AI agents call list_time_away_allocations to retrieve information from Humaans without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries time-away allocation information with no side effects or data modification capability. It matches the 'Read' category definition: retrieves or queries data with no side effects. Severity is low because the data exposure (time-away/PTO information) is sensitive but not immediately actionable for harm without additional context, and this is a read-only operation on an HR system.
From the tool's definition Tool description states 'List time-away allocations' with optional filtering. The server is explicitly described as 'Read-only MCP server'. No creation, modification, deletion, or execution is performed—only querying and retrieving time-away data.
Attacks that exploit this kind of access
List time-away allocations. Optionally filter by personId. It is categorised as a Read tool in the Humaans MCP Server, which means it retrieves data without modifying state.
Register the Humaans MCP server in PolicyLayer and add a rule for list_time_away_allocations: 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 Humaans. Nothing to install.
list_time_away_allocations 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 list_time_away_allocations 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 list_time_away_allocations. 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.
list_time_away_allocations is provided by the Humaans MCP server (ptorsten/humaans-mcp). 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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