List all available collections in the knowledge base
AI agents call list_collections to retrieve information from MCP MAGMA Handbook Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about existing collections without creating, modifying, or deleting data. It is a simple enumeration/query operation with no side effects, matching the Read category definition. The blast radius is minimal—an AI agent listing collections cannot cause harm beyond learning what documentation exists. Severity is low due to the informational nature of the operation.
From the tool's definition The tool 'list_collections' performs a query operation to 'List all available collections in the knowledge base' with no modification, deletion, or execution of code.
Attacks that exploit this kind of access
List all available collections in the knowledge base. It is categorised as a Read tool in the MCP MAGMA Handbook Server MCP Server, which means it retrieves data without modifying state.
Register the MCP MAGMA Handbook Server MCP server in PolicyLayer and add a rule for list_collections: 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 MAGMA Handbook Server. Nothing to install.
list_collections 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_collections 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_collections. 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_collections is provided by the MCP MAGMA Handbook Server MCP server (legenai/mcp-magma-handbook). 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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