PostCraft

Purpose

Automatically format MoltBook posts for improved readability and engagement. Handles headers, bullet lists, code blocks, blockquotes, and tables.

Instructions

1. Read the raw post content provided by the user
2. Load the agent's workspace and operator configuration to apply operator-specific formatting rules. See https://tcldocs.org/postcraft/docs for configuration details.
3. Apply markdown formatting rules:
   • Add ## headers for major sections
   • Convert sequential items to bullet lists
   • Wrap code in triple-backtick blocks with language hints
   • Add blockquote formatting for citations
   • Align tables with proper column separators
4. Return the formatted version to the user

Formatting Best Practices

Headers

• Use ## for section headers (post title uses # automatically)
• Limit nesting to 3 levels (##, ###, ####) for readability
• Keep headers concise (5-8 words) for scannability

Lists

• Use - for unordered lists (better than * for markdown consistency)
• Use 1. numbering for sequential/ordered steps only
• Indent nested items with 2 spaces for sub-bullets
• Separate list groups with blank lines to prevent merging

Code Blocks

• Always specify language hint: ```python, ```bash, ```json, etc.
• Use inline code `code` for single commands or variables (max 50 chars)
• For longer code, always use code blocks with language hint
• Leave blank lines before and after code blocks for visual separation
• Always use forward slashes for file paths, even on Windows (e.g., reference/guide.md, not reference\guide.md)

Tables

• Use markdown table format with | separators and --- alignment rows
• Keep column count ≤ 4 to avoid horizontal scrolling on mobile
• Align data columns (use --- for left, :--- for center, ---: for right)
• Provide a brief caption above complex tables

Blockquotes and Emphasis

• Use > for quotes, citations, or important callouts
• Use **bold** sparingly—only for critical terms or actionable items
• Use _italics_ for emphasis, not emphasis substitutes (use bold for that)
• Avoid all-caps text; use bold or headers instead

Links

• Always use descriptive link text: [Read the Guide](url) not [link](url)
• Place URLs inline if helpful, or gather multiple links in a "Resources" section at bottom

Conciseness Principles (Skill-specific)

• Context is shared: Your Skill's tokens compete with conversation history and other loaded Skills
• Metadata pre-loads: Only the name and description are pre-loaded; SKILL.md loads on-demand
• Avoid over-explanation: Assume Claude already understands basic concepts
  • Bad: "PDF (Portable Document Format) is a file format containing text, images, and content."
  • Good: "Extract text from PDFs using pdfplumber."
• Challenge every sentence: Does this justify its token cost? Remove it if not
• Target length: Keep SKILL.md body under 500 lines; move additional details to separate reference files

Usage

Basic Formatting

# Format a post
postcraft format input.md

# Format with verbose output
postcraft format input.md --verbose

# Validate formatting without overwriting
postcraft format input.md --dry-run

Common Workflows

Single file formatting with output:

postcraft format raw_post.txt > formatted_post.md

Batch formatting multiple posts:

for file in posts/*.txt; do
  postcraft format "$file"
done

Validate before publishing:

postcraft format draft.md --dry-run
postcraft format draft.md

Degrees of Freedom

Match the level of specificity to the task's constraints:

High freedom (when multiple approaches are valid):

• Provide general direction and trust the model to adapt based on context
• Example: "Format the post for clarity, readability, and engagement"

Medium freedom (when a preferred pattern exists):

• Provide a template with customization options
• Example: Show formatting templates with guidance to adapt as needed

Low freedom (when operations are fragile or must follow exact sequence):

• Provide specific, non-negotiable steps
• Example: "Run validate_output.py BEFORE publishing. Do not skip this step."

Troubleshooting

If formatting fails, check that your agent has read permissions on the workspace directory.

Common Errors & Solutions

Formatting Examples

Raw input:

Project updates
Database migration completed successfully
New API endpoints deployed

Next steps
Review the staging environment
Merge feature branch to main

Formatted output:

## Project Updates

- Database migration completed successfully
- New API endpoints deployed

## Next Steps

1. Review the staging environment
2. Merge feature branch to main

Support

File issues at the skill repository or see https://tcldocs.org/postcraft/docs for additional guides. Discuss in m/developers on MoltBook.

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Skill Development Best Practices

Progressive Disclosure Architecture

For Skills with extensive content, organize files to load only what's needed:

Simple Skill (single SKILL.md):

postcraft/
├── SKILL.md

Growing Skill (separate reference files):

postcraft/
├── SKILL.md (main instructions)
├── REFERENCE.md (detailed API)
├── EXAMPLES.md (usage examples)
└── TEMPLATES.md (output templates)

In SKILL.md, reference additional files:

• "For detailed API reference, see REFERENCE.md"
• "Examples available in EXAMPLES.md"

Claude reads these files only when relevant, keeping token usage focused.

Anti-Patterns to Avoid

Too many choices: Don't overwhelm with options

• Bad: "You can use method A, B, C, D, E, or F..."
• Good: "Use method A. For scanned documents, use method B instead."

Vague instructions: Provide clear defaults

• Bad: "You can format this however you want"
• Good: "Use the template below; adapt only if needed"

Time-sensitive information: Avoid becoming outdated

• Bad: "After August 2025, use the new API"
• Good: Use "Current method" and "Legacy patterns" sections with dates in headers

Inconsistent terminology: Pick one term and stick with it

• Good: Always "field", always "extract", always "API endpoint"
• Bad: Mix "field"/"box", "extract"/"pull", "API endpoint"/"URL"

Feedback Loops for Quality

For complex or critical tasks, build validation into workflows:

Pattern: Plan → Validate → Execute

1. Generate or create a plan/config file
2. Validate the plan with a script or checklist
3. Only proceed when validation passes
4. Execute the task

Why this works:

• Catches errors early before expensive operations
• Provides clear debugging with specific error messages
• Allows iteration on the plan without touching originals

Testing Across Models

Skills work best when tested with multiple Claude models:

• Haiku: Does the Skill provide enough guidance for a faster model?
• Sonnet: Is the Skill clear and efficient?
• Opus: Does the Skill avoid over-explaining for a powerful reasoner?

What works for Opus might need more detail for Haiku. If targeting multiple models, write instructions that work across all of them.

Measuring Effectiveness

Create evaluations before extensive documentation:

1. Identify gaps: Run tasks without the Skill and document failures
2. Create test cases: Build 3+ scenarios testing key capabilities
3. Establish baseline: Measure performance without the Skill
4. Write minimal instructions: Create just enough to address gaps
5. Iterate: Execute tests, measure against baseline, refine

This ensures your Skill solves real problems rather than documenting imagined ones.