The Agent Skills Directory

[EXTERNAL_DOWNLOADS]: The skill provides instructions to install the resend-pp-cli binary using npx and go install from resources managed by the vendor (mvanhorn).
[COMMAND_EXECUTION]: The skill invokes the resend-pp-cli binary to perform administrative tasks, search emails, and manage API keys.
[DATA_EXFILTRATION]: The CLI tool includes a --deliver webhook:<url> feature that allows the user or agent to send command results (which may include PII or API metadata) to an external URL.
[INDIRECT_PROMPT_INJECTION]:
Ingestion points: The skill retrieves and processes untrusted data from the Resend API, including email bodies, subjects, and contact information.
Boundary markers: None provided; the skill does not instruct the agent to use delimiters or ignore instructions embedded in the retrieved data.
Capability inventory: The skill has the ability to execute shell commands, write to files, and perform network requests via webhooks.
Sanitization: There is no mention of sanitizing or escaping the data fetched from the Resend API before it is interpolated into the agent's context.

pp-resend