Get free disk space in bytes at the specified path.
AI agents call free_space to retrieve information from Transmission without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves filesystem metadata (free disk space) with no side effects, modifications, or external operations. It is a straightforward read operation analogous to checking disk usage, presenting minimal risk even if invoked by an AI agent.
From the tool's definition Tool name 'free_space' and description 'Get free disk space in bytes at the specified path' indicate a query operation that retrieves information without modification.
Attacks that exploit this kind of access
Get free disk space in bytes at the specified path. It is categorised as a Read tool in the Transmission MCP Server, which means it retrieves data without modifying state.
Register the Transmission MCP server in PolicyLayer and add a rule for free_space: 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 Transmission. Nothing to install.
free_space 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 free_space 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 free_space. 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.
free_space is provided by the Transmission MCP server (philogicae/transmission-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.
Teams ship this data inside their own products. See what a licence covers →