Estimate the total cost of a trip to any destination worldwide. Returns a detailed breakdown of flight, accommodation, food, activities, and transport costs. Supports budget/mid-range/luxury tiers and multiple currencies. Works with 30 detailed destinations and 80+ cities via cost index.
Risk signalsAccepts file system path (destination)
Part of the Pulse server.
Free to start. No card required.
AI agents call estimate_trip_cost to retrieve information from Pulse 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 estimate_trip_cost 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": {
"estimate_trip_cost": {}
}
}See the full Pulse policy for all 29 tools.
These attack patterns abuse exactly the kind of access estimate_trip_cost 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.
Estimate the total cost of a trip to any destination worldwide. Returns a detailed breakdown of flight, accommodation, food, activities, and transport costs. Supports budget/mid-range/luxury tiers and multiple currencies. Works with 30 detailed destinations and 80+ cities via cost index.. It is categorised as a Read tool in the Pulse MCP Server, which means it retrieves data without modifying state.
Register the Pulse MCP server in PolicyLayer and add a rule for estimate_trip_cost: 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 Pulse. Nothing to install.
estimate_trip_cost 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 estimate_trip_cost 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 estimate_trip_cost. 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.
estimate_trip_cost is provided by the Pulse MCP server (onetrip/pulse). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 29 Pulse tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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