What is rate-limiting-implementation?

A set of implementation patterns for limiting how often users or services can call an API or consume shared resources. It covers throttling, quotas, and backpressure, which slows or queues work when demand is too high.

Use it to protect public APIs, enforce billing or service limits, control third-party API usage, manage database connections, and handle system load.

It helps prevent abuse, denial-of-service attacks, and overloaded services while keeping resource use fair across users.

rate-limiting-implementation — Skill by aj-geddes/useful-ai-prompts

Install

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.

Any agent

npx skills add aj-geddes/useful-ai-prompts --skill rate-limiting-implementation

Clone the repo

git clone --depth 1 https://github.com/aj-geddes/useful-ai-prompts

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/rate-limiting-implementation/github.svg)](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/rate-limiting-implementation)

Your own site

<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.

Your own site · 80×15

<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>

Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 743 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

Socket warn 16 Sept 2026
Snyk pass 16 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

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 5.5	$0.00018	$0.00297
Sonnet 5.5	$0.00009	$0.00149
Haiku 4.5	$0.00005	$0.00074

Measured 2mo ago against content hash 1bf958991c97, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/validate-api.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/rate-limiting-implementation/SKILL.md · 104 lines

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.

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

Read the full file on GitHub · 104 lines

Files

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.

Changes

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 · 104 lines · 46 tokens per session scan A 1bf958991c97

Subscribe to this mod's changes

rate-limiting-implementation is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 46 tokens to every session and 743 once invoked, about $0.0002 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 2026-09-03.

Backend and APIs Security

rate-limiting-implementation next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
rate-limiting-implementationaj-geddes/useful-ai-prompts	Skill	376	8mo ago	MIT	A	46	Claude Code, Codex
mem0-oss-to-platformmem0ai/mem0	Skill	68k	2d ago	Apache-2.0	A	217	Claude Code, Codex
azure-mgmt-botservice-dotnetmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	78	Claude Code
fastapi-router-pymicrosoft/skills	Skill	3.2k	yesterday	MIT	A	46	Claude Code
dev-runtimelangwatch/langwatch	Skill	5.0k	yesterday	Apache-2.0	A	172	Claude Code
api-designericrisco/rsc-harness	Skill	503	2d ago	MIT	A	105	Claude Code, Codex
migrate-segw-to-raparc-mcp/arc-1	Skill	252	yesterday	MIT	A	106	Claude Code

rate-limiting-implementation