Inspect a TLS/SSL certificate for a hostname: issuer, subject, validity dates, SAN list, key algorithm, and certificate chain. No authentication required.
AI agents call vs_ssl_check to retrieve information from Visual Sentinel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs passive inspection of publicly available certificate information. It retrieves data without modifying, executing code, deleting resources, or affecting financial systems. The blast radius of misuse is minimal—an agent could only discover certificate details already publicly exposed via standard TLS handshakes. Classified as Read with low severity.
From the tool's definition Tool queries and retrieves SSL/TLS certificate metadata (issuer, subject, validity dates, SAN list, key algorithm, certificate chain) for inspection purposes.
Attacks that exploit this kind of access
Inspect a TLS/SSL certificate for a hostname: issuer, subject, validity dates, SAN list, key algorithm, and certificate chain. No authentication required. It is categorised as a Read tool in the Visual Sentinel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Visual Sentinel MCP Server MCP server in PolicyLayer and add a rule for vs_ssl_check: 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 Visual Sentinel MCP Server. Nothing to install.
vs_ssl_check 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 vs_ssl_check 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 vs_ssl_check. 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.
vs_ssl_check is provided by the Visual Sentinel MCP Server MCP server (visualsentinel/mcp-server). 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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