Run a read-only SQL query against Redshift
AI agents call query to retrieve information from Redshift 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 data from Redshift without side effects. The read-only restriction prevents it from being classified as Write, Execute (arbitrary operations), Destructive, or Financial. The blast radius is minimal—the worst case is exfiltration of existing data or resource exhaustion, both limited by typical database access controls.
From the tool's definition Tool name 'query' with description 'Run a read-only SQL query against Redshift'. The explicit 'read-only' constraint in the description confirms no data modification or destructive operations are possible.
Attacks that exploit this kind of access
Run a read-only SQL query against Redshift. It is categorised as a Read tool in the Redshift MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Redshift MCP Server MCP server in PolicyLayer and add a rule for query: 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 Redshift MCP Server. Nothing to install.
query 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 query 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 query. 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.
query is provided by the Redshift MCP Server MCP server (@davidalbertonogueira/redshift-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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