How do I install the Bkend Storage skill?

Run npx skillmds@latest add popup-studio-ai/bkend-storage in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Bkend Storage safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Bkend Storage?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Bkend Storage free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Bkend Storage?

popup-studio-ai (@popup-studio-ai) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Bkend Storage by popup-studio-ai — Agent Skill

Name: Bkend Storage
Author: popup-studio-ai

File contents

bkend.ai Storage Guide

Upload Methods

Method	Use Case	Process
Single	Normal files	Presigned URL -> PUT upload -> Register metadata
Multiple	Multiple files	Repeat single upload
Multipart	Large files	Initialize -> Part URLs -> Complete

Presigned URL

Validity: 15 minutes
PUT method with file binary
Content-Type header required

File Visibility (4 levels)

Level	Access	URL Type
public	Anyone	CDN URL (no expiry)
private	Owner only	Presigned URL (1 hour)
protected	Authenticated users	Presigned URL (1 hour)
shared	Specified targets	Presigned URL (1 hour)

Size Limits

Category	Max Size
Images	10 MB
Videos	100 MB
Documents	20 MB

Storage Categories

images, documents, media, attachments

MCP Storage Workflow

bkend MCP does NOT have dedicated storage tools. Use this workflow:

Search docs: search_docs with query "file upload presigned url"
Get examples: search_docs with query "file upload code examples"
Generate code: AI generates REST API code for file operations

Searchable Storage Docs

Doc ID	Content
`7_code_examples_data`	CRUD + file upload code examples

REST Storage API

Method	Endpoint	Description
POST	/v1/files/presigned-url	Generate presigned URL
POST	/v1/files	Register metadata (complete upload)
GET	/v1/files	File list
GET	/v1/files/:fileId	File detail
PATCH	/v1/files/:fileId	Update metadata
DELETE	/v1/files/:fileId	Delete file
POST	/v1/files/:fileId/download-url	Generate download URL

Multipart Upload (Large Files)

Method	Endpoint	Description
POST	/v1/files/multipart/init	Initialize multipart upload
POST	/v1/files/multipart/presigned-url	Get part upload URL
POST	/v1/files/multipart/complete	Complete multipart upload
POST	/v1/files/multipart/abort	Abort multipart upload

Upload Flow (Single File)

1. POST /v1/files/presigned-url -> { url, fileId }
2. PUT {url} with file binary + Content-Type header
3. POST /v1/files with { fileId, filename, contentType, size, visibility }

Multipart Upload Flow (Large File)

1. POST /v1/files/multipart/init -> { uploadId }
2. POST /v1/files/multipart/presigned-url -> [{ partNumber, url }]
3. PUT each part URL with file chunk
4. POST /v1/files/multipart/complete -> { file }

Official Documentation (Live Reference)

For the latest storage documentation, use WebFetch:

Storage Overview: https://raw.githubusercontent.com/popup-studio-ai/bkend-docs/main/en/storage/01-overview.md
MCP Storage Guide: https://raw.githubusercontent.com/popup-studio-ai/bkend-docs/main/en/mcp/07-storage-tools.md
Full TOC: https://raw.githubusercontent.com/popup-studio-ai/bkend-docs/main/SUMMARY.md

---name: bkend-storagedescription: bkend.ai file storage — upload (presigned URL), download (CDN), visibility levels, buckets. Triggers: bkend file, bkend upload, bkend download, bkend storage, bkend presigned URL---# bkend.ai Storage Guide## Upload Methods| Method | Use Case | Process ||--------|----------|---------|| Single | Normal files | Presigned URL -> PUT upload -> Register metadata || Multiple | Multiple files | Repeat single upload || Multipart | Large files | Initialize -> Part URLs -> Complete |## Presigned URL- Validity: 15 minutes- PUT method with file binary- Content-Type header required## File Visibility (4 levels)| Level | Access | URL Type ||-------|--------|----------|| public | Anyone | CDN URL (no expiry) || private | Owner only | Presigned URL (1 hour) || protected | Authenticated users | Presigned URL (1 hour) || shared | Specified targets | Presigned URL (1 hour) |## Size Limits| Category | Max Size ||----------|----------|| Images | 10 MB || Videos | 100 MB || Documents | 20 MB |## Storage Categoriesimages, documents, media, attachments## MCP Storage Workflowbkend MCP does NOT have dedicated storage tools. Use this workflow:1. **Search docs**: `search_docs` with query "file upload presigned url"2. **Get examples**: `search_docs` with query "file upload code examples"3. **Generate code**: AI generates REST API code for file operations### Searchable Storage Docs| Doc ID | Content ||--------|---------|| `7_code_examples_data` | CRUD + file upload code examples |## REST Storage API| Method | Endpoint | Description ||--------|----------|-------------|| POST | /v1/files/presigned-url | Generate presigned URL || POST | /v1/files | Register metadata (complete upload) || GET | /v1/files | File list || GET | /v1/files/:fileId | File detail || PATCH | /v1/files/:fileId | Update metadata || DELETE | /v1/files/:fileId | Delete file || POST | /v1/files/:fileId/download-url | Generate download URL |## Multipart Upload (Large Files)| Method | Endpoint | Description ||--------|----------|-------------|| POST | /v1/files/multipart/init | Initialize multipart upload || POST | /v1/files/multipart/presigned-url | Get part upload URL || POST | /v1/files/multipart/complete | Complete multipart upload || POST | /v1/files/multipart/abort | Abort multipart upload |## Upload Flow (Single File)```1. POST /v1/files/presigned-url -> { url, fileId }2. PUT {url} with file binary + Content-Type header3. POST /v1/files with { fileId, filename, contentType, size, visibility }```## Multipart Upload Flow (Large File)```1. POST /v1/files/multipart/init -> { uploadId }2. POST /v1/files/multipart/presigned-url -> [{ partNumber, url }]3. PUT each part URL with file chunk4. POST /v1/files/multipart/complete -> { file }```## Official Documentation (Live Reference)For the latest storage documentation, use WebFetch:- Storage Overview: https://raw.githubusercontent.com/popup-studio-ai/bkend-docs/main/en/storage/01-overview.md- MCP Storage Guide: https://raw.githubusercontent.com/popup-studio-ai/bkend-docs/main/en/mcp/07-storage-tools.md- Full TOC: https://raw.githubusercontent.com/popup-studio-ai/bkend-docs/main/SUMMARY.md

Frequently asked questions

Bkend Storage