Upload Artifact

What it does

When your agent uses it

• : upload artifact
• Upload implementation plan
• Create artifact from file
• Save as artifact

Example prompts

• “upload artifact”
• “upload PRD”
• “upload implementation plan”
• “/upload-artifact”

Requirements

• Python 3
• A credential in CLOSEDLOOP_API_KEY
• Pre-approved tools (allowed-tools): Bash, Read, AskUserQuestion, mcp__closedloop__create-document, mcp__closedloop__create-document-version, mcp__closedloop__list-projects

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

1. 1Script mode (preferred) — uses a standalone Python script that reads the
2. 2MCP fallback — reads the file into context and calls mcpclosedloopcreate-document

What it can do on your machine

Read from SKILL.md and the folder at commit 476b54c. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash
  • Read
  • AskUserQuestion
  • mcp__closedloop__create-document
  • mcp__closedloop__create-document-version
  • mcp__closedloop__list-projects

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (Python), which the agent can run.

  Shell commands in SKILL.md call:

  • uv

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use uv, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • CLOSEDLOOP_API_KEY

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Upload Artifact loads about 1.4k tokens when it runs. Until then it costs about 126 tokens; SKILL.md has 571 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~126

When it runs · the whole SKILL.md, loaded when a task matches

~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:35

  otherwise rely on a `.env.local` file in the current working directory:

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Bash, Read, AskUserQuestion, mcp__closedloop__create-document, mcp__closedloop__create-document-vers

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from closedloop-ai/claude-plugins at commit 476b54c, republished under its Apache-2.0 licence (© closedloop-ai). 571 words, ~1,375 tokens.

name

upload-artifact

description

Upload a file as a ClosedLoop document (PRD, implementation plan, feature, or template). Reads file content and uploads via MCP without consuming conversation context. Also supports creating new versions of existing documents. Triggers on: "upload artifact", "upload PRD", "upload implementation plan", "upload feature", "create artifact from file", "save as artifact", "push to closedloop", "new artifact version", "test artifact upload", "verify artifact content", "upload to project".

allowed-tools

Bash, Read, AskUserQuestion, mcp__closedloop__create-document, mcp__closedloop__create-document-version, mcp__closedloop__list-projects

uv run --with 'mcp[cli]>=2,<3' ${CLAUDE_SKILL_DIR}/scripts/upload_artifact.py \
  --url "$NEXT_PUBLIC_MCP_SERVER_URL" \
  --api-key "$CLOSEDLOOP_API_KEY" \
  --list-projects

uv run --with 'mcp[cli]>=2,<3' ${CLAUDE_SKILL_DIR}/scripts/upload_artifact.py \
  --url "$NEXT_PUBLIC_MCP_SERVER_URL" \
  --api-key "$CLOSEDLOOP_API_KEY" \
  --file <FILE_PATH> \
  --title "<TITLE>" \
  --type <TYPE> \
  --project-id <PROJECT_ID>

© closedloop-ai, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (scripts) in plugins/platform/skills/upload-artifact of closedloop-ai/claude-plugins.

• SKILL.md
• scripts/upload_artifact.py

Open the folder on GitHubat commit 476b54c