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file-upload

Implement Fusebase file uploads with presigned PUT headers and file descriptors.

6|Updated May 29, 2026
Search Tags:#multipart-upload#file-upload#presigned-url#fusebase#file-descriptor#large-file-upload#fusebase-api
One-click install
npx skills add https://github.com/fusebase-dev/fusebase-flow --skill file-upload-fusebase-dev
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: file-upload
Source: https://github.com/fusebase-dev/fusebase-flow/tree/main/.agents/skills/file-upload
Command: npx skills add https://github.com/fusebase-dev/fusebase-flow --skill file-upload-fusebase-dev

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill eliminates broken and inconsistent file upload implementations in Fusebase apps by providing a single source of truth for the complete upload lifecycle, preventing common errors like incorrect URL handling, duplicated API logic, and mismatched terminology across development teams.

Core Features & Use Cases

  • Full Lifecycle Guidance: Covers temp file creation (including large file multipart uploads), stored file generation, display URL normalization, and standardized file descriptor construction.
  • Edge Case Handling: Enforces correct presigned PUT header rules and relative URL prefixing to avoid CORS failures and 404 errors, plus handles legacy API field casing quirks.
  • Use Case: Use this Skill when building file upload for Fusebase note attachments, client-facing app file uploads, or any feature that needs to pass valid file descriptors to downstream Fusebase services like dashboards and Gate.

Quick Start

Use the file-upload skill to implement a reliable file upload feature for your Fusebase app that follows the canonical temp to stored to display URL lifecycle.

Frequently Asked Questions about file-upload

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement file uploads in a Fusebase app without getting CORS errors?▼

Proper Fusebase file uploads require enforcing correct presigned PUT header rules during temp file creation and normalizing relative URL prefixes to prevent CORS failures and 404 errors throughout the upload lifecycle.

What is the correct lifecycle for a Fusebase file upload from temp file to display URL?▼

The canonical Fusebase file upload lifecycle flows from temporary file creation to stored file generation, followed by display URL normalization and standardized file descriptor construction for downstream services.

How do I handle large file multipart uploads using the Fusebase API?▼

Large file multipart uploads in Fusebase are handled during the initial temporary file creation phase, which supports chunked data transfer before you generate the final stored file and construct the standardized file descriptor.

Why do my Fusebase file descriptors fail when passed to downstream services like dashboards and Gate?▼

Fusebase file descriptors fail in downstream services like dashboards and Gate when file descriptor construction is not standardized, often due to mismatched terminology or unhandled legacy API field casing quirks during the upload lifecycle.

What's the best way to standardize file descriptor construction for Fusebase note attachments?▼

The best way to standardize file descriptor construction for Fusebase note attachments is to follow a single source of truth for the complete upload lifecycle, ensuring correct relative URL normalization and handling legacy API field casing quirks.

Do I need to coordinate file descriptor generation with neighboring Fusebase skills to avoid API duplication?▼

Yes, you need to coordinate with neighboring Fusebase skills to avoid API duplication, ensuring that file descriptor generation and presigned URL handling rely on this single source of truth rather than duplicated logic.

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