This record as markdown: /tools/54rt1n-container-mcp/kb-read.md
What kb_read does on Container-MCP
AI agents call kb_read to retrieve information from Container-MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why kb_read is rated Low
The naming convention and context within a knowledge base API indicate this tool retrieves or queries knowledge base data. No evidence suggests it modifies, deletes, or executes operations with side effects. The empty description prevents higher confidence, but the pattern of companion tools and the 'read' verb are reliable indicators of a Read category tool.
From the tool's definition Tool name 'kb_read' combined with sibling tools 'kb_create_document', 'kb_manage', and 'kb_search' indicates this is part of a knowledge base (kb) system.
Attacks that exploit this kind of access
The rule that runs kb_read safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Container-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For kb_read, this is the rule to start with:
kb_read is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Container-MCP, apply this rule, and every kb_read call is checked against it from then on.
Questions about kb_read
kb_read is a read tool on the Container MCP server. It is categorised as a Read tool in the Container-MCP MCP Server, which means it retrieves data without modifying state.
Register the Container MCP server in PolicyLayer and add a rule for kb_read: 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 Container-MCP. Nothing to install.
kb_read 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 kb_read 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 kb_read. 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.
kb_read is provided by the Container MCP server (54rt1n/container-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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