
API Rate Limiter Designer
Rate limiting fails in two directions: too loose and one bad client takes down the database for everyone; too crude and you rate-limit your own legitimate power users into churn
- Select the right algorithm (Token Bucket, Sliding Window) for your traffic.
- Design fair-use keys and tier-based quota structures for SaaS multi-tenancy.
- Standardize 429 Error responses and X-RateLimit headers.
$8.99
· or 45 creditsSecure checkout via Stripe
Included in download
- Select the right algorithm (Token Bucket, Sliding Window) for your traffic.
- Design fair-use keys and tier-based quota structures for SaaS multi-tenancy.
Sample input
We are launching a SaaS API on Node.js and Redis. We need a rate limiting strategy to protect our DB from bursts while supporting Pro/Free tiers. Skip deep context.
Sample output
Recommended: Token Bucket (via Redis/Lua)
- Bucket Design:
- Free: 100 req/min, burst 20
- Pro: 1000 req/min, burst 200
- Keying:
ratelimit:{tier}:{api_key} - Headers:
X-RateLimit-Limit,X-RateLimit-Remaining,Retry-After - Rollout: 7-day shadow-mode logging.
Rate limiting fails in two directions: too loose and one bad client takes down the database for everyone; too crude and you rate-limit your own legitimate power users into churn
$8.99
· or 45 creditsSecure checkout via Stripe
Included in download
- Select the right algorithm (Token Bucket, Sliding Window) for your traffic.
- Design fair-use keys and tier-based quota structures for SaaS multi-tenancy.
- Instant install
Sample input
We are launching a SaaS API on Node.js and Redis. We need a rate limiting strategy to protect our DB from bursts while supporting Pro/Free tiers. Skip deep context.
Sample output
Recommended: Token Bucket (via Redis/Lua)
- Bucket Design:
- Free: 100 req/min, burst 20
- Pro: 1000 req/min, burst 200
- Keying:
ratelimit:{tier}:{api_key} - Headers:
X-RateLimit-Limit,X-RateLimit-Remaining,Retry-After - Rollout: 7-day shadow-mode logging.
About This Skill
Rate limiting fails in two directions: too loose and one bad client takes down the database for everyone; too crude and you rate-limit your own legitimate power users into churn. This skill designs your rate limiting strategy end-to-end: the right algorithm for your use case (token bucket vs. sliding window vs. fixed window and why it matters), the right granularity (per IP, per user, per API key, per endpoint — not all the same), Redis implementation that doesn't add latency on every request, the response format that doesn't enrage developers, and the exemption system for your high-trust clients. It also covers the abuse patterns rate limiting doesn't stop, so you're not surprised when someone routes around it. Give it your API shape, your traffic patterns, and your abuse concerns; it returns a rate limiting design you can implement in a day.
Use Cases
- Select the right algorithm (Token Bucket, Sliding Window) for your traffic.
- Design fair-use keys and tier-based quota structures for SaaS multi-tenancy.
- Standardize 429 Error responses and X-RateLimit headers.
- Plan a low-risk 'log-only' deployment to calibrate limits without breaking apps.
Known Limitations
- Focuses on design and strategy over writing production-ready infrastructure code.
- Does not provide real-time traffic monitoring or automated threshold tuning.
How to Install
mkdir -p ~/.claude/skills && curl -sL https://www.agensi.io/api/install/api-rate-limiter-designer -o /tmp/api-rate-limiter-designer.zip && unzip -o /tmp/api-rate-limiter-designer.zip -d ~/.claude/skills && rm /tmp/api-rate-limiter-designer.zipFree skills install directly. Paid skills require purchase - use the download button above after buying.
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Compatible with SKILL.md-compatible agents including Claude Code and Cursor.
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