AI agents call get_table_schema to retrieve information from IcebergMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves schema information from an Iceberg table—a read-only, informational operation with no side effects. It aligns with the 'Read' category as it queries data structure metadata.
From the tool's definition Tool name 'get_table_schema' and description 'Provides the schema for a given Iceberg table' indicate a retrieval operation that queries table metadata without modification or execution.
Documented attack patterns abuse exactly the kind of access get_table_schema gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and IcebergMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_table_schema:
{
"version": "1",
"default": "deny",
"tools": {
"get_table_schema": {}
}
}get_table_schema is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Provides the schema for a given Iceberg table. It is categorised as a Read tool in the IcebergMCP MCP Server, which means it retrieves data without modifying state.
Register the Iceberg MCP server in PolicyLayer and add a rule for get_table_schema: 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 IcebergMCP. Nothing to install.
get_table_schema 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_table_schema 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_table_schema. 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_table_schema is provided by the Iceberg MCP server (ryft-io/iceberg-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 IcebergMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
5 IcebergMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.