Gets the schema of a given feature
AI agents call describe_feature to retrieve information from 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 returns the schema definition of a feature. It performs a query operation that has no side effects—it does not create, modify, delete, or execute any operations. The action is purely informational, returning structural metadata about a feature. This is consistent with the Read category for tools that retrieve or query data.
From the tool's definition Tool name 'describe_feature' and description 'Gets the schema of a given feature' indicate retrieval/querying of metadata without modification or side effects.
Attacks that exploit this kind of access
Gets the schema of a given feature. It is categorised as a Read tool in the MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Server MCP server in PolicyLayer and add a rule for describe_feature: 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 MCP Server. Nothing to install.
describe_feature 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 describe_feature 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 describe_feature. 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.
describe_feature is provided by the MCP Server MCP server (node-in-layers/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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