Check all links on a webpage for broken URLs (404s), redirects (301/302), and timeouts. Returns status, response time, and location for each link.
AI agents call check_links to retrieve information from Deadlink Checker without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves HTTP status information and metadata about links on a webpage. It performs GET or HEAD requests to determine link validity but does not modify any data, execute arbitrary code, delete resources, or trigger financial transactions. The worst-case misuse scenario is reconnaissance or scanning, which has minimal blast radius. Classified as Read with low severity.
From the tool's definition Tool description states it 'Check[s] all links on a webpage' and 'Returns status, response time, and location' — purely informational retrieval with no modification, deletion, or execution of external commands.
Attacks that exploit this kind of access
Check all links on a webpage for broken URLs (404s), redirects (301/302), and timeouts. Returns status, response time, and location for each link. It is categorised as a Read tool in the Deadlink Checker MCP Server, which means it retrieves data without modifying state.
Register the Deadlink Checker MCP server in PolicyLayer and add a rule for check_links: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Deadlink Checker. Nothing to install.
check_links is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the check_links rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for check_links. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
check_links is provided by the Deadlink Checker MCP server (yifanyifan897645/deadlink-checker-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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