Get the last N lines from a log file
AI agents call tail_log to retrieve information from Local Logs 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 historical log data without modifying, deleting, or executing anything. It is a passive monitoring function that poses minimal security risk. The only concern would be if sensitive information is logged, but that is a data sensitivity issue rather than a tool capability issue.
From the tool's definition Tool name 'tail_log' and description 'Get the last N lines from a log file' indicate a retrieval operation with no side effects. The server description emphasizes 'monitoring and analysis' and 'real-time tailing', which are read-only activities.
Attacks that exploit this kind of access
Get the last N lines from a log file. It is categorised as a Read tool in the Local Logs MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Local Logs MCP Server MCP server in PolicyLayer and add a rule for tail_log: 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 Local Logs MCP Server. Nothing to install.
tail_log 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 tail_log 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 tail_log. 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.
tail_log is provided by the Local Logs MCP Server MCP server (mariosss/local-logs-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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