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prompt-engineerby JeffallanDevelopmentGitHub stars: 12.1k

Prompt Engineer skill: what it does and how to install it

Designs and evaluates LLM prompts, refining instructions, examples and output schemas against test cases to improve reliability and efficiency.

Summary generated from the skill's documentation.

Warning. A security audit flagged this skill with a critical risk warning. Read its SKILL.md and scripts before you install it.

Install

$ npx skills add Jeffallan/claude-skills --skill prompt-engineer

Run it in a terminal. If your agent is already running, start a new session so it picks the skill up.

About this skill

What it does. Defines requirements and success criteria, drafts a prompt pattern, tests it on varied cases, then iterates based on failures and token costs. It can produce prompt templates, structured output schemas, evaluation tests and deployment notes.

When to use it. For new LLM prompts, improving existing ones, debugging inconsistent outputs or moving prompts between models. It also applies to system prompts, few-shot examples and prompt evaluation frameworks.

History

Repo stars

12.1k+332 since 5 Oct 2026

Stars are counted for the whole repository, which holds 51 skills.

Show as a table
Repo stars by day
DateRepo stars
26 Oct 202612,068
25 Oct 202612,050
24 Oct 202612,032
23 Oct 202612,017
22 Oct 202611,999
21 Oct 202611,974
20 Oct 202611,948
19 Oct 202611,940
18 Oct 202611,921
17 Oct 202611,909
16 Oct 202611,895
15 Oct 202611,881
14 Oct 202611,865
13 Oct 202611,850
12 Oct 202611,838
11 Oct 202611,819
10 Oct 202611,806
9 Oct 202611,791
8 Oct 202611,776
7 Oct 202611,756
6 Oct 202611,746
5 Oct 202611,736

Installs

5.6k+131 since 19 Oct 2026

Installs via skills.sh

Show as a table
Installs by day
DateInstalls
26 Oct 20265,613
25 Oct 20265,601
24 Oct 20265,587
23 Oct 20265,571
22 Oct 20265,543
21 Oct 20265,514
20 Oct 20265,499
19 Oct 20265,482

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