Citeguard

Key features

• Stable line, column, context, and same-sentence proximity associations for every citation.
• Explicit title-similarity mismatch detection for descriptive Markdown links.
• Arbitrary URL checks only when networkMode=full is explicitly enabled.
• SSRF defensesHTTP-only schemes, no URL credentials, canonical IPv4/IPv6 private and special-purpose range rejection, DNS answer validation, per-redirect validation, redirect caps, one end-to-end deadline, prompt cancellation of rejected response bodies, and response-size limits.
• A model-callable citeguard_check tool, standalone CLI, stable JSON receipt, and reusable TypeScript API.