proficiency-guide-intermediate

proficiency-guide-intermediate is a skill for Claude Code, Codex from artem-from-ua/claude-plugins. It costs 55 tokens per session (414 once invoked), scanned A, original, MIT.

A writing guide for explaining intermediate-level technologies to someone who already knows the basics.

In plain words
What is it for?
Guiding nuanced technical explanations when the user asks about an intermediate technology.
Why use it?
It keeps explanations focused on gotchas, edge cases, performance effects, and common configuration mistakes instead of repeating introductions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Part of the technology-explainer plugin — 6 skills shipped together

Good fit Guiding nuanced technical explanations when the user asks about an intermediate technology.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/artem-from-ua/claude-plugins/proficiency-guide-intermediate
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.

Any agent
npx skills add artem-from-ua/claude-plugins --skill proficiency-guide-intermediate
Clone the repo
git clone --depth 1 https://github.com/artem-from-ua/claude-plugins

Made for: Claude Code, Codex.

Or install technology-explainer, the plugin that ships this one along with the rest of its 6 skills.

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 proficiency-guide-intermediate

README.md
[![agentmods](https://agentmods.dev/badge/skills/artem-from-ua/claude-plugins/proficiency-guide-intermediate.svg)](https://agentmods.dev/skills/artem-from-ua/claude-plugins/proficiency-guide-intermediate)
Your own site
<a href="https://agentmods.dev/skills/artem-from-ua/claude-plugins/proficiency-guide-intermediate"><img src="https://agentmods.dev/badge/skills/artem-from-ua/claude-plugins/proficiency-guide-intermediate.svg" alt="Measured on agentmods" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 414 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00055 $0.00414
Opus 5 $0.00028 $0.00207
Sonnet 5 $0.00011 $0.00083
Haiku 4.5 $0.00006 $0.00041

Measured 8d ago against content hash ca275038f03d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

proficiency-guide-intermediate 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 8d 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.

plugins/technology-explainer/skills/proficiency-guide-intermediate/SKILL.md · 34 lines

What it actually says

Intermediate-Level Explanation Guide

The user has working knowledge of this technology but may not know advanced patterns or common pitfalls. Follow these rules for all terminal explanations.

Rules

  1. Skip the basics. Don't explain what the technology is or how to get started.
  2. Focus on nuances. Highlight gotchas, edge cases, performance implications, and non-obvious behavior.
  3. Explain the "why." When suggesting an approach, briefly explain why it's preferred over alternatives.
  4. Mention pitfalls. Proactively warn about common mistakes or misconfigurations relevant to the topic.
  5. Use examples sparingly. One focused example is better than three basic ones. Show the interesting case, not the trivial one.
  6. Reference related concepts. Connect the answer to related tools or patterns the user might not have linked yet.

Examples

Good (intermediate asking about Docker volumes):

Use a named volume (docker volume create mydata) rather than a bind mount for database storage — bind mounts inherit host filesystem permissions which can cause permission denied on Linux. Named volumes are managed by Docker and portable across hosts. Note: named volumes persist even after docker rm, so clean up with docker volume prune when needed.

Bad (too basic for intermediate):

Docker volumes are a way to persist data generated by containers. There are three types of mounts: volumes, bind mounts, and tmpfs mounts. Volumes are stored in a part of the host filesystem managed by Docker...

Scope

These rules apply ONLY to conversational explanations in the terminal. Code comments, docstrings, and project documentation must follow project conventions regardless of proficiency level.

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. 8d ago First seen · 34 lines · 55 tokens per session scan A ca275038f03d

Subscribe to this mod's changes

proficiency-guide-intermediate is a skill published in the GitHub repository artem-from-ua/claude-plugins (11 stars, last pushed today), licensed MIT. It adds 55 tokens to every session and 414 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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