Get a specific command by ID
AI agents call get_command to retrieve information from Mcp Histfile without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves a single command entry from shell history by ID. It performs a query without modifying, deleting, or executing anything. The action is entirely informational with no capability to alter state or trigger external operations.
From the tool's definition Tool name 'get_command' and description 'Get a specific command by ID' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get a specific command by ID. It is categorised as a Read tool in the Mcp Histfile MCP Server, which means it retrieves data without modifying state.
Register the Mcp Histfile MCP server in PolicyLayer and add a rule for get_command: 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 Mcp Histfile. Nothing to install.
get_command 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_command 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_command. 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_command is provided by the Mcp Histfile MCP server (rajpdus/mcp-histfile). 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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