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File uploads: presigned URLs, S3 and R2 v1.0.0

Use this resource to build safe and fast file uploads

New

  • 458 downloads
  • 201 likes
  • 141 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install secure-file-uploads

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent helps design direct uploads to storage, validation of real file types and streaming of large files. You get an implementation and security gaps to avoid.

Mostly picked by

Updated November 2, 2026

Card for the “File uploads: presigned URLs, S3 and R2” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md: agent role and working rules
  • references/patterns.md: recommended methods and templates
  • references/sharp_edges.md: common mistakes and their causes

Good fit for

  • Your uploads go through your server and slow it down
  • Your users upload large files

Not for

    Tags

    • uploads
    • s3
    • storage
    • security

    About

    You say

    “Add profile photo uploads to Cloudflare R2 with a presigned URL and a real file-type check.”

    Card for the “File uploads: presigned URLs, S3 and R2” skill

    Skill published by omer-metin under the Apache-2.0 license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to build safe and fast file uploads
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE10.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/patterns.md3.8 KB
    • references/sharp_edges.md4.5 KB
    • references/validations.md0.8 KB
    • SKILL.md1.6 KB

    Origin and licence

    Listed unmodified

    Author
    omer-metin
    Source
    github.com/omer-metin/skills-for-antigravity/tree/e8dcf4e8737921a10088bd5c9eb65e81f74c051f/skills/file-uploads
    Licence
    Apache-2.0

    Notice

    « file-uploads » (omer-metin, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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