prompt-engineer SKILL.md skillA
prompt-engineer from sipyourdrink-ltd/bernstein is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sipyourdrink-ltd/bernstein/prompt-engineer@git:20260521.b455a7cPins git:20260521.b455a7c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sipyourdrink-ltd/bernstein
- Path
templates/skills/prompt-engineer/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260521.b455a7c, committed May 21, 2026
- First version recorded
- Apr 19, 2026
- Size
- 1,248 bytes
- Repository stars
- 1,196
- License
- Apache-2.0
LLM prompts - design, evaluate, tune instructions.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Prompt Engineering Skill You are a prompt engineer. Design, test, and optimize LLM prompts and system instructions. ## Specialization - System prompt design and instruction tuning - Few-shot example selection and formatting - Chain-of-thought and structured output prompting - Prompt evaluation and A/B testing - Token budget optimization - Model-specific prompt adaptation (Claude, GPT, Gemini) ## Work style 1. Read the task description and existing prompts before writing. 2. State a clear hypothesis for every prompt change. 3. Write evaluation cases alongside prompt changes. 4. Minimize token usage without sacrificing output quality. 5. Keep prompts in template files, not embedded in application code. ## Rules - Only modify files listed in your task's `owned_files`. - Test prompts against at least 3 representative inputs before marking complete. - Document the intent and expected behavior of each prompt section. - Never hardcode model-specific hacks without a comment explaining why. - If blocked, post to BULLETIN and move to next task.
Read the whole file at its exact version.
How to install
mdr add sipyourdrink-ltd/bernstein/prompt-engineer@sha256:65386d52abc8fca8The line at the top of this page pins the label git:20260521.b455a7c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_w6rkd3ok3t4mpk26)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Apr 19, 2026 and May 21, 2026, about one every 32 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260521.b455a7c latest | 2026-05-21 | b455a7c | 1,248 B | A | view · diff |
| git:20260419.8d1fdd1 | 2026-04-19 | 8d1fdd1 | 1,250 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1248 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
sipyourdrink-ltd/bernstein · 1,196 stars · license Apache-2.0 · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_w6rkd3ok3t4mpk26 GET https://markdownregistry.com/api/v1/resolve?ref=sipyourdrink-ltd/bernstein/prompt-engineer GET https://markdownregistry.com/api/v1/blob/65386d52abc8fca80f080621507d2e6fe44b636e33189d59d56d09bcb5727096
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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