"A server for finding the cheapest flights for a specified date range" matching MCP tools:

• search_oneway_flights

  Google Flights Search (Real-Time Fares)

  Search real-time one-way flights on Google Flights. Input: origin and destination IATA codes (destination may be a list) plus either one departure date or a date range. Returns each flight's price, airline, duration, stops, a bookable buy_link, and Google's historical price range (price_insights_low / price_insights_high) so you can say whether a fare is actually a good deal. Use it for any one-way fare question, including open-ended ones. For a flexible search make ONE call with a date range and/or several destinations -- do NOT call it once per date. 'Cheapest flight to Sri Lanka anywhere in October' is one call, not thirty. Requires the caller's own RapidAPI key. Each date/destination combination is one billed request; the count and the plan's remaining quota come back in `api_usage`.

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• search_oneway_flights

  Free Flight and Hotel Search (no API key)

  Search real-time one-way flights from Google Flights. IMPORTANT: for any flexible search, make ONE call with a date range and/or several destinations. Do NOT call this repeatedly, once per date -- pass departure_date_from and departure_date_to and the server searches the range for you. 'Cheapest flight to Sri Lanka anywhere in October' is one call, not thirty. FREE TIER LIMIT: one call searches at most 15 date x destination combinations. A wider request is not rejected -- it is sampled evenly across the range and comes back with truncated: true and the exact list of dates searched in search_coverage.departure_dates_searched. Check that list before assuming a date has no flights: a missing date was never searched, which is not the same as having no results. Returns each flight with price, duration, airline, stops, a bookable buy_link, and Google's historical price range (price_insights_low / price_insights_high) so you can say whether a fare is a good deal.

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• search_flight_prices_by_date

  World Monitor

  Search Google Flights date-grid pricing across a date range.

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• travel_flights_cheapest

  GoCreative Agent API

  Cheapest Flights API — only the N cheapest flights for a route/date, sorted lowest price first — for fare-alert and budg Cost: $0.005–$0.05 USDC on Base per call.

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• search_flights

  gondola

  Search for flights by route and date and return cash-priced options. Results are ranked for the traveler by the search backend — weighing their airline loyalty/status and travel history alongside flight quality — and returned 10 per page. To see more options, call again with ``page=2``, ``page=3``, and so on. Args: origin: Origin airport code or city (e.g. "LAX", "SFO", "New York"). destination: Destination airport code or city (e.g. "NRT", "LHR", "Paris"). departure_date: Departure date in YYYY-MM-DD format (e.g. "2025-03-15"). return_date: Optional return date in YYYY-MM-DD format for a round trip. In browse mode, round trips are searched as two one-way legs. num_passengers: Number of passengers. Defaults to 1. cabin_class: Optional cabin class preference. One of: "economy", "premium economy", "business", "first". mode: Leave as "browse" (default). "book" is a restricted alpha — only use it if the user explicitly asks to book a flight. page: 1-based results page, 10 options per page. Increment to see more options. airlines: Optional airline codes or names for browse mode (e.g. ["UA"] or ["United"]). Passed to the Google Flights search API. max_stops: Optional maximum stops per direction in browse mode. Use 0 for nonstop only, 1 for nonstop or one-stop itineraries. Returns: A ranked, paged list of flight options — airlines, routes, prices, and a link. Cash prices only. This tool does not currently return award (points/miles) pricing for flights, so do not state or imply a flight's points cost from these results. If the user asks how many miles a flight costs, say that award pricing is not available here right now and point them at the airline's own award search. Hotel award pricing is unaffected: the hotel tools still return points rates and cents-per-point.

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• list_packages

  Sparkling Tracks Tours

  List Sparkling Tracks tour packages with optional filters. Returns a compact summary (id, title, route, starting per-person price in EUR for the land-only option, the with-flights total when available (price_eur_with_flights), whether flights are optional (flights_optional), an approximate price in the requested currency, duration, badges, URL). The default starting price is land-only (without flights); customers can add round-trip flights. Optional date_from/date_to (ISO YYYY-MM-DD) filter by the real departure calendar: combined with a destination city they keep only packages whose stay in that city overlaps the range (annotated with city_date_windows); dates alone keep only packages that fit entirely inside the range. Accepts optional language and currency params; city names, country names, and trip titles are translated when a supported locale is requested. Tour packages are quote-based: prices are starting per-person prices, final pricing depends on party size, dates, and customisations. Every response carries price_basis, which states the exactness of every price field it returns (these are "from" prices, never per-date quotes) and the booking path. A package on a coach route that is also sold in other editions carries an editions count; get_package_details returns those editions in its family block. Use get_package_details for the full itinerary.

