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name: ecir-report-analyzer description: Analyze completed ECIR (Engineering Change Impact Report) Excel files to extract insights, identify trends, and detect patterns across single or multiple reports. Use when the user asks to analyze ECIR reports, find trends in ECIRs, compare multiple ECIRs, identify cost variance patterns, or generate insights from completed ECIR Excel files. This skill works with the output files from the ECIR Advanced Tool.

ECIR Report Analyzer

Analyze completed ECIR Excel reports to extract insights, identify trends, and detect patterns.

When to Use This Skill

Use this skill when the user:

• Asks to analyze an ECIR report
• Wants to understand cost impacts from a completed ECIR
• Needs to compare multiple ECIRs to find trends
• Requests insights or patterns across engineering changes
• Wants to identify high-variance items or categories
• Asks for a summary of change types in an ECIR

Prerequisites

ECIR Excel files must be generated by the ECIR Advanced Tool and contain these sheets:

• Header (metadata and summary metrics)
• Summary (category-level rollup)
• Detail_All (item-by-item comparison)
• Detail_Changes (filtered changed items only)

Core Capabilities

1. Single ECIR Analysis

Analyze one ECIR report to extract:

• Header metrics: Cost impacts, change reasons, affected models
• Status distribution: Breakdown of Added/Deleted/Modified items
• Category impacts: Which categories drove cost variance
• Outliers: Items with unusually large variances
• Insights: Human-readable key findings

Script: scripts/analyze_ecir.py

2. Multi-ECIR Trend Analysis

Compare multiple ECIRs to identify:

• Cost variance trends: Mean/median/min/max across all reports
• Change reason frequency: Most common reasons for changes
• Aggregate status distribution: Overall pattern of change types
• Supplier changes: Track vendor transitions
• High-variance ECIRs: Reports exceeding variance thresholds
• Common patterns: Recurring change types and impacts

Script: scripts/compare_ecirs.py

Usage Instructions

Analyzing a Single ECIR

When user provides an ECIR Excel file:

1. Use the bash_tool to run analyze_ecir.py:

   python scripts/analyze_ecir.py path/to/ecir.xlsx
   

2. For JSON output (for programmatic use):

   python scripts/analyze_ecir.py path/to/ecir.xlsx --format json
   

3. To save analysis to file:

   python scripts/analyze_ecir.py path/to/ecir.xlsx --output analysis.txt
   

4. Parse the output and present key insights to the user in natural language

Comparing Multiple ECIRs

When user wants trend analysis:

1. Use the bash_tool to run compare_ecirs.py:

   python scripts/compare_ecirs.py ecir1.xlsx ecir2.xlsx ecir3.xlsx
   

2. For JSON output:

   python scripts/compare_ecirs.py *.xlsx --format json
   

3. To save comparison:

   python scripts/compare_ecirs.py *.xlsx --output trends.txt
   

4. Summarize trends and patterns for the user

Working with User-Uploaded ECIRs

When user uploads ECIR files:

1. The files will be in /mnt/user-data/uploads/
2. Use view tool to list available files
3. Run analysis scripts on the uploaded files
4. Present results in user-friendly format

Output Interpretation

Text Format Output

The text format provides a human-readable report with sections:

• Insights: Key findings with emoji indicators
• Cost Summary: Before/after costs and variances
• Change Distribution: Breakdown by status type
• Top Cost Impacts: Categories with largest variances

JSON Format Output

Use JSON format when you need to:

• Programmatically process results
• Extract specific metrics
• Combine with other data
• Generate custom visualizations

Access metrics via:

import json
data = json.loads(result)
variance = data['header_metrics']['direct_variance_dollars']

Analysis Reference

For detailed explanation of metrics and insights, read references/analysis_guide.md which covers:

• All metric definitions
• Insight trigger conditions
• Interpretation guidelines
• Warning signs vs healthy patterns
• Example workflows

Read this reference when:

• User asks what a specific metric means
• Need to explain an insight
• Want to understand threshold values
• Planning analysis workflows

Common Tasks

Task: "What are the key findings from this ECIR?"

1. Run analyze_ecir.py on the file
2. Extract the insights section
3. Present insights with explanations
4. Highlight any concerning variances

Task: "Compare these 5 ECIRs and tell me what patterns you see"

1. Run compare_ecirs.py on all files
2. Review trend statistics
3. Identify recurring patterns
4. Highlight high-variance ECIRs
5. Summarize findings

Task: "Which categories have the highest cost increases?"

1. Run analyze_ecir.py with JSON format
2. Parse category_impacts.top_cost_increases
3. Present top categories with specific dollar amounts
4. Explain percentages

Task: "Show me all ECIRs with variance over 5%"

1. Run compare_ecirs.py on all available ECIRs
2. Parse patterns.high_variance_ecirs
3. List ECIRs exceeding threshold
4. Provide context on each

Insight Generation

The analyzer generates automatic insights with emoji indicators:

• ⚠️ Major cost impact: Variance >5%
• ✓ Minor cost impact: Variance <5%
• 📝 High spec change rate: >30% Modified-Spec
• ➕ Scope increase: >20% Added items
• ➖ Scope reduction: >20% Deleted items
• 📊 Largest increase: Top category impact
• 🔍 Change reason: Why change occurred

Present these insights conversationally, explaining what they mean for the user.

Integration with ECIR Tool Workflow

This analyzer is designed to work with the ECIR Advanced Tool:

Standard workflow:

1. User runs ECIR tool to compare before/after BOMs
2. ECIR tool generates Excel report
3. User uploads Excel report for analysis
4. This skill extracts insights and patterns
5. User makes decisions based on analysis

Advanced workflow (future):

• Automatic triggering after ECIR generation
• Pattern library building from analysis
• Predictive cost impact modeling
• Integration with approval workflow

Error Handling

If analysis fails:

1. Check file is valid ECIR Excel output
2. Verify all required sheets exist (Header, Summary, Detail_All)
3. Confirm file isn't corrupted
4. Check pandas/openpyxl are available

Common errors:

• Missing sheets: File may not be from ECIR tool
• Parsing errors: Excel file may be corrupted
• Empty data: ECIR may have been generated incorrectly

Dependencies

The analysis scripts require:

• Python 3.9+
• pandas
• openpyxl (for Excel reading)

These should already be available if the ECIR tool is installed.

Examples

Example 1: Quick Analysis

User: "Analyze this ECIR report and tell me the key findings"

Response:

1. Run analyze_ecir.py
2. Present: "I've analyzed ECIR-2024-045. Key findings: ⚠️ Major cost impact with 7.3% increase ($12,456.78). 📝 High specification change rate: 42% of items had spec changes, indicating significant product substitutions. 📊 Largest cost increase in Glulams: $8,234.56 (18.7%). The change was due to Supplier_Change from Green Mountain to Pliris."

Example 2: Trend Analysis

User: "Compare all my ECIRs from last month and show me patterns"

Response:

1. Run compare_ecirs.py on all files
2. Present: "I analyzed 8 ECIRs from last month. Average cost variance was 4.2% ($8,932.14). Top change reason: Supplier_Change (5 ECIRs). The most common change type was Modified-Spec (38% of all changes). 3 ECIRs exceeded 5% variance threshold and need executive review. There's a pattern of Glulam category driving high variance across multiple reports."

Example 3: Category Deep Dive

User: "Which categories are causing the most cost increases?"

Response:

1. Run analyze_ecir.py with JSON output
2. Parse category data
3. Present: "Top 3 categories by cost increase: 1) Glulams: $8,234.56 (18.7%), 2) Hardware: $2,156.32 (5.3%), 3) Strapping: $1,432.11 (12.4%). Glulams show the largest absolute dollar increase, while Strapping has the highest percentage increase despite lower absolute value."

Best Practices

1. Always run analysis before interpreting: Don't guess at metrics, use the scripts
2. Provide context: Explain what metrics mean, not just values
3. Highlight concerning patterns: Draw user attention to high variances
4. Compare to baselines: Use trend analysis to show if current ECIR is typical
5. Suggest actions: Based on insights, recommend next steps

Future Enhancements

As the ECIR platform evolves, this analyzer will support:

• Real-time analysis during ECIR creation
• Predictive variance modeling
• Automatic pattern library building
• Integration with approval workflows
• Dashboard visualization generation
• Machine learning for variance prediction

This skill is a stepping stone toward the learning-first platform vision.