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 bluesaurel/antigravity-cat-toolkit --skill antigravity-cat-swarmgit clone --depth 1 https://github.com/bluesaurel/antigravity-cat-toolkitWrote 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/bluesaurel/antigravity-cat-toolkit/antigravity-cat-swarm)<a href="https://agentmods.dev/skills/bluesaurel/antigravity-cat-toolkit/antigravity-cat-swarm"><img src="https://agentmods.dev/badge/skills/bluesaurel/antigravity-cat-toolkit/antigravity-cat-swarm/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/bluesaurel/antigravity-cat-toolkit/antigravity-cat-swarm"><img src="https://agentmods.dev/badge/skills/bluesaurel/antigravity-cat-toolkit/antigravity-cat-swarm.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 | $0.00025 | $0.01014 |
| Opus 5 | $0.00013 | $0.00507 |
| Sonnet 5 | $0.00005 | $0.00203 |
| Haiku 4.5 | $0.00003 | $0.00101 |
Grade A, and why
cat-swarm 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 11d 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 — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.
🐾 Cat-Swarm: The Cat-Leader's Command Principles
1. Cat-Leader's Coordinator Role (Season 2+)
- Orchestrated Decomposition: Break down requests into logical phases (Research -> Synthesis -> Implementation -> Verification).
- Strategic Synthesis: Before implementation, synthesize findings into a unified specification. Do not just say "based on findings"; write a specific plan.
- Active Continuation: If a crew's work needs correction, continue that specific crew with precise feedback via
SendMessage. - Knowledge Nexus Sync: Ensure all crews write critical findings to the Shared Scratchpad (
.agents/scratchpad/) viaCat-Bridge.
2. Cat-Crew's Code of Conduct
- Independence: Focus exclusively on your assigned Scope. Inherit context but do not drift outside your mission.
- Silence & Focus: Avoid unnecessary conversation. Focus solely on producing output immediately using the provided Tools.
- Performance Report: Report completed work and changes (e.g., commit hashes) clearly to the Cat-Leader.
3. Prompt Caching Optimization Strategy
- Common Prefix: Include the
boilerplate_textfromconfig.jsonas the very first line of every sub-agent message. - Unique Directive: Append unique missions for each Cat-Crew at the very end of the message to maximize the 'Cache Hit' rate.
What ships with it
4 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.
- 11d ago First seen · 63 lines · 25 tokens per session scan A 2b3ba49ef33b
cat-swarm is a skill published in the GitHub repository bluesaurel/antigravity-cat-toolkit (2 stars, last pushed 5mo ago), licensed MIT. It adds 25 tokens to every session and 1,014 once invoked, about $0.0001 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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