Journey Storage Agent Skill

Use as the storage build stage of the Butterbase journey. Implements the Storage section of 02-plan.md by delegating to the storage skill. Calls manage_storage (update_config) for bucket setup; uploads are exercised at frontend integration time, not here. Skipped if the plan has no file uploads.

535 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

532

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/butterbase-ai/butterbase-skills --skill journey-storage

The instruction itself

7 sections, as written by the author

Journey: Storage

Stage 3d of the guided journey. Configure storage buckets/ACLs from the plan.

When to use

Dispatched by journey when current_stage: storage.
Directly via /butterbase-skills:journey-storage.
Skipped (annotated (n/a)) if the plan has no Storage section.

Preflight

If docs/butterbase/03-preflight.md is missing, older than 24 hours, or 00-state.md has app_id: null, invoke butterbase-skills:journey-preflight first. Wait for it to return successfully before proceeding.

Inputs

docs/butterbase/02-plan.md — the Storage section.
docs/butterbase/00-state.md — for app_id.

Procedure

Refresh docs. Call butterbase_docs with topic: "storage". For presigned URL patterns, also WebFetch https://docs.butterbase.ai/storage. Skip if cache is fresh.

Read the Storage section of 02-plan.md. Print it back: "About to configure storage: <buckets>. Proceed?". Wait for yes.
Invoke butterbase-skills:storage via the Skill tool, passing the Storage plan and app_id. The wrapped skill calls manage_storage action: update_config per bucket (visibility, max object size).
Smoke: request an upload URL via manage_storage action: upload_url and a matching download_url to confirm presigned URL minting works.
Append one line to docs/butterbase/04-build-log.md:

<ISO timestamp> storage manage_storage ok

Tick - [x] storage in 00-state.md, set current_stage: to the next unchecked stage.
Return to journey orchestrator (or ask "Continue to the next stage? (yes/no)").

Outputs

Configured storage buckets.
One line in 04-build-log.md.

Anti-patterns

❌ Persisting s3_key in app data — always persist object_id. The wrapped skill handles this; do not override it.

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How to use it

Copy the folder

Take butterbase-ai/journey-storage from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.