Chelaile MCP vs Transita MCP Server

bus_get_my_location

Resolve the caller's approximate location from their public IP — useful when the user asks something like "what's near me" without providing coordinates. **Precision is city-level (typically a few kilometres).** Good enough to identify the city and seed bus_get_nearby_stops with a starting guess. NOT precise enough to find the user's actual bus stop — for that, ask for a landmark/address and resolve it via bus_search. Caveats: - Resolves via ip-api.com (free tier; rate-limited but no auth). - VPN / corporate proxy → result reflects the proxy exit IP, not the user. - Cellular IPs often land on a provincial centroid. Args: - ip (string, optional): a specific IPv4/IPv6 to look up. Omit to use the mcp server process's own outbound IP (= the caller's machine when running locally). - response_format ('markdown' | 'json') Returns (json): { "lat": 31.2222, "lng": 121.4581, "gpsType": "wgs", "city": "上海", "region": "上海市", "country": "中国", "ip": "116.236.0.1", "isp": "China Telecom", "precision": "city-level (~10 km); not suitable for stop-level queries" } **Suggested workflow**: 1. Call this tool to identify the user's city (match 'city' field against bus_list_cities to get a cityId). 2. Pass lat/lng into bus_get_nearby_stops for a rough nearby list, OR ask the user to confirm a landmark and use bus_search.pois for sharper coordinates.

bus_search

Search inside a city by keyword. Returns matching lines, stations, and POIs in one call. Use this as the primary entry point when the user gives a line number, station name, or destination name without IDs. **Keyword tip**: plain "71", "71路", "地铁2号线", "陆家嘴" all work — the upstream is reasonably forgiving. If a short numeric returns empty, try appending "路". **Coordinate systems**: - 'pois' coords are GCJ-02 (use directly with bus_plan_transit) - 'stations' coords are WGS-84 (use with bus_get_nearby_stops / bus_get_line_realtime) Both are also marked with a 'gpsType' field. Args: - city_id (string, required): e.g. '034' - keyword (string, required) - response_format ('markdown' | 'json') Returns (json): { "highlightKey": "71路", "lines": [ { "name": "71", "lineNo": "r95817", "isSubway": false, "directions": [ { "direction": 0, "lineId": "21283603183", "startSn": "延安东路外滩", "endSn": "申昆路枢纽站" }, { "direction": 1, "lineId": "21283603182", "startSn": "申昆路枢纽站", "endSn": "延安东路外滩" } ], // Compat top-level fields mirror directions[0] (or first available). "lineId": "21283603183", "direction": 0, "startSn": "延安东路外滩", "endSn": "申昆路枢纽站" }, ... ], "stations": [{ "sId":"...", "sn":"西藏中路", "lat":31.231006, "lng":121.474316, "gpsType":"wgs", "physicalStId":"...", "namesakeStId":"...", "isSubway":false }, ...], "pois": [{ "name":"71路", "address":"...", "tag":"公交线路", "district":"黄浦区", "lat":31.233021, "lng":121.49073, "gpsType":"gcj" }, ...] } **Line folding**: each entry in 'lines' is one logical line (e.g. "71路"). The two travel directions live in 'directions[]'. Pick the lineId matching your desired direction. **Subway hint**: when 'isSubway' is true, the entry carries a 'hint' field — bus_get_line_detail will return empty for these lineIds. Use bus_get_stop_detail (metros field) or bus_plan_transit instead. **Follow-ups**: - directions[i].lineId → bus_get_line_detail (full stop list, first/last/price) — non-subway only - stations[*].physicalStId + namesakeStId → bus_get_stop_detail (NOTE: a few stations lack physicalStId — typically metro-only entries with subwayV2=1. For those, use bus_get_nearby_stops to resolve the bus platform IDs nearby.) - pois[*].lat/lng (GCJ) → bus_plan_transit as origin/destination

bus_search_more

Paginated 'see more' for one category from bus_search. Args: - city_id (string, required) - keyword (string, required): same keyword used in bus_search - type ('1'|'2'|'3'): 1=more lines, 2=more stations, 3=more POIs (default '1') - response_format ('markdown' | 'json') Returns: same shape as bus_search but only the requested category is populated.

