Lista todas las funciones en la base de datos (UDFs y PSQL functions)
AI agents call list-functions to retrieve information from Mcp Firebird without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and lists database function definitions without executing them, modifying data, or triggering side effects. It is a straightforward metadata inspection operation comparable to other 'describe-' and 'analyze-' tools on the same server, all of which are read-only operations.
From the tool's definition Tool name 'list-functions' and description 'Lista todas las funciones en la base de datos (UDFs y PSQL functions)' indicate retrieval of metadata about database functions without modification or execution.
Attacks that exploit this kind of access
Lista todas las funciones en la base de datos (UDFs y PSQL functions). It is categorised as a Read tool in the Mcp Firebird MCP Server, which means it retrieves data without modifying state.
Register the Mcp Firebird MCP server in PolicyLayer and add a rule for list-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 Mcp Firebird. Nothing to install.
list-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 list-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 list-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.
list-functions is provided by the Mcp Firebird MCP server (mcp-firebird). 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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