Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add catcatcatstudio/cat-skills --skill liquid-cat-physicsgit clone --depth 1 https://github.com/catcatcatstudio/cat-skillsWrote 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/catcatcatstudio/cat-skills/liquid-cat-physics)<a href="https://agentmods.dev/skills/catcatcatstudio/cat-skills/liquid-cat-physics"><img src="https://agentmods.dev/badge/skills/catcatcatstudio/cat-skills/liquid-cat-physics/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/catcatcatstudio/cat-skills/liquid-cat-physics"><img src="https://agentmods.dev/badge/skills/catcatcatstudio/cat-skills/liquid-cat-physics.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 | $0.00107 | $0.04755 |
| Opus 5 | $0.00053 | $0.02377 |
| Sonnet 5 | $0.00021 | $0.00951 |
| Haiku 4.5 | $0.00011 | $0.00475 |
Grade A, and why
liquid-cat-physics 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 9d 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 — 318 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Liquid Cat Physics
Autonomous deep-work engine. One command to start, then walk away.
How it works
Type /liquid-cat-physics and the skill runs a pre-flight readiness check (once), sets up a recurring cron loop, and keeps going autonomously every 10 minutes.
Each iteration cycle:
ORIENT → Read state, know where you are (fast read)
THINK → Expert assessment, decide next action (subagent)
GATE → GREEN/YELLOW/RED confidence check (decide)
ACT → Execute ONE unit of work (main context)
PERSIST → Update PROJECT_STATE.md + selective notes (always)
State lives on disk, not in conversation. Context compaction can't erase it.
Reference files (read on demand, NOT every iteration):
references/confidence-gate.md— re-read when GATE decision is uncertainreferences/anti-thrashing.md— re-read when a failure occurs or failure_log is non-emptyreferences/elevate-lens.md— re-read in THINK phase (what to work on)references/prodev-standard.md— re-read in THINK + ACT phases (how to execute)references/browser-verification.md— re-read when doing visual/UI work
When NOT to use this skill
- No project structure (no git repo, no CLAUDE.md, no clear goals) — set those up first
- One-off task or quick fix — just do it directly
- Project requires continuous human design decisions — use /architect instead
Invocation
| Input | Action |
|---|---|
/liquid-cat-physics |
Start the loop (default 10m interval) + run first iteration |
/liquid-cat-physics 5m |
Start with custom interval |
/liquid-cat-physics status |
Show current state: iteration, cron ID, blocked items, recent actions |
/liquid-cat-physics stop |
Cancel the cron loop + set status to paused |
/liquid-cat-physics reset |
Reset iteration count, clear failure log, keep notebook history |
Startup Decision Tree
Every invocation enters here. One path, no ambiguity.
Read PROJECT_STATE.md → look for ## Loop State
│
├── No Loop State found → FIRST RUN
│ 1. Run Phase 0: Pre-Flight (interactive)
│ 2. Initialize Loop State + _notebook/
│ 3. Create cron at requested interval
│ 4. Proceed to ORIENT
│
├── Loop State exists, status: paused
│ 1. Create new cron at stored interval
│ 2. Set status: active
│ 3. Proceed to ORIENT
│
├── Loop State exists, status: active
│ 1. Check cron_id via CronList
│ ├── Cron alive → Proceed to ORIENT
│ └── Cron dead (session restart, expired)
│ 1. Recreate cron at stored interval
│ 2. Update cron_id
│ 3. Proceed to ORIENT
│
├── Loop State exists, status: checkpoint
│ 1. Human resumed after checkpoint — create new cron
│ 2. Set status: active
│ 3. Proceed to ORIENT
│
├── Loop State exists, status: complete → Exit. "Project complete."
│
└── Loop State exists, status: blocked-stopped
1. Check if blocked items are now unblocked
├── Still blocked → Exit. Show blocked items.
└── Something unblocked → Create cron, set active, ORIENT
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 318 lines · 107 tokens per session scan A f22dc886d1ec
liquid-cat-physics is a skill published in the GitHub repository catcatcatstudio/cat-skills (3 stars, last pushed 13d ago), licensed MIT. It adds 107 tokens to every session and 4,755 once invoked, about $0.0005 per session on Opus 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.
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