Agent skill · Upstash

Upstash Rate Limit (JS) skill for Claude Code, Codex and Cursor

Adds rate limiting to API routes and middleware with @upstash/ratelimit.

Officialname: upstash-ratelimit-js★ 34 (repo)pushed 2026-10-22MITSKILL.md on GitHubchecked 2026-11-07

What it does, in the publisher's words

Rate limiting for serverless and edge apps with the @upstash/ratelimit TypeScript/JavaScript SDK backed by Upstash Redis. Use when adding a rate limiter or throttling to an API route, Next.js middleware, Vercel Edge, Cloudflare Workers, or any HTTP endpoint; returning 429 Too Many Requests; choosing between fixed window, sliding window, and token bucket algorithms; limiting per user, IP, API key, or tenant with...

The description field of the SKILL.md. The agent reads only this at startup and decides from it when to load the full skill.

Install Upstash Rate Limit (JS)

The skills CLI copies the skill into the folder of each agent you pick (Claude Code, Codex, Cursor, Copilot, Gemini CLI, OpenCode, Windsurf...). Add -g for all projects. Needs Node.js 22.20+. docs

npx skills add upstash/skills --skill upstash-ratelimit-js

This repo is a plugin marketplace. Inside Claude Code, add it and install the plugin that holds the skill (upstash), or copy only this skill into ~/.claude/skills. docs

/plugin marketplace add upstash/skills
/plugin install <plugin>@upstash

# or only this skill:
npx skills add upstash/skills --skill upstash-ratelimit-js -a claude-code

Download the skill folder, zip it, then Customize > Skills > + > Create skill > Upload a skill. Code execution must be on (Settings > Capabilities). docs

git clone --depth 1 https://github.com/upstash/skills.git /tmp/upstash-ratelimit-js-src
cp -r /tmp/upstash-ratelimit-js-src/skills/upstash-ratelimit-js ./upstash-ratelimit-js
zip -r upstash-ratelimit-js.zip upstash-ratelimit-js

Codex reads skills from .agents/skills in the repo or ~/.agents/skills. Type $ in Codex to use one. docs

npx skills add upstash/skills --skill upstash-ratelimit-js -a codex

gh skill (GitHub CLI 2.90+, preview) installs it for Copilot in VS Code, the CLI and the cloud agent. Copilot also reads .github/skills and ~/.copilot/skills. docs

gh skill install upstash/skills upstash-ratelimit-js

Cursor reads .cursor/skills, .agents/skills and ~/.cursor/skills (and .claude/skills). It does not install loose skills from a GitHub URL, so copy it in. docs

npx skills add upstash/skills --skill upstash-ratelimit-js -a cursor

Installs from the GitHub repo; --path picks this skill out of the repo. Default scope is user (all projects). docs

gemini skills install https://github.com/upstash/skills.git --path skills/upstash-ratelimit-js

OpenCode reads .opencode/skills, ~/.config/opencode/skills and the Claude and .agents folders. docs

npx skills add upstash/skills --skill upstash-ratelimit-js -a opencode

Windsurf (now Devin Desktop) reads .devin/skills, .windsurf/skills and ~/.codeium/windsurf/skills. docs

npx skills add upstash/skills --skill upstash-ratelimit-js -a windsurf

Works with

Claude Code, Claude.ai and Claude Desktop, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode, Windsurf and other agents that read the open Agent Skills format.

What's in the SKILL.md

3 sections

Bundled docs and source
Quick Start
Other Skill Files

Bundled files

algorithms.md
features.md
methods-getting-started.md
pricing-cost.md
traffic-protection.md

Loaded only when the instructions point to them.

Facts

Skill name: upstash-ratelimit-js
Publisher: Upstash (official)
Repo: upstash/skills
License: MIT
SKILL.md size: 131 words, 31 lines
Bundled files: 5, 5 docs
Repo stars: 34 (as of 2026-10-24)
SKILL.md checked: 2026-11-07

Pairs with the Upstash MCP server: the server gives the agent the tools, the skill teaches it how to use them.

More skills from upstash/skills

Upstash Redis (JS): Uses the @upstash/redis HTTP client for caching and data in serverless and edge apps.

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FAQ

What does the upstash-ratelimit-js skill do?+

Adds rate limiting to API routes and middleware with @upstash/ratelimit. In its own SKILL.md, Upstash describes it as: "Rate limiting for serverless and edge apps with the @upstash/ratelimit TypeScript/JavaScript SDK backed by Upstash Redis."

How do I install the upstash-ratelimit-js skill?+

Run npx skills add upstash/skills --skill upstash-ratelimit-js and pick your agents, or use the tab for your agent above. In Claude Code the skill ends up in ~/.claude/skills/upstash-ratelimit-js/SKILL.md; in Codex and Cursor in .agents/skills/upstash-ratelimit-js/.

Does Upstash Rate Limit (JS) work in Codex, Cursor and Copilot, or only Claude?+

It's a standard SKILL.md, so any agent that reads the Agent Skills format can use it: Claude Code, the Claude apps, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode, Windsurf and more.

Who maintains Upstash Rate Limit (JS)?+

Upstash, the company or project behind it, in the upstash/skills repo on GitHub, last pushed 2026-10-22. License: MIT.

Read a skill's SKILL.md and scripts before you install it: skills aren't verified by any agent vendor. Claude skills marketplace · How to install skills · MCP servers