Safe File Reader

This reads files from a documents directory and validates them before passing content to your agent. It's from Cisco's AI Defense skill scanner repo, which has 2.1K stars and includes other security focused tools. The validation layer is the main point here. You'd reach for this when you need Claude to read user uploaded files or workspace documents but want some guardrails to prevent path traversal or reading sensitive system files. Worth noting it failed two of three security audits shown on the marketplace, which is ironic given the security angle, so you'll want to check what those findings were about before shipping it in production.