committed, reported outcome. One task per invocation — this is a Ralph-pattern loop body designed to be driven repeatedly by /loop /dev-loop.
improve
Discover, offer, and triage code-quality improvements for the dev-improve loop.
gen-tests
Generate RSpec request specs for untested controllers and service specs for untested services.
verify
Run targeted verification based on what changed since last commit.
audit
Run comprehensive codebase quality and pattern compliance audit.