Check API quota usage and tier status
AI agents call check_balance to retrieve information from NWO Robotics without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query of account metadata (quota usage, tier status). It has no side effects, does not execute commands, does not modify data, and does not involve financial transactions. The read-only nature and informational purpose place it in the Read category with low severity, as misuse would only expose existing account information rather than enable harmful actions.
From the tool's definition Tool name 'check_balance' and description 'Check API quota usage and tier status' indicate a query operation that retrieves account/service status information without modifying any state or executing external operations.
Attacks that exploit this kind of access
Check API quota usage and tier status. It is categorised as a Read tool in the NWO Robotics MCP Server, which means it retrieves data without modifying state.
Register the NWO Robotics MCP server in PolicyLayer and add a rule for check_balance: 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 NWO Robotics. Nothing to install.
check_balance 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 check_balance 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 check_balance. 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.
check_balance is provided by the NWO Robotics MCP server (redciprianpater/mcp-server-robotics). 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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