Get all fields and values from hash.
AI agents call hash_get_all to retrieve information from Amazon MQ 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 hash data structure without side effects. It queries existing state and returns values without altering the underlying data. This is a classic Read operation with minimal blast radius even if misused by an agent, as it cannot modify broker configuration, delete resources, or trigger external actions.
From the tool's definition Tool name 'hash_get_all' and description 'Get all fields and values from hash' indicate retrieval of data with no modification. The verb 'Get' and absence of any mutation language (create, update, delete, modify) confirm read-only semantics.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Get all fields and values from hash. It is categorised as a Read tool in the Amazon MQ MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon MQ MCP Server MCP server in PolicyLayer and add a rule for hash_get_all: 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 Amazon MQ MCP Server. Nothing to install.
hash_get_all 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 hash_get_all 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 hash_get_all. 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.
hash_get_all is provided by the Amazon MQ MCP Server MCP server (awslabs.amazon-mq-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.