# Charlotte Area Transit (CATS) (pypi · queenscoach)

CATS bus and light rail trip planning, live arrivals, timetables, routes, and service alerts

- Trust score: 93/100 (high trust)
- Change this week: +6
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-16

## Components

- remote · `queenscoach.adamwanninger.com`: 36/100, [markdown](https://verifymcp.io/servers/ajwann-queenscoach/queenscoach.md), [page](https://verifymcp.io/servers/ajwann-queenscoach/queenscoach)
- pypi · `queenscoach`: 93/100 (this document), [markdown](https://verifymcp.io/servers/ajwann-queenscoach/queenscoach-2.md), [page](https://verifymcp.io/servers/ajwann-queenscoach/queenscoach-2)

## Channel facts

- Registry: `pypi`
- Package: `queenscoach`
- Version: `2.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-16.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 1 of 34 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to ajwann/queenscoach).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 25 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 80/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1755 tokens (~117/item across 15 items; 7 tools + 8 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 87/100
  - Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 83/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 40% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Charlotte Area Transit (CATS) MCP server?

Charlotte Area Transit (CATS) runs locally as a PyPI package, launched with uvx queenscoach. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add ajwann-queenscoach -- uvx queenscoach
```

### Cursor

```json
{
  "mcpServers": {
    "ajwann-queenscoach": {
      "command": "uvx",
      "args": [
        "queenscoach"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "ajwann-queenscoach": {
      "command": "uvx",
      "args": [
        "queenscoach"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add ajwann-queenscoach -- uvx queenscoach
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ajwann-queenscoach": {