List installed skills and their activation state.
AI agents call list_skills to retrieve information from Friday MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns data about installed skills without modifying, executing, or deleting anything. It is a straightforward read/list operation that retrieves system state information. The low severity reflects minimal blast radius if misused by an AI agent.
From the tool's definition Tool description states 'List installed skills and their activation state' - a pure information retrieval operation with no side effects.
Attacks that exploit this kind of access
List installed skills and their activation state. It is categorised as a Read tool in the Friday MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Friday MCP Server MCP server in PolicyLayer and add a rule for list_skills: 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 Friday MCP Server. Nothing to install.
list_skills 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 list_skills 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 list_skills. 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.
list_skills is provided by the Friday MCP Server MCP server (jeremylakeyjr/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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