bus_get_nearby_stops

List bus stops near a WGS-84 GPS coordinate, each annotated with the lines that pass through and the realtime buses approaching. **If you don't have coordinates**: call bus_get_my_location first (city-level precision via IP), or ask the user for a landmark and resolve it via bus_search.pois — the resulting lat/lng goes into this tool's lat/lng args. Args: - city_id (string, required): e.g. '034' - lat / lng (string, required): WGS-84 decimal coordinates - limit (number, default 5): how many of the closest stops to return (max 20) - response_format ('markdown' | 'json') Returns (json): { "stops": [ { "sId": "021-15232", "sn": "西藏中路", "distance": 87, "isSubway": false, "physicalStId": "...", "namesakeStId": "...", "firstLineId": "...", "lines": [ { "lineId": "...", "name": "71", "direction": 0, "endSn": "...", "status": "等待发车" | "不在运营时间" | "" (running), "preArrivalTime": "10:10" | undefined, "targetOrder": 2, "targetStationId": "021-15232", "buses": [ { "busId": "...", "order": 2, "arrivalTime": 1779070466055, "travelTime": 25, "distanceToDest": 90, "capacity": 0 } ] } ], "subwayLines": [ { "name": "地铁2号线", "shortName": "2号线", "color": "140,194,32", "directions": [{ "destName": "...", "firstTime": "05:31", "lastTime": "23:24" }] } ] } ] } Field notes: - buses[].arrivalTime is a ms timestamp; -1 = unknown - buses[].travelTime is seconds remaining; -1 = unknown - buses[].capacity: 0=light, 1=moderate, 2=crowded - If no realtime buses but the line is starting soon, 'preArrivalTime' will hold the next predicted dispatch ("10:12")

bus_get_stop_detail

Full detail for a stop: precise WGS-84 coordinates, every line that passes through (with first/last/price), realtime buses, and nearby metro lines. Args: - city_id (string, required) - physical_st_id (string, required): from bus_get_nearby_stops / bus_search - namesake_st_id (string, optional): recommended; from the same source - first_line_id (string, optional): a line to highlight - lat / lng (string, optional): caller's WGS-84 location, used to populate 'distance' - response_format ('markdown' | 'json') Returns (json): { "stations": [ { "sId": "...", "sn": "...", "lat": ..., "lng": ..., "distance": ..., "lines": [{ "lineId": "...", "name": "71", "direction": 0, "startSn": "...", "endSn": "...", "firstTime": "05:30", "lastTime": "23:30", "price": "2元", "targetOrder": 2, "buses": [...] }], "metros": [{ "name": "地铁14号线", "lineNo": "14号线", "color": "97,96,32" }] } ] } Multiple entries in stations[] mean the stop name maps to several physical platforms.

bus_get_line_detail

Full info for a line: rider-facing fields (name, first/last/price, stationsNum), the full ordered station list, the reverse-direction lineId, and every bus currently on the line. **Use this — not bus_get_timetable — to answer "is line X still running" or "first/last bus time" questions.** The timetable tool only has data for a small minority of lines. **Subway lines are NOT supported.** If bus_search returned a line with isSubway=true (e.g. lineId=1057 for 地铁2号线), this endpoint returns an empty payload — the response will carry `empty: true` and a `hint` field pointing at bus_get_nearby_stops / bus_plan_transit. Don't retry; route to those tools instead. Args: - city_id (string, required) - line_id (string, required): from bus_search.lines[*].lineId - lat / lng (string, optional): caller's WGS-84 coordinates - response_format ('markdown' | 'json') Returns (json): { "line": { "lineId":"...", "name":"71", "lineNo":"r95817", "direction":0, "startSn":"...", "endSn":"...", "firstTime":"05:30", "lastTime":"23:30", "price":"2元", "stationsNum":24 }, "stations": [{ "order":1, "sId":"...", "sn":"...", "wgsLat":..., "wgsLng":..., "physicalStId":"...", "namesakeStId":"...", "metros":[{"name":"地铁14号线","lineNo":"14号线","color":"97,96,32"}] }, ...], "buses": [{ "busId":"...", "order":2, "lat":..., "lng":..., "speed":5.7, "capacity":0, "distanceToWaitStn":...}], "reverseDirection": { "lineId":"...", "startSn":"...", "endSn":"...", "firstTime":"04:30", "lastTime":"22:30", "price":"2元" } | null, "depDesc": "...", "preArrivalTime": "...", "targetOrder": 24, "empty": true, "hint": "..." // present only when upstream returned no data (subway / retired line) } Each station carries: - 'order' → feed into bus_get_line_realtime / bus_list_line_buses as target_order - 'sId' → feed into bus_get_line_realtime as station_id (NOT into bus_get_stop_detail!) - 'physicalStId' + 'namesakeStId' → feed into bus_get_stop_detail to see every line through that stop

