AI agents call bigquery_get_table_schema to retrieve information from Mimi Seed without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves schema metadata from BigQuery tables—column names, types, and structure. It performs no side effects, creates no data, executes no code, and causes no modifications. This is a straightforward read/query operation with minimal blast radius if misused by an AI agent, as it only exposes table structure information.
From the tool's definition Tool name 'bigquery_get_table_schema' and description 'BigQuery 테이블 스키마(컬럼 정보) 조회' (BigQuery table schema column information retrieval) indicates a query/retrieval operation that returns metadata about table structure without modifying data.
Attacks that exploit this kind of access
BigQuery 테이블 스키마(컬럼 정보) 조회. It is categorised as a Read tool in the Mimi Seed MCP Server, which means it retrieves data without modifying state.
Register the Mimi Seed MCP server in PolicyLayer and add a rule for bigquery_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 Mimi Seed. Nothing to install.
bigquery_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 bigquery_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 bigquery_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.
bigquery_get_table_schema is provided by the Mimi Seed MCP server (@yoonion/mimi-seed-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
bigquery_get_table_schema is one line of Mimi Seed's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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