List all bars you have access to and get their IDs
AI agents call list_bars to retrieve information from Bar Assistant 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 information about accessible bars and returns their identifiers. It performs a simple query with no side effects—no data is created, modified, deleted, or altered. The operation is informational only, making it a straightforward Read category with low severity since exposure of bar IDs carries minimal risk compared to other operations on this server like removing ingredients or deleting cocktails.
From the tool's definition Tool name 'list_bars' and description 'List all bars you have access to and get their IDs' indicate data retrieval with no modification. The verb 'list' is a classic read operation that queries existing data.
Attacks that exploit this kind of access
List all bars you have access to and get their IDs. It is categorised as a Read tool in the Bar Assistant MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bar Assistant MCP Server MCP server in PolicyLayer and add a rule for list_bars: 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 Bar Assistant MCP Server. Nothing to install.
list_bars 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_bars 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_bars. 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_bars is provided by the Bar Assistant MCP Server MCP server (the-real-py/bar-assistant-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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