Resolve a flight number to its airports, terminals, scheduled times, and status. Use BEFORE book_ride whenever the customer provides a flight number so that pickup time and terminal are correct. Input is tolerant: accepts 'AF007', 'AF 007', 'AF-007', 'af7', 'AFR007' — the tool normalizes internal...
Part of the Booking server.
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AI agents use resolve_flight to create or modify resources in Booking. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call resolve_flight repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Booking.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"resolve_flight": {
"limits": [
{
"counter": "resolve_flight_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Booking policy for all 8 tools.
These attack patterns abuse exactly the kind of access resolve_flight gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Resolve a flight number to its airports, terminals, scheduled times, and status. Use BEFORE book_ride whenever the customer provides a flight number so that pickup time and terminal are correct. Input is tolerant: accepts 'AF007', 'AF 007', 'AF-007', 'af7', 'AFR007' — the tool normalizes internally. Returns an array of matching operations (usually 1 when direction is set).. It is categorised as a Write tool in the Booking MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Booking MCP server in PolicyLayer and add a rule for resolve_flight: 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 Booking. Nothing to install.
resolve_flight is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the resolve_flight 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 resolve_flight. 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.
resolve_flight is provided by the Booking MCP server (https://mcp-mydriverparis.mydriverparis.workers.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 8 Booking tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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