skills/clawlink-hq/skills/postmark/Gen Agent Trust Hub

postmark

Pass

Audited by Gen Agent Trust Hub on Jun 28, 2026

Risk Level: SAFEEXTERNAL_DOWNLOADSCOMMAND_EXECUTION
Full Analysis
  • [EXTERNAL_DOWNLOADS]: The skill uses npx to download and execute the @useclawlink/cli package from the npm registry. This package is the official command-line interface provided by the vendor for the Postmark integration.
  • [COMMAND_EXECUTION]: The skill interacts with the Postmark API by executing shell commands using the npx @useclawlink/cli tool. These commands facilitate sending emails, checking stats, and managing templates.
  • [CREDENTIALS_UNSAFE]: The skill documentation identifies that authentication credentials for the ClawLink service are stored locally on the user's filesystem at ~/.clawlink/credentials.json following the browser login process.
  • [INDIRECT_PROMPT_INJECTION]: The skill provides the ability to ingest data from external sources, such as bounce messages and delivery statistics, which could potentially contain adversarial content designed to influence the agent's behavior.
  • Ingestion points: Data is retrieved via actions like postmark_get_bounces and postmark_get_delivery_stats defined in SKILL.md.
  • Boundary markers: There are no explicit instructions for the agent to treat retrieved email data as untrusted or to use specific delimiters.
  • Capability inventory: The agent has the ability to send emails (postmark_send_email), modify templates (postmark_edit_template), and create webhooks (postmark_create_webhook).
  • Sanitization: No automated sanitization or verification of the content retrieved from Postmark is mentioned.
Audit Metadata
Risk Level
SAFE
Analyzed
Jun 28, 2026, 02:43 PM
Security Audit — agent-trust-hub — postmark