Call this before get_skill to choose the right skill for the task. Match each row
AI agents call list_skills to retrieve information from Open MCP Knowledgebase without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries available skills to help an agent select the appropriate one, with no side effects, data modification, code execution, or irreversible actions. It is a pure read operation typical of discovery/browsing functionality.
From the tool's definition Tool name is 'list_skills' and description indicates it 'Call this before get_skill to choose the right skill' — a listing/enumeration operation with no modification of state.
Attacks that exploit this kind of access
Call this before get_skill to choose the right skill for the task. Match each row. It is categorised as a Read tool in the Open MCP Knowledgebase MCP Server, which means it retrieves data without modifying state.
Register the Open MCP Knowledgebase 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 Open MCP Knowledgebase. 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 Open MCP Knowledgebase MCP server (no-product/knowledgebase-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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