The Agent Skills Directory

[COMMAND_EXECUTION]: The skill utilizes subprocess.run to execute the pgrep utility to check for active Calibre processes, ensuring the library database is not locked. It also uses standard Calibre command-line tools such as calibredb and calibre-debug, alongside system utilities like zip -d and gio trash, for ebook library maintenance and file management tasks.\n- [INDIRECT_PROMPT_INJECTION]: The skill interacts with external and untrusted data by parsing EPUB metadata and internal structures, as well as referencing Wikipedia for title casing rules, which introduces a potential attack surface for indirect injection.\n
Ingestion points: The skill reads metadata from internal EPUB components (OPF files, containers) and local database entries.\n
Boundary markers: A strict operational cycle is enforced where the agent must provide a diagnostic report and recommendations, requiring an explicit user "ok" before any changes are applied.\n
Capability inventory: The skill is capable of performing write operations on the local library database and ebook files, including modifying archives and deleting files.\n
Sanitization: Implements normalization for metadata and provides specific instructions for the agent to identify and remove sensitive buyer identifiers (PII) without ever outputting their values to the agent's display.

calibre-library