Calculates the recommended departure time for a transfer in Quito, including real traffic buffers, airport wait times, and Quito-specific time modifiers (altitude, terminal distance). Uses Google Routes API v2 with real-time traffic data.
Risk signalsAccepts file system path (destination)
Part of the Whaber Oracle server.
Free to start. No card required.
AI agents call whaber_calculate_ops_window to retrieve information from Whaber Oracle without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though whaber_calculate_ops_window only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"whaber_calculate_ops_window": {}
}
}See the full Whaber Oracle policy for all 10 tools.
These attack patterns abuse exactly the kind of access whaber_calculate_ops_window gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Calculates the recommended departure time for a transfer in Quito, including real traffic buffers, airport wait times, and Quito-specific time modifiers (altitude, terminal distance). Uses Google Routes API v2 with real-time traffic data.. It is categorised as a Read tool in the Whaber Oracle MCP Server, which means it retrieves data without modifying state.
Register the Whaber Oracle MCP server in PolicyLayer and add a rule for whaber_calculate_ops_window: 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 Whaber Oracle. Nothing to install.
whaber_calculate_ops_window 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 whaber_calculate_ops_window 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 whaber_calculate_ops_window. 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.
whaber_calculate_ops_window is provided by the Whaber Oracle MCP server (https://oracle.whaber.ai/mcp/v1). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 10 Whaber Oracle tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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