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YepAPI/skills

Presigned URL uploads, multipart for large files, S3/R2/Supabase Storage.

What is skills?

skills is a Claude Code agent skill that presigned URL uploads, multipart for large files, S3/R2/Supabase Storage.

Works with~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/YepAPI/skills/tree/HEAD/skills/file-uploads
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Open a new chat with this agent skill pre-loaded.

OpenAIChatGPTClaudeClaudeGeminiGeminiGrokGrokPerplexityPerplexityDeepSeekDeepSeek

Documentation

File Uploads

Rules

  • Presigned URLs for direct-to-storage uploads — don't proxy through your server
  • Multipart upload for files > 5MB — chunk into parts, upload in parallel
  • Client-side validation: file type, file size limits — server validates again
  • Image optimization: resize on upload (max 2048px), convert to WebP, strip EXIF
  • Progress tracking: XMLHttpRequest or fetch with ReadableStream for upload progress
  • Storage: S3, R2 (Cloudflare), or Supabase Storage — presigned URL pattern is the same
  • File type validation server-side: check magic bytes, not just file extension
  • Virus scanning for user uploads in high-security contexts

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

YepAPI/skills

WCAG 2.1 AA — semantic HTML, keyboard navigation, screen readers.

YepAPI/skills

Experiment setup, variant splitting, statistical significance, and feature flag integration.

YepAPI/skills

CRUD generators, data tables, user management, role-based access, and bulk operations.

YepAPI/skills

Monitor what ChatGPT and Gemini say about your brand using YepAPI.

YepAPI/skills

Queue workers with BullMQ/Inngest/Trigger.dev, job retries, dead letter queues, concurrency.

YepAPI/skills

Commander.js, interactive prompts with Clack, spinners, colors, config files, exit codes, and npm publishing.

YepAPI/skills

cmdk integration, Cmd+K trigger, fuzzy search, grouped actions, keyboard navigation, and dynamic action registration.

YepAPI/skills

Content planning with trend and sentiment data from YepAPI.

YepAPI/skills

Content calendar, keyword-driven planning, and content briefs.

YepAPI/skills

Theme switching with CSS variables, system preference detection, next-themes, and persistence.

YepAPI/skills

Threaded comments, @mentions, reactions, moderation queue, optimistic UI, and cursor pagination.

YepAPI/skills

Competitive analysis between domains using YepAPI.

YepAPI/skills

Layout grids, KPI cards, data tables with sorting/filtering, sidebar navigation, and responsive breakpoints.

YepAPI/skills

Data encryption — TLS everywhere, AES-256-GCM for PII, bcrypt passwords, encrypted backups.

YepAPI/skills

Chart patterns with Recharts/Nivo/D3, responsive containers, color scales, and accessibility.

YepAPI/skills

Drizzle schema definition, push vs migrate, type-safe queries, relations, transactions, and prepared statements.

YepAPI/skills

Upload handling, resize/compress, CDN delivery, blur placeholders, and next/image patterns.

YepAPI/skills

Local business and Google Maps research using YepAPI.

YepAPI/skills

Cursor-based pagination, IntersectionObserver, virtualized lists with @tanstack/react-virtual, and scroll position restoration.

YepAPI/skills

Chat UI components, streaming responses with AI SDK, context window management, and RAG patterns.

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