# Task 4: Write tooling README

**Plan**: reusable-impact-tooling
**Status**: DONE
**Depends on**: Task 3 (need final directory structure)
**Deliverable**: README for the impact toolkit

## What to do

1. Write a README covering:
   - What the toolkit does (tracks energy, CO2, cost per conversation).
   - How to install (run `install.sh`).
   - What gets measured and how (brief summary with pointer to methodology).
   - How to view results (`show-impact.sh`).
   - Known limitations (estimates, not measurements).
   - Dependencies (`jq`, `bash`, Claude Code with hooks support).

2. Keep it short. Under 100 lines.

## Done when

- A new user can understand and install the toolkit from the README alone.