Get all indexes for a specific table
AI agents call get_table_indexes to retrieve information from PostgreSQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns index metadata about a table structure. It has no side effects—it does not create, modify, delete, or execute operations. It is a straightforward data retrieval operation consistent with the server's read-only design for schema inspection.
From the tool's definition Tool name is 'get_table_indexes' and description states 'Get all indexes for a specific table', which retrieves metadata without modifying data. Server description emphasizes 'read-only access' and schema inspection capabilities.
Attacks that exploit this kind of access
Get all indexes for a specific table. It is categorised as a Read tool in the PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for get_table_indexes: 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 PostgreSQL MCP Server. Nothing to install.
get_table_indexes 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_indexes 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_indexes. 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_indexes is provided by the PostgreSQL MCP Server MCP server (jplwunder/postgres-mcp-server). 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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