Schema | Google Flights Policy Recommender (MCP)

Google Flights Policy Recommender (MCP)

Describes the environment variables required to run the server.

Name	Required	Description
`POLICY_JSON`	No	JSON string of travel policy (overrides default policy.json)
`MCP_BEARER_TOKEN`	No	Bearer token for Basic Auth authentication (optional if using OAuth)
`PREFERENCES_JSON`	No	JSON string of user preferences (overrides default user_preferences.json)

Features and capabilities supported by this server

Capability	Details
`tools`	{ "listChanged": true }

Functions exposed to the LLM to take actions

Name	Description
search_flightsA	Searches Google Flights for a route and returns structured flight options (airline, times, stops, price). Does not check policy or book anything.
check_policyA	Evaluates a specific flight (by id from the last search_flights call) against a policy JSON file and returns compliance, violations, and whether it needs approval.
find_compliant_flightsA	Searches Google Flights and evaluates every result against a policy file, returning only compliant options (plus a summary of how many were rejected and why), sorted by price.
start_bookingA	Re-validates the chosen flight against policy, then drives Google Flights through fare selection to the airline/OTA site and best-effort fills traveler details. ALWAYS stops before any payment field or purchase button — it never enters payment info or completes a purchase. Returns a report of what was filled, what wasn't, and the URL/screenshot where a human needs to take over. If the flight is out of policy, booking is refused unless acknowledgeOutOfPolicy is explicitly set to true.
close_browserA	Closes the Playwright browser opened by this server. Call when done with a booking session.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

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