Menu

Individual skill

waterfall-and-bridge-charts

0upvotes

Builds waterfall (bridge) charts that explain how a starting value became an ending value through a sequence of additions and subtractions.

skills/waterfall-and-bridge-charts/SKILL.md

Read pinned source

Source commit 45f80c2fab1ea7fc4d78b09b3c7c51d0ab4fc44a

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
No
Repository scan complete
No
Skill scan complete
Yes
Observed behavior
Not checked yet
Last checked
Nov 11, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
26
Repository last updated
Sep 8, 2026
License
MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

# Waterfall and Bridge Charts

## When to use
Use this when the message is "how did we get from A to B." A waterfall, also called a bridge, decomposes a change into its drivers: opening value, a sequence of positive and negative moves, and the closing value. It is the standard chart for profit bridges, variance analysis, headcount changes, and price-volume-mix.

## What it does
It returns a fully specified waterfall: the bar sequence, which bars are totals versus deltas, the floating-bar construction, color rule for increases and decreases, connector lines, and labeling. It makes the drivers of a change legible at a glance.

## Method
Step 1. Define the start, the end, and the drivers.
List the opening value, each driver that moves it (with sign and size), and the closing value. The drivers must sum from opening to closing exactly. If they do not, there is a missing bridge item; surface it as an explicit "other" or "unexplained" bar rather than hiding the gap.

Step 2. Order the drivers deliberately.
Order tells a story. Common orders are largest driver first, or a logical sequence (volume, then price, then mix, then cost). Group all increases then all decreases only if that aids the narrative. Keep the order stable if you show the same bridge across periods.
Back to top