List all available Certificate Authorities
AI agents call ssl_list_cas to retrieve information from Web Proxy MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays information about available CAs without creating, modifying, deleting, or executing any operations. It is a pure read operation with minimal security impact—CA listings are typically non-sensitive system configuration data. The low severity reflects that unauthorized listing of CAs poses minimal risk compared to other categories.
From the tool's definition Tool name 'ssl_list_cas' and description 'List all available Certificate Authorities' indicate a query/retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all available Certificate Authorities. It is categorised as a Read tool in the Web Proxy MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Web Proxy MCP Server MCP server in PolicyLayer and add a rule for ssl_list_cas: 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 Web Proxy MCP Server. Nothing to install.
ssl_list_cas 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 ssl_list_cas 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 ssl_list_cas. 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.
ssl_list_cas is provided by the Web Proxy MCP Server MCP server (mako10k/mcp-web-proxy). 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.
Teams ship this data inside their own products. See what a licence covers →