The Agent Skills Directory

Extensive Data Access: To build a writing voice profile, the skill analyzes a sample of 100–150 sent emails. This involves the systematic processing of personal or professional communications to extract linguistic patterns, which is a standard requirement for the skill's stated goal.
Dynamic Capability Generation: The skill uses the m_create_skill tool to programmatically generate new agent skills. This allows the AI to define new operational rules and behaviors based on its analysis, effectively extending the agent's feature set dynamically.
Indirect Prompt Injection Surface: The skill processes external text from emails, which serves as an ingestion point for untrusted data that could theoretically contain hidden instructions.
Ingestion points: The skill retrieves 100–150 emails from the Microsoft 365 Sent folder via the m365_list_emails tool (SKILL.md).
Boundary markers: The instructions explicitly direct the agent to "extract patterns, not content" and to use "synthetic examples" in the final output to maintain a boundary between the source data and the generated profile.
Capability inventory: The skill utilizes m365_list_emails for data retrieval and m_create_skill for generating new agent functionality (SKILL.md).
Sanitization: The skill includes instructions to skip auto-generated mail and mandates that verbatim sentences or confidential details must never be copied into the generated profile.

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