Prompt Creation

Skill for creating high-performance prompts following 2025 best practices and Anthropic conventions.

Documentation

• techniques.md – Structuring techniques (CoT, Few-shot, etc.)
• templates.md – Reusable templates

Anthropic Official Structure (9 Elements)

Each system prompt should cover these 9 aspects:

1. Task Context

# Task Context
You are an expert [ROLE] specializing in [DOMAIN].
Your goal is to [PRIMARY_OBJECTIVE].

2. Tone Context

# Tone
- Tone: [formal/casual/technical/friendly]
- Length: [concise/detailed/adaptive]
- Format: [prose/lists/tables/mixed]

3. Task Description + Rules

# Task Description
Here are important rules:
- Always [MANDATORY_BEHAVIOR]
- Never [FORBIDDEN_BEHAVIOR]
- If [CONDITION] then [ACTION]

If unsure, say "I don't have enough information to answer."

4. Examples (Few-shot)

# Examples

<example>
Input: [STANDARD_CASE_INPUT]
Output: [EXPECTED_OUTPUT]
</example>

<example>
Input: [EDGE_CASE_INPUT]
Output: [EXPECTED_OUTPUT]
</example>

5. Input Data

# Input Data
<document>
[USER_PROVIDED_CONTENT]
</document>

6. Immediate Task

# Immediate Task
Now, [SPECIFIC_ACTION] the above [document/code/data].

7. Precognition (Scratchpad)

# Precognition
First, in <scratchpad> tags, analyze the key points.
Then provide your final answer in <answer> tags.

8. Output Formatting

# Output Format

## Analysis
[Problem understanding]

## Solution
[Main response]

## Recommendations
[Additional suggestions]

9. Prefill (Assistant Turn)

# Prefill
<scratchpad>

Emphasis Techniques

In order of increasing effectiveness:

Creation Workflow

1. DEFINE the objective (1 sentence)
   ↓
2. IDENTIFY target audience
   ↓
3. LIST constraints
   ↓
4. CHOOSE techniques (CoT? Few-shot?)
   ↓
5. WRITE with 9-element structure
   ↓
6. ADD guardrails
   ↓
7. TEST mentally (edge cases)
   ↓
8. ITERATE if necessary

Forbidden

• Never create prompts without clear objective
• Never write ambiguous instructions
• Never forget error cases
• Never ignore target model context