AG Kit is a toolkit that gives Google Antigravity coding agents a structured workspace with rules, skills, specialist agents, workflows, persistent memory, orchestration, MCP guidance, and a safety hook. It is for building and operating agent workflows in Antigravity, and its catalogue entries provide parts of that workspace contract.
Borrowing it
Nothing to install: this file belongs to vudovn/ag-kit. 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/vudovn/ag-kit/main/.agents/skills/simplify-code/SKILL.mdgit clone --depth 1 https://github.com/vudovn/ag-kitWrote 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/vudovn/ag-kit/simplify-code)<a href="https://agentmods.dev/skills/vudovn/ag-kit/simplify-code"><img src="https://agentmods.dev/badge/skills/vudovn/ag-kit/simplify-code/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/vudovn/ag-kit/simplify-code"><img src="https://agentmods.dev/badge/skills/vudovn/ag-kit/simplify-code.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00032 | $0.00940 |
| Opus 5.5 | $0.00013 | $0.00376 |
| Sonnet 5.5 | $0.00006 | $0.00188 |
| Haiku 4.5 | $0.00003 | $0.00094 |
Grade A, and why
simplify-code 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 1mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- simplify-code — 91% identical, 156 lines differ
How it starts
The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simplify Code — Reduce Unnecessary Complexity
The best code is the code you don't have to write. The second best is the code anyone can read.
Core Principle
Complexity is a cost. Every abstraction, every indirection, every clever pattern
adds cognitive load. Simplify ruthlessly unless complexity serves a clear purpose.
Simplification Checklist
1. Unnecessary Abstractions
| Smell | Simplification |
|---|---|
| Wrapper class that just delegates | Remove wrapper, use the inner class directly |
| Factory that creates only one type | Replace with direct constructor |
| Strategy pattern with one strategy | Replace with simple function |
| Interface with one implementation | Remove interface, use the class |
| Abstract class with one child | Merge into the child class |
| Config object for 2 values | Use function parameters |
2. Dead Code
| Smell | Action |
|---|---|
| Unused imports | Remove |
| Unreachable branches | Remove (check tests first) |
| Commented-out code | Remove (it's in git history) |
| Unused variables/functions | Remove |
| TODO comments older than 6 months | Remove or create issue |
| Feature flags for launched features | Remove flag, keep the code |
3. Deep Nesting
// ❌ Before: 4 levels deep
function process(data) {
if (data) {
if (data.items) {
for (const item of data.items) {
if (item.active) {
doSomething(item)
}
}
}
}
}
// ✅ After: Early returns + filter
function process(data) {
if (!data?.items) return
data.items
.filter(item => item.active)
.forEach(doSomething)
}
4. Over-Parameterized Functions
// ❌ Before: 8 parameters
function createUser(name, email, age, role, dept, active, verified, avatar) { }
// ✅ After: Object parameter
function createUser(opts: CreateUserOpts) { }
5. Premature Optimization
| Smell | Simplification |
|---|---|
| Custom cache for <100 items | Remove cache, measure first |
| Memoization on cheap functions | Remove memo |
| Lazy loading for small modules | Use direct import |
| Complex state machine for 3 states | Use simple if/else or switch |
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.
- 1mo ago First seen · 133 lines · 32 tokens per session scan A 1e2ab8d06593
simplify-code is a skill published in the GitHub repository vudovn/ag-kit (8,199 stars, last pushed 3d ago), licensed MIT. It adds 32 tokens to every session and 940 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 2026-08-30.
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