listFunctions

Return function and procedure list for a schema.

read-onlyany connectionsweeps instancesweeps group

Synopsis

listFunctions(schema)

Description

Return function and procedure list for a schema.

Parameters

schema requiredstring

Also accepts connection, instance, group, described once under arguments every tool takes.

Output

Keyed by function signature; each value is that routine's signature and properties. An absent extension or a missing grant is reported as {error, hint} in place of the map.

Scope

A physical replica is byte-identical here, so asking each member of a replication group adds nothing.

Example mocked data

Request

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "listFunctions",
    "arguments": {
      "schema": "shop"
    }
  }
}

Result

{
  "order_total(bigint)": {
    "description": "Sum of the order's line items.",
    "kind": "function",
    "language": "sql",
    "return_type": "numeric",
    "arguments": "p_order_id bigint",
    "volatility": "stable",
    "security_definer": false,
    "is_strict": true
  }
}

Invented values on a fictional shop database, shaped by and checked against this tool's output schema. Real output is returned as structuredContent to clients that negotiate MCP 2025-06-18 or later.