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• describe_coverage

  insidergraph

  Orientation: what this server covers RIGHT NOW - per-feed live date ranges (coverage deepens daily toward the backfill horizon), your access tier, and an example question per tool. Call this first when unsure what to ask or whether a date range is covered.

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• search_flights

  whentofly

  Find the cheapest round-trip across a FLEXIBLE multi-month date window with a min/max trip length — e.g. "10–15 days, anytime Sep–Nov". Search a broad date window rather than requiring the traveler to choose exact dates first. First call the search_locations MCP tool for city or airport names, then pass each returned airport:AAA or city:AAA value unchanged as origin/destination (explicit legacy IATA codes remain supported). Add an earliest/latest date window and min/max trip duration; get back a ranked list of the cheapest fares (with booking links) plus a price verdict — an honest read of whether the cheapest fare is low, typical, or high versus the route's usual price, or unknown when we lack a usable typical-price band (a price-level read, not a buy-now-or-wait timing prediction). Non-economy requests may return action-bound Google Flights seller quotes or separate route-price evidence in metadata.route_price_check. For a specific route, set checked_bags=1 when the traveler needs one checked bag, then inspect each result's price_basis; anywhere discovery does not support baggage pricing. Checked-bag searches still run seller enrichment but set the fare-only verdict and metadata.route_price_check to null; verify=full does not override that boundary. Use it for any flight question where the dates are flexible or the user wants the cheapest time to fly. If metadata.refresh_hint is present, you may repeat the same call after the suggested delay to inspect a separate same-route/date/cabin price check. If you can wait longer for that best-effort cross-check, set verify=full. It uses a longer ~35s budget, but never treats a different airline, itinerary, gate, or booking URL as verification of the displayed offer. Provider failure, unavailability, or a spend cap can still return only cached indicators; always inspect metadata.seller_enrichment_status (`applied` means complete date-pair coverage put Serp-derived seller data in results; `complete` means the selected plan and action resolution completed without such data entering results; `partial` means date-pair or direct-action coverage has gaps though valid seller data may still rank; `skipped` is reserved for response surfaces where enrichment does not apply) and metadata.seller_enrichment_coverage. That object reports the theoretical query-valid date pairs and how many were targeted/searched; it is not exhaustive provider inventory. Default requests target at most three pairs, while explicit verify=full targets at most seven with bounded longer budgets. Inspect metadata.freshness, and metadata.route_price_check.

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• search_etfs

  Bullrun

  Look up ETFs by name, ticker or ISIN, with classification, listing, index, distribution-policy, AUM, expense-ratio and yield filters. Best for finding a known fund. For ranking questions ("cheapest", "largest", "best performing", "most liquid") prefer screen_etfs, which evaluates the whole universe: here minAum and minYieldTtmPct are applied only to a bounded profile-enriched candidate scan, so do not describe the result as exhaustive when candidateCapReached is true. Use get_etf_snapshot for one listing, get_etf_fund to resolve an ISIN across venues, and get_etf_holdings for constituents. Read-only.

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• get_battery_optimal

  nempulse

  Actual vs LP-optimal dispatch revenue, per-DUID summary, over a date range (energy-only, perfect-foresight benchmark). NOT a revenue-total source — use get_battery_revenue for that. Both the 'actual' AND the 'optimal' figures here are MLF-adjusted (get_battery_revenue's is gross) — the LP's objective is solved on MLF-adjusted prices, not just settled at them afterward — and both cover solved LP days only (days where the solver failed are dropped from both), so the two tools' totals will not match even for the same DUID and date range. The requested date_to may also be silently truncated to the latest date with sufficient fleet-wide LP coverage. Pass duid to restrict to one battery — omitting it scans every DUID and can time out even on a ~3-week range; even a single-DUID, single-month scan has been observed to time out, so keep date ranges short and retry narrower on a timeout.

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• search_tee_times

  Pin Seeker

  Search golf tee times, hot deals, and cheapest rounds by city, ZIP, or course name. Use for tee times, booking a round, weekend golf, twilight, or comparing courses nearby. No GolfNow FacilityId needed. Returns GolfNow URLs; does not book, hold, or charge. Ask for a city/ZIP/course and date if missing.

