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 aj-geddes/useful-ai-prompts --skill rate-limiting-implementationgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote 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/aj-geddes/useful-ai-prompts/rate-limiting-implementation)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/rate-limiting-implementation"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/rate-limiting-implementation/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/aj-geddes/useful-ai-prompts/rate-limiting-implementation"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/rate-limiting-implementation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk 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 | $0.00046 | $0.00743 |
| Opus 5 | $0.00023 | $0.00371 |
| Sonnet 5 | $0.00009 | $0.00149 |
| Haiku 4.5 | $0.00005 | $0.00074 |
Grade A, and why
rate-limiting-implementation 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 — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rate Limiting Implementation
Table of Contents
Overview
Implement rate limiting and throttling mechanisms to protect your services from abuse, ensure fair resource allocation, and maintain system stability under load.
When to Use
- Protecting public APIs from abuse
- Preventing DOS/DDOS attacks
- Ensuring fair resource usage across users
- Implementing API quotas and billing tiers
- Managing system load and backpressure
- Enforcing SLA limits
- Controlling third-party API usage
- Database connection management
Quick Start
Minimal working example:
interface TokenBucketConfig {
capacity: number;
refillRate: number; // tokens per second
refillInterval: number; // milliseconds
}
class TokenBucket {
private tokens: number;
private lastRefill: number;
private readonly capacity: number;
private readonly refillRate: number;
private readonly refillInterval: number;
private refillTimer?: NodeJS.Timeout;
constructor(config: TokenBucketConfig) {
this.capacity = config.capacity;
this.tokens = config.capacity;
this.refillRate = config.refillRate;
this.refillInterval = config.refillInterval;
this.lastRefill = Date.now();
this.startRefill();
}
private startRefill(): void {
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Token Bucket Algorithm (TypeScript) | Token Bucket Algorithm (TypeScript) |
| Redis-Based Distributed Rate Limiter | Redis-Based Distributed Rate Limiter |
| Express Middleware | Express Middleware |
| Sliding Window Algorithm (Python) | Sliding Window Algorithm (Python) |
| Tiered Rate Limiting | Tiered Rate Limiting |
| Adaptive Rate Limiting | Adaptive Rate Limiting |
What ships with it
8 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.
- references/adaptive-rate-limiting.md 1.1 KB
- references/express-middleware.md 3.1 KB
- references/redis-based-distributed-rate-limiter.md 3.0 KB
- references/sliding-window-algorithm-python.md 3.3 KB
- references/tiered-rate-limiting.md 2.9 KB
- references/token-bucket-algorithm-typescript.md 2.2 KB
- scripts/validate-api.sh 440 B runs code
- templates/api-scaffold.yaml 467 B
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 · 104 lines · 46 tokens per session scan A 1bf958991c97
rate-limiting-implementation is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (338 stars, last pushed 6mo ago), licensed MIT. It adds 46 tokens to every session and 743 once invoked, about $0.0002 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 2026-09-03.
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