The Agent Skills Directory

[COMMAND_EXECUTION]: The skill invokes a local bash script (shorten.sh) to interface with the shortening service. It uses double quotes around variable expansions ("$URL") to prevent shell expansion issues or basic command injection.
[EXTERNAL_DOWNLOADS]: The script performs a network request to is.gd, which is a well-known and legitimate service for URL shortening.
[DATA_EXFILTRATION]: The skill transmits a user-provided URL to the is.gd API. This is the primary documented function of the tool. The implementation utilizes curl with the --data-urlencode flag, ensuring the data is transmitted as a safe parameter and preventing the API from misinterpreting the input.
[PROMPT_INJECTION]: \n- Ingestion points: The URL to be shortened enters the skill via a command-line argument in shorten.sh.\n- Boundary markers: None identified, as the script performs a single, specific operation.\n- Capability inventory: The skill is limited to making network requests to the is.gd domain using curl.\n- Sanitization: User input is properly sanitized using URL encoding prior to the network request.

shorten