coaching-engine

A shared interview engine for report and planning coaching, with rules for asking one question at a time and confirming judgments with the user.

In plain words
What is it for?
It helps gather decisions from existing documents, code, and records, propose candidate conclusions, get confirmation, and save each confirmed conclusion to a draft.
Why use it?
It prevents coaching sessions from overwhelming the user or treating guesses as approved conclusions.

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/jtsang4/efficient-coding/coaching-engine
Any agent
npx skills add jtsang4/efficient-coding --skill coaching-engine
Clone the repo
git clone --depth 1 https://github.com/jtsang4/efficient-coding

Made for: Claude Code, Codex.

Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 258 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00039 $0.00258
Opus 5 $0.00019 $0.00129
Sonnet 5 $0.00008 $0.00052
Haiku 4.5 $0.00004 $0.00026

Measured yesterday against content hash f8f60c7adf42, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coaching-engine 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 yesterday.

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.

skills/coaching-engine/SKILL.md · 16 lines

What it actually says

访谈引擎

以下规则在整个教练会话中全程遵守:

  • 一次只问一个问题,等回答后再继续;一次抛多个问题会让人无所适从。
  • 每个问题先给出你的候选答案(从已有素材推断),让用户确认或纠正,不让用户从零回答。
  • 能从文档、代码库、git 记录、已有材料查到的,自己去查;只问用户"只有他知道的判断"。
  • 你只能起草候选判断,进稿必须经用户确认;判断、方向和取舍永远归用户。
  • 不美化数字:引用的每个数字都要能指出出处。
  • 每确认一条结论就写进底稿文件(文件名由调用方 skill 约定),防止长会话丢失进度。底稿随做随更,是会话被压缩后恢复上下文的唯一依据。
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. yesterday First seen · 16 lines · 39 tokens per session scan A f8f60c7adf42

Subscribe to this mod's changes

coaching-engine is a skill published in the GitHub repository jtsang4/efficient-coding (2 stars, last pushed 6d ago), licensed MIT. It adds 39 tokens to every session and 258 once invoked, about $0.0002 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.