The Agent Skills Directory

[EXTERNAL_DOWNLOADS]: The skill provides instructions for installing and using official Cloudflare tools and well-known libraries.
References wrangler (Cloudflare's CLI) for service management and deployment.
Suggests the use of postal-mime and mimetext for handling email content and MIME generation.
Points to the official Cloudflare MCP server repository on GitHub for agent-based interactions.
[COMMAND_EXECUTION]: The skill includes numerous examples of command-line operations using wrangler and curl for administrative tasks such as onboarding domains, managing routing rules, and testing email delivery. These are standard development practices for the platform.
[DATA_EXPOSURE]: The skill correctly advises against hardcoding sensitive information, recommending the use of environment variables or Cloudflare secrets for managing API tokens (e.g., CLOUDFLARE_API_TOKEN).
[INDIRECT_PROMPT_INJECTION]: The skill defines a surface area for indirect prompt injection by facilitating the processing of inbound email data by AI agents.
Ingestion points: The email() handler in references/routing.md and the onEmail() method in references/sending.md ingest raw email data from external senders.
Boundary markers: The skill suggests using the isAutoReplyEmail header to filter certain types of automated traffic, though it does not provide specific prompt delimiters for the email body.
Capability inventory: The associated capabilities include sending emails via the send_email binding and persisting data in Durable Object storage.
Sanitization: Examples demonstrate parsing MIME content using postal-mime but do not include explicit sanitization logic for the email body before it is passed to the agent context.

cloudflare-email-service