Get a list of all available functions that can be scheduled.
AI agents call get_available_functions to retrieve information from Simple MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and returns metadata about available functions—a read-only operation with no ability to modify data, execute code, or cause destructive effects. The low severity reflects minimal blast radius even if misused by an AI agent.
From the tool's definition Tool name 'get_available_functions' and description 'Get a list of all available functions that can be scheduled' indicate a query/list operation that retrieves information without modification or side effects.
Attacks that exploit this kind of access
Get a list of all available functions that can be scheduled. It is categorised as a Read tool in the Simple MCP MCP Server, which means it retrieves data without modifying state.
Register the Simple MCP server in PolicyLayer and add a rule for get_available_functions: 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 Simple MCP. Nothing to install.
get_available_functions 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_available_functions 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_available_functions. 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_available_functions is provided by the Simple MCP server (karar-hayder/simple-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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