bus_get_line_route

Polyline coordinates for drawing a line on a map. Points with 'stopOrder' are actual stops; others are shape points between stops. Args: - city_id (string, required) - line_id (string, required) - include_shape (boolean, default false): false returns only stop markers (~25 points); true returns all shape points (~400-500). Skip unless you actually need to draw the line. - response_format ('markdown' | 'json') Returns (json): { "pointCount": 480, // total shape points upstream returned "stopCount": 23, // stop markers among them "points": [{ "lat":..., "lng":..., "stopOrder":1 }, ...] } 'points' is the filtered list — stops only by default, full polyline when include_shape=true. **Known caveat**: upstream sometimes omits the terminus stop from the polyline, so 'stopCount' may be one less than bus_get_line_detail's 'stationsNum' (e.g. 23 vs 24). Trust bus_get_line_detail for the authoritative station list; line_route is just for drawing. Markdown mode only summarises counts; request JSON to read coordinates.

bus_get_line_realtime

Canonical "when will my bus arrive" tool. Returns every bus currently on the line, with the nearest one carrying an ETA to the waiting stop. **Important**: the upstream predicts an ETA for only the nearest bus heading to your stop. Buses farther up the route are returned (with position/speed/capacity) but their `eta` field is null. That's not a bug. **Args**: - city_id (string, required) - line_id (string, required): from bus_search - target_order (string, required): the waiting stop's order on the line. Source: bus_get_line_detail.stations[i].order, or bus_get_nearby_stops.stops[].lines[].targetOrder. - station_id (string, required): sId of the waiting stop - lat / lng (string, required): WGS-84 — the user's location is best; if unavailable, use the waiting stop's wgsLat/wgsLng (from line_detail.stations[i]). - response_format ('markdown' | 'json') Returns (json): { "line": { "lineId":"...", "name":"71", "direction":0, "endSn":"..." }, "targetOrder": 2, "realData": true, "buses": [ { "busId":"...", "licence":"...", "order":2, "lat":..., "lng":..., "speed":5.7, "capacity":0, "distanceToWaitStn":90, "eta":{"travelTime":25,"arrivalTime":1779070466055,"displayTime":"10:14"} }, { "busId":"...", "order":3, "lat":..., "lng":..., "speed":3, "capacity":0, "eta":null }, ... ], "note": "..." } Field notes: - The 'line' sub-object intentionally omits startSn — upstream does not return it on this endpoint. Read it from bus_get_line_detail if needed. - eta.travelTime is seconds remaining - eta.arrivalTime is a ms timestamp - eta.displayTime is a "HH:MM" hint from upstream - capacity: 0=light, 1=moderate, 2=crowded

bus_list_line_buses

Returns the nearest bus heading to the anchor stop, with ETA and the bus's next stop name. **This is narrower than the name suggests.** Despite the upstream endpoint being called "busList", in practice it returns at most 1-2 buses (the imminent ones). For the FULL roster of every bus currently on the line, call **bus_get_line_detail** — its 'buses' array lists all live vehicles with positions. Use this tool when you want a quick "what's about to arrive" answer for a specific stop. Args: - city_id (string, required) - line_id (string, required) - target_order (string, required): the waiting stop's order on the line - station_name (string, required): display name of that anchor stop - response_format ('markdown' | 'json') Returns (json): { "targetOrder": 2, "buses": [ { "busId":"...", "licence":"...", "order":2, "lat":..., "lng":..., "speed":8.2, "capacity":0, "nextStop":"西藏中路", "eta":{"travelTime":214,"arrivalTime":..., "displayTime":"10:14"} } ] }