Borrowing it
Nothing to install: this file belongs to nyktora/noctrace. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nyktora/noctrace/main/.claude/skills/waterfall-ui/SKILL.mdgit clone --depth 1 https://github.com/nyktora/noctraceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/nyktora/noctrace/waterfall-ui)<a href="https://agentmods.dev/skills/nyktora/noctrace/waterfall-ui"><img src="https://agentmods.dev/badge/skills/nyktora/noctrace/waterfall-ui/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/nyktora/noctrace/waterfall-ui"><img src="https://agentmods.dev/badge/skills/nyktora/noctrace/waterfall-ui.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.01813 |
| Opus 5.5 | $0.00014 | $0.00725 |
| Sonnet 5.5 | $0.00007 | $0.00363 |
| Haiku 4.5 | $0.00003 | $0.00181 |
Grade A, and why
waterfall-ui scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Waterfall UI Specification
Layout (Desktop-First, Chrome DevTools Network Tab)
┌──────────────────────────────────────────────────────────────┐
│ [Logo] [Session Tabs] [Filter] [Stats] │
├───────────┬──────┬───────┬───────────────────────────────────┤
│ Name │ Type │ Time │ Waterfall (time axis) │
├───────────┼──────┼───────┼───────────────────────────────────┤
│ ▼ planner │ Task │ 12.0s │ ████████████████████████████████ │
│ Read │ Read │ 0.3s │ ██ │
│ Write │Write │ 4.5s │ ████████████ │
│ ▼ tdd │ Task │ 23.5s │ ████████████████████████████ │
│ Bash │ Bash │ 4.2s │ ████████ │
│ Edit │ Edit │ 1.8s │ █████ │
├───────────┴──────┴───────┴───────────────────────────────────┤
│ [Detail Panel — tool input/output on row click] │
└──────────────────────────────────────────────────────────────┘
Column Widths
- Name: 200px fixed
- Type: 56px fixed
- Time: 52px fixed
- Tokens: 68px fixed (like Chrome DevTools "Size" column)
- Waterfall: flex (remaining space)
Token Display Rules
- Format: under 1000 show raw number (e.g., "340"), 1000+ show with "k" suffix (e.g., "4.1k", "18.4k")
- Show sum of input + output tokens per row
- Agent rows show their own overhead tokens (the Task tool_use itself), not the sum of children
- Highlight in yellow (#f9e2af) when a single tool call exceeds 5000 total tokens (expensive call)
- Detail panel shows the split: "2.8k in / 95 out"
- Toolbar stats area shows total session token count
Waterfall Bar Rendering
Bars are div elements with position: absolute inside a relative container.
left = ((row.startTime - sessionStart) / totalDuration) * 100 + "%"
width = ((row.duration || (now - row.startTime)) / totalDuration) * 100 + "%"
Minimum width: 0.4% (so very short calls are still visible).
Color Palette (Catppuccin Mocha)
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 167 lines · 34 tokens per session scan A 163fb51c7d89
waterfall-ui is a skill published in the GitHub repository nyktora/noctrace (5 stars, last pushed 6mo ago), licensed MIT. It adds 34 tokens to every session and 1,813 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
waterfall-ui compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| waterfall-uinyktora/noctrace | Skill | 5 | 6mo ago | MIT | A | 34 | Claude Code |
| anatomyNousResearch/hermes-agent | Skill | 261k | today | MIT | A | 15 | Claude Code, Codex |
| canvaasgeirtj/system_prompts_leaks | Skill | 71k | today | CC0-1.0 | A | 62 | Claude Code, Codex |
| optionsasgeirtj/system_prompts_leaks | Skill | 71k | today | CC0-1.0 | A | 13 | Claude Code |
| qa-test-plannerdavila7/claude-code-templates | Skill | 33k | today | MIT | A | 34 | Claude Code, Codex |
| archifyNousResearch/hermes-agent | Skill | 261k | today | MIT | A | 12 | Claude Code, Codex |
| visual-artifact-designEverMind-AI/Raven | Skill | 6.1k | yesterday | Apache-2.0 | A | 81 | Claude Code, Codex |