Agent skill · Audited from source

Prompt Engineer

skill · sipyourdrink-ltd/bernsteinApache-2.0 licenceAudited 14 Oct 2026 · source 6ba64a7d2489

★ 1,237pushed today
✓SAFEGrade B · 89/100 · 14 Oct 2026 · 6ba64a7
1,237repo stars · whole sipyourdrink-ltd/bernstein

Is it safe? Yes — SAFE, grade B (89/100). We read this skill's source at commit 6ba64a7d2489 and found no filesystem, network or shell access and no hard-coded secrets. What it does: LLM prompts - design, evaluate, tune instructions.

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Cite this page

ModelsAtlas. “Prompt Engineer (sipyourdrink-ltd/bernstein)”. Retrieved 14 Oct 2026. https://modelsatlas.com/skills/sipyourdrink-ltd/prompt-engineer

2 skills are called “Prompt Engineer”. You are viewing sipyourdrink-ltd/bernstein.

Trust audit

Audit 0.4.1 · source read 14 Oct 2026

Trust score89/100✓SAFE B
0 critical0 high0 medium0 low0 info

SAFE means nothing in the source contradicts what the skill says it does. Grade B is shared by 13,985 of 14,816 audited skills.

What the source does

  • FilesystemNone observedNo reads or writes in the source
  • NetworkNone observedNo outbound calls in the source
  • ShellNone observedNo commands run in the source
  • DependenciesPinnedNothing floats
  • SecretsNone foundNo keys in source

Five audit layers

LayerWhat we checkResultFindings
L0 ProvenanceRepo owner, licence, archive status, activityPASS0
L1 Static sourceSecrets, path traversal, supply chain, hidden codePASS0
L2 InstructionsPrompt injection, authority framing, hidden directivesPASS0
L3 InventoryThe files and declarations match the sourcePASS0
L4 SandboxRun in isolation and watch behaviourSKIPPED why0

Gates applied: no behavioural pass.

Findings (0)

No findings at any severity. We re-audit when the source changes.

Audit 0.4.1 · source sha 6ba64a7d2489 · 14 Oct 2026Report an issue or request a re-scan

Provenance

Who published it, and what the verdict is pinned to

  • Publishersipyourdrink-ltd GitHub organizationOwner of the repository this skill is read from
  • Source foldersipyourdrink-ltd/bernstein/templates/skills/prompt-engineerThe exact folder we audited
  • LicenceApache-2.0As the repository states it
  • Commit pinned for this verdict6ba64a7d2489A new audit runs when the source changes
  • Repository statusNot archivedPushed today
  • Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

What it tells the agent

Full source on GitHub ↗

Its description: LLM prompts - design, evaluate, tune instructions.

---
name: prompt-engineer
description: LLM prompts - design, evaluate, tune instructions.
trigger_keywords:
  - prompt
  - system-prompt
  - few-shot
  - chain-of-thought
  - evaluation
---

# 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.

Excerpt, first 1,247 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

Install

Pinned to the audited commit 6ba64a7

Download folder ↗
git clone https://github.com/sipyourdrink-ltd/bernstein
git -C bernstein checkout 6ba64a7d2489

The author documents no install command, so this uses the repository directly. Our verdict covers commit 6ba64a7d2489 only.

Works in

The author has not said which agents this skill supports, and we have not tested it in any.

Audit history

Every audit, every source change

  1. ✓SAFE B 89 / 100

    first audit · source 6ba64a7d2489

README badge

For maintainers · shows the latest audit

ModelsAtlas: SAFE BMODELSATLASSAFE · B
[![ModelsAtlas: SAFE B](https://modelsatlas.com/skills/sipyourdrink-ltd/prompt-engineer/badge.svg)](https://modelsatlas.com/skills/sipyourdrink-ltd/prompt-engineer/)

The badge shows our verdict and grade for this skill, and links back to this page. It changes when the audit does.

Similar skills

Add this badge to your README

[![ModelsAtlas: SAFE B](https://modelsatlas.com/skills/sipyourdrink-ltd/prompt-engineer/badge.svg)](https://modelsatlas.com/skills/sipyourdrink-ltd/prompt-engineer/)

Questions about Prompt Engineer

What does the Prompt Engineer skill do?
The open-source governance layer for AI agents: write the rules declaratively, Bernstein enforces them and produces the verifiable, replayable record. Free, Apache-2.0. https://bernstein.run
Is Prompt Engineer safe to install?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean skill reads B.
What can Prompt Engineer access on my machine?
The audit observed no filesystem, network or shell use at all in its source.
How current is this page?
The grade is for one exact copy of the source (6ba64a7d2489), read on 2026-10-14. The repository is watched, and a new audit runs when it changes — this is the first audit.

Sources

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Opens with this page as the source. We add nothing else to the prompt.