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• treasury_get_debt

  treasury-fiscaldata-mcp-server

  Fetch national debt (Debt to the Penny) — total public debt outstanding broken into publicly-held debt and intragovernmental holdings. Three modes: "latest" returns the most recent business day's record; "date" returns the record for a specific date (must be a business day — the API only records debt on days markets are open); "series" returns a date range, staging the full result as a DataCanvas table when canvas_id is set or the range matches more than 500 rows — read the table's column schema with treasury_dataframe_describe, then run SQL over it with treasury_dataframe_query. Records go back to 1993-04-01.

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• mediora__longitudinal_trend

  mediora-mcp

  Return the per-marker trajectory analyser output for the authenticated patient — HbA1c rising, eGFR falling, ferritin depleting, etc. Each finding includes the marker slug, kind, severity (Info / Notice / Important), trend per year, sample count, date range and a supportive headline + detail. Proxies https://api.mediora.ai/api/trajectory/warnings with the user's token forwarded as Authorization: Bearer.

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• tag_bookmarks_by_filter

  LinkedMash

  Add a label to ALL bookmarks matching a filter in ONE server-side call. Use this — NOT list_bookmarks/search_bookmarks followed by add_labels — whenever the user asks to tag/label many posts by date range, author, tag, media type, or unread status (e.g. 'tag all posts older than March 2026 as Archive', 'label everything from John Doe as Hiring'). Date targeting: 'older than'/'before' DATE -> posted_to (or bookmarked_to); 'since'/'after' DATE -> posted_from (or bookmarked_from); use posted_* for when the post was published and bookmarked_* for when the user saved it; dates are ISO (YYYY-MM-DD). Provide label_name (created if it doesn't exist) or label_id. The tool returns matched/tagged/failed counts: ALWAYS tell the user how many posts were tagged; if 'truncated' is true, tell them it stopped at the cap and to narrow the date range to tag the rest; if 'failed' > 0, mention it. Never paginate or loop add_labels for bulk tagging — this one call handles the whole set.

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• get_audiobook_rankings

  audioknihy.cz Catalog

  Catalog-wide audiobook rankings — cheapest, best-rated (databazeknih.cz, attributed), biggest price drops, or currently at price floor. Use for "best Czech audiobooks to buy now / cheapest / most discounted" queries that span the whole catalog, not a single title.

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• get_audiobook_rankings

  audioknihy.cz Catalog

  Catalog-wide audiobook rankings — cheapest, best-rated (databazeknih.cz, attributed), biggest price drops, or currently at price floor. Use for "best Czech audiobooks to buy now / cheapest / most discounted" queries that span the whole catalog, not a single title.

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• nbu_currency_rate

  Nbu Ua

  Official NBU rate for a SINGLE currency on one day. Pass `valcode` as an ISO-4217 code (e.g. USD, EUR, GBP). `rate` is UAH per 1 unit of that currency. Omit `date` for today. For a time series of one currency across a date range, use `nbu_currency_history` instead.

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• departi_search_transport

  Departi – Travel Compliance & Curated Booking

  Searches flights between two places and returns a ranked list of options, each with: carrier, price (in requested currency), cabin class, total duration, number of stops, departure & arrival times, and a booking deep-link. Flights are sourced across providers (Duffel + Travelpayouts) for broad full-service and low-cost coverage. Use for "how do I get from A to B by air". For where to stay use departi_search_accommodation; for things to do use departi_search_experiences. Prices are indicative — book via the returned link. Returns an empty list if no route is found. Ground/rail/bus is not offered through this tool.

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• astro_get_moon_phase

  NOAA Tides and Currents

  Get the moon phase for a date (or each day of a date range if end_date is given): phase name (New Moon, Waxing Crescent, ...), illuminated fraction, age in days within the 29.53-day cycle, distance (km), apparent diameter (degrees), and waxing/waning. Tide context: spring tides (largest range) occur just after new and full moons; neap tides after quarter moons. Computed locally — no NOAA data involved.

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• list_performances

  events-search

  Lists every performance of a single title, ordered by date, optionally narrowed to one city and a date range. Use this when the user asks for all dates of a title, or for its dates in a given city or on a given weekend - search_events returns only the nearest performance per title. Each performance carries its own venue, date, price, free places and buy_url. Only future performances are returned unless date_from says otherwise.

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