Get the schema fields for a specific table
AI agents call get_schema_fields to retrieve information from Omics AI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves structural information about a table's schema (column names, types, constraints, etc.) for inspection purposes. It has no side effects, does not modify data, does not execute arbitrary code, and does not delete or create resources.
From the tool's definition Tool name 'get_schema_fields' and description 'Get the schema fields for a specific table' indicate a retrieval operation that examines table metadata without modifying or executing queries against data.
Attacks that exploit this kind of access
Get the schema fields for a specific table. It is categorised as a Read tool in the Omics AI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Omics AI MCP Server MCP server in PolicyLayer and add a rule for get_schema_fields: 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 Omics AI MCP Server. Nothing to install.
get_schema_fields 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_schema_fields 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_schema_fields. 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_schema_fields is provided by the Omics AI MCP Server MCP server (mfiume/omics-ai-mcp). 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.
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