AI agents call get_music_on_hold to retrieve information from Oitvoip without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves configuration data (music files used for on-hold scenarios) from the VoIP platform. It has no side effects, does not execute code, does not modify system state, and does not involve financial transactions. The classification as Read is appropriate for a data retrieval operation on a VoIP administrative system.
From the tool's definition Tool name 'get_music_on_hold' and description 'Get music on hold files for a domain' indicate a retrieval operation with the verb 'get'. No modification, execution, deletion, or financial action is described.
Attacks that exploit this kind of access
Get music on hold files for a domain. It is categorised as a Read tool in the Oitvoip MCP Server, which means it retrieves data without modifying state.
Register the Oitvoip MCP server in PolicyLayer and add a rule for get_music_on_hold: 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 Oitvoip. Nothing to install.
get_music_on_hold 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 get_music_on_hold 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 get_music_on_hold. 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.
get_music_on_hold is provided by the Oitvoip MCP server (oitapps/oitvoip-mcp-server). 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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