Detect provider for URL and check whether track is downloadable per
AI agents call probe_url to retrieve information from Mcp Music Forge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs inspection and validation of URLs to determine their source and downloadability status. It retrieves information without creating, modifying, deleting, or executing operations. The lack of actionable side effects places it firmly in the Read category.
From the tool's definition 'probe_url' detects provider for URL and checks if track is downloadable—a query/detection operation with no side effects, data modification, or external state changes.
Attacks that exploit this kind of access
Detect provider for URL and check whether track is downloadable per. It is categorised as a Read tool in the Mcp Music Forge MCP Server, which means it retrieves data without modifying state.
Register the Mcp Music Forge MCP server in PolicyLayer and add a rule for probe_url: 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 Mcp Music Forge. Nothing to install.
probe_url 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 probe_url 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 probe_url. 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.
probe_url is provided by the Mcp Music Forge MCP server (jojoprison/mcp-music-forge). 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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