Agent-Skills.md

Agent Skills: EVM Calculator

Automated calculation of all earned value metrics and forecasts

Earned Value ManagementID: a5c-ai/babysitter/evm-calculator

Repository

a5c-ai/babysitter
a5c-aiLicense: MIT
244

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pnpm dlx add-skill https://github.com/a5c-ai/babysitter/tree/HEAD/plugins/babysitter/skills/babysit/process/specializations/domains/business/project-management/skills/evm-calculator

Skill Files

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plugins/babysitter/skills/babysit/process/specializations/domains/business/project-management/skills/evm-calculator/SKILL.md

Skill Metadata

Name
evm-calculator
Description
Automated calculation of all earned value metrics and forecasts

EVM Calculator

Overview

The EVM Calculator skill provides comprehensive automated calculation of all Earned Value Management metrics, indices, and forecasts. It supports PMI PMBOK and ANSI/EIA-748 compliant calculations for project cost and schedule performance measurement and forecasting.

Capabilities

Core EVM Metrics

  • Calculate Planned Value (PV/BCWS)
  • Calculate Earned Value (EV/BCWP)
  • Calculate Actual Cost (AC/ACWP)
  • Calculate Schedule Variance (SV) and Cost Variance (CV)
  • Calculate SV% and CV% for normalized comparison

Performance Indices

  • Calculate Schedule Performance Index (SPI)
  • Calculate Cost Performance Index (CPI)
  • Calculate Critical Ratio (CR = SPI x CPI)
  • Calculate TCPI (To-Complete Performance Index)
  • Support both BAC-based and EAC-based TCPI

Forecasting

  • Calculate EAC using multiple methods:
    • EAC = BAC / CPI (typical performance)
    • EAC = AC + (BAC - EV) (atypical performance)
    • EAC = AC + [(BAC - EV) / (SPI x CPI)] (combined)
    • EAC = Bottom-up re-estimate
  • Calculate ETC (Estimate to Complete)
  • Calculate VAC (Variance at Completion)

Visualization and Trending

  • Generate S-curve visualizations
  • Perform trend analysis on indices
  • Create performance dashboards
  • Generate variance analysis reports
  • Produce management reserve tracking

Usage

Input Requirements

  • Budget baseline (time-phased BAC)
  • Progress data (percent complete or physical measurement)
  • Actual cost data by period
  • Work Breakdown Structure alignment
  • Optional: Management reserve allocation

Output Deliverables

  • Complete EVM metrics table
  • Performance indices with trends
  • Forecasts (EAC, ETC, VAC)
  • S-curve visualization
  • Variance analysis narrative

Example Use Cases

  1. Monthly Reporting: Calculate all EVM metrics for status reports
  2. Forecasting: Generate EAC using appropriate method
  3. Trend Analysis: Track SPI/CPI trends over time
  4. Corrective Action: Identify and analyze variances

Process Integration

This skill integrates with the following processes:

  • earned-value-management.js
  • budget-development.js
  • portfolio-prioritization.js
  • Status Reporting and Communication Management

Dependencies

  • Financial calculation libraries
  • Time series analysis utilities
  • Visualization libraries
  • Data aggregation algorithms

Related Skills

  • SK-001: Gantt Chart Generator
  • SK-009: NPV/IRR Calculator
  • SK-011: Benefits Tracking Dashboard