Setup & Installation
openclaw skills install @seblavoie/blankfiles
Or with the ClawHub CLI, for registry-managed skill folders outside a full OpenClaw workspace:
npx clawhub install blankfiles
What This Skill Does
Provides access to real, downloadable blank binary files via the blankfiles.com public API. Supports format discovery by type or category and returns direct download URLs ready for upload testing. No authentication required.
Returns verified download URLs from a live API instead of relying on fabricated paths or manually created test files.
When to use it
- Testing a file upload endpoint with a blank PDF
- Checking which image formats a web form accepts
- Getting a blank XLSX to test spreadsheet ingestion
- Discovering all available formats in a file category
- Verifying file type restrictions on an upload API
Example Workflow
Here's how your AI assistant might use this skill in practice.
INPUT
User asks: I need a blank MP4 to test my video upload endpoint
AGENT
- 1Queries GET /api/v1/files/mp4 to check availability
- 2Parses the response to extract files[].url
- 3Confirms the format exists and retrieves the direct download link
- 4Returns format, category, URL, and a one-line testing note
OUTPUT
Direct download URL for a blank MP4 with category label and upload testing context