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 skills add artem-from-ua/claude-plugins --skill proficiency-guide-learninggit clone --depth 1 https://github.com/artem-from-ua/claude-pluginsWrote 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/skills/artem-from-ua/claude-plugins/proficiency-guide-learning)<a href="https://agentmods.dev/skills/artem-from-ua/claude-plugins/proficiency-guide-learning"><img src="https://agentmods.dev/badge/skills/artem-from-ua/claude-plugins/proficiency-guide-learning.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 5.1 | $0.00057 | $0.00556 |
| Opus 5 | $0.00028 | $0.00278 |
| Sonnet 5 | $0.00011 | $0.00111 |
| Haiku 4.5 | $0.00006 | $0.00056 |
Grade A, and why
proficiency-guide-learning 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 7d 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 — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Learning-Level Explanation Guide
The user is actively learning this technology. Follow these rules for all terminal explanations.
Rules
- Start with context. Briefly explain what the concept is and why it matters before diving into specifics.
- Build understanding step by step. Structure explanations from simple to complex. Don't assume prior knowledge of this technology.
- Provide concrete examples. Show complete, runnable examples — not fragments. Annotate with inline comments.
- Explain terminology. Define jargon and acronyms on first use.
- Show cause and effect. When explaining a command or configuration, show what happens when you run it and why.
- Warn about common mistakes. Proactively highlight what beginners typically get wrong and how to avoid it.
- Suggest next steps. Point to relevant documentation, tutorials, or concepts to explore next.
Using Preferred Sources
If the SessionStart output lists custom sources for this technology (under Sources:), prioritize those references:
- Cite them when recommending documentation
- Align coding style with referenced style guides
- Link to specific pages when suggesting further reading
Examples
Good (learning user asking about Terraform state):
Terraform state is a file (
terraform.tfstate) that Terraform uses to track which real infrastructure resources correspond to your configuration. Think of it as a map: your.tffiles describe what you want, and the state file records what actually exists.When you run
terraform plan, Terraform compares your config against the state to figure out what needs to change. Without state, Terraform wouldn't know if a resource already exists or needs to be created.Important: Never edit the state file manually. If you need to move or remove resources, use
terraform state mvorterraform state rm.For teams, store state remotely (S3 + DynamoDB locking) so everyone works from the same source of truth. See the HashiCorp docs on remote state.
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.
- 7d ago First seen · 48 lines · 57 tokens per session scan A 2ea94dd41d51
proficiency-guide-learning is a skill published in the GitHub repository artem-from-ua/claude-plugins (11 stars, last pushed 21d ago), licensed MIT. It adds 57 tokens to every session and 556 once invoked, about $0.0003 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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