The Agent Skills Directory

[DYNAMIC_EXECUTION]: The skill uses runtime compilation and process injection to modify the behavior of the system's LibreOffice binary.
File: scripts/office/soffice.py
Evidence: The script writes C source code (_SHIM_SOURCE) to a temporary file, compiles it into a shared library using gcc, and then sets the LD_PRELOAD environment variable when executing soffice to intercept and redirect socket system calls.
[PERSISTENCE]: The skill modifies application configuration files to install persistent logic.
File: scripts/recalc.py
Evidence: The setup_libreoffice_macro function installs a StarBasic macro (RECALCULATE_MACRO) into the Module1.xba file within the LibreOffice user profile directory (~/.config/libreoffice on Linux or ~/Library/Application Support/LibreOffice on macOS). This code remains on the system and is accessible to all subsequent LibreOffice sessions.
[INDIRECT_PROMPT_INJECTION]: The skill reads and processes external spreadsheet data and returns cell contents to the agent, creating a surface for indirect injection attacks.
Ingestion points: scripts/recalc.py reads cell values from user-provided spreadsheets using openpyxl.load_workbook(data_only=True). The agent is also instructed to use pandas.read_excel in SKILL.md.
Boundary markers: No clear markers or instructions are provided to distinguish between spreadsheet data and agent instructions.
Capability inventory: The skill can execute various system commands via subprocess.run and utilizes library injection, providing high-privilege capabilities that could be abused if an injection is successful.
Sanitization: While defusedxml is employed for XML safety, the skill does not sanitize the string content of the spreadsheet cells before returning them to the agent's context.
[COMMAND_EXECUTION]: The skill frequently invokes external binaries to perform system tasks.
Files: scripts/recalc.py, scripts/office/soffice.py, scripts/office/validators/redlining.py
Evidence: Subprocess calls to gcc for compilation, soffice for formula recalculation, and git for generating document diffs.

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