🔍 [SAFE] Get detailed information about a specific field/column including its type, description, and metadata. Use this to understand what a column contains. Risk: None - read-only operation.
AI agents call get_field to retrieve information from Metabase MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query/retrieval operation with no side effects. It returns metadata about database fields without modifying, deleting, or executing any operations. The explicit safety designation and read-only nature place it in the Read category with low severity.
From the tool's definition Tool name is 'get_field' and description explicitly states it is a '[SAFE]' read-only operation that retrieves 'detailed information about a specific field/column including its type, description, and metadata.' The description confirms 'Risk: None - read-only…
Attacks that exploit this kind of access
🔍 [SAFE] Get detailed information about a specific field/column including its type, description, and metadata. Use this to understand what a column contains. Risk: None - read-only operation. It is categorised as a Read tool in the Metabase MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Metabase MCP Server MCP server in PolicyLayer and add a rule for get_field: 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 Metabase MCP Server. Nothing to install.
get_field 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_field 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_field. 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_field is provided by the Metabase MCP Server MCP server (mikela92/metabase-mcp-mab). 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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