Get current left/right balance
AI agents call getBalance to retrieve information from Lyngdorf 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 the current balance setting between left and right audio channels from a Lyngdorf device. It performs no modifications, deletions, or external operations—purely a data query. Even if misused by an agent, reading balance information poses no security or operational risk.
From the tool's definition Tool name 'getBalance' and description 'Get current left/right balance' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get current left/right balance. It is categorised as a Read tool in the Lyngdorf MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Lyngdorf MCP Server MCP server in PolicyLayer and add a rule for getBalance: 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 Lyngdorf MCP Server. Nothing to install.
getBalance 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 getBalance 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 getBalance. 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.
getBalance is provided by the Lyngdorf MCP Server MCP server (thejens/lyngdorf-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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