Fabric Skill - Native Pattern Execution

The Key Insight

Fabric patterns are just markdown prompts. Instead of spawning fabric -p pattern_name for every task, Claude Code reads and applies patterns directly from ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/. This gives you:

• Your Claude subscription's full power - Opus/Sonnet intelligence, not Fabric's default model
• Full conversation context - Patterns work with your entire session
• No CLI overhead - Faster execution, no process spawning
• Same 248 patterns - All the patterns you know, just applied natively

When to Use Native Patterns (Default)

For any pattern-based processing:

1. Read ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/{pattern_name}/system.md
2. Apply the pattern instructions directly to the content
3. Return results without external CLI calls

Examples:

User: "Extract wisdom from this transcript"
→ Read ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/extract_wisdom/system.md
→ Apply pattern to content
→ Return structured output (IDEAS, INSIGHTS, QUOTES, etc.)

User: "Create a threat model for this API"
→ Read ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/create_threat_model/system.md
→ Apply pattern to the API description
→ Return threat model

User: "Summarize this article"
→ Read ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/summarize/system.md
→ Apply pattern to article
→ Return summary

When to Still Use Fabric CLI

Only use the fabric command for operations that require external services:

Operation	Command	Why CLI Needed
YouTube transcripts	fabric -y "URL"	Downloads video, extracts transcript
Update patterns	fabric -U	Pulls from GitHub
List patterns	fabric -l	Quick reference

For everything else, use native patterns.

Pattern Categories (248 Total)

Threat Modeling & Security

• create_threat_model - General threat modeling
• create_stride_threat_model - STRIDE methodology
• create_threat_scenarios - Threat scenario generation
• analyze_threat_report - Threat report analysis
• create_sigma_rules - SIGMA detection rules
• write_nuclei_template_rule - Nuclei scanner templates
• write_semgrep_rule - Semgrep static analysis rules

Summarization

• summarize - General summarization
• create_5_sentence_summary - Ultra-concise summary
• summarize_paper - Academic paper summary
• summarize_meeting - Meeting notes
• youtube_summary - Video summary

Wisdom Extraction

• extract_wisdom - General wisdom extraction
• extract_insights - Key insights
• extract_main_idea - Core message
• extract_recommendations - Actionable recommendations
• extract_alpha - High-value insights

Analysis

• analyze_claims - Claim verification
• analyze_code - Code analysis
• analyze_malware - Malware analysis
• analyze_paper - Academic paper analysis
• analyze_debate - Debate analysis

Content Creation

• create_prd - Product Requirements Document
• create_design_document - Design documentation
• create_mermaid_visualization - Mermaid diagrams
• write_essay - Essay writing
• create_report_finding - Security findings

Improvement

• improve_writing - Writing enhancement
• improve_prompt - Prompt engineering
• review_code - Code review
• humanize - Humanize AI text

Updating Patterns

Run the update script to sync latest patterns from upstream:

./tools/update-patterns.sh

This will:

1. Run fabric -U to fetch upstream updates
2. Sync patterns to ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/

Requirements: fabric CLI must be installed (go install github.com/danielmiessler/fabric@latest)

Pattern Structure

Each pattern directory contains:

• system.md - The main prompt/instructions (this is what gets applied)
• README.md - Documentation (optional)
• user.md - Example user input (optional)

Why Native > CLI

Aspect	Native Patterns	fabric CLI
Model	Your subscription (Opus/Sonnet)	Fabric's configured model
Context	Full conversation history	Just the input
Speed	Instant (no process spawn)	~1-2s CLI overhead
Integration	Seamless with Claude Code	External tool call

The patterns are identical. The difference is execution context and model power.

Full Pattern List

See all available patterns:

ls ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/

Or browse: ${CLAUDE_PLUGIN_ROOT}/skills/fabric/tools/patterns/{pattern_name}/system.md