Get all fields and values of a hash stored at key.
AI agents call redis_hgetall 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 a Redis hash without modifying, deleting, or executing any operations. It has read-only semantics and minimal blast radius if misused—an agent could retrieve sensitive data but cannot alter or destroy it. The low severity reflects that the primary risk is information disclosure rather than system compromise.
From the tool's definition Tool description explicitly states 'Get all fields and values' which is a retrieval operation with no modification. The name 'hgetall' is a standard Redis command that fetches hash data without side effects.
Attacks that exploit this kind of access
Get all fields and values of a hash stored at key. 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 redis_hgetall: 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.
redis_hgetall 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 redis_hgetall 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 redis_hgetall. 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.
redis_hgetall is provided by the Redshift MCP Server MCP server (santosh07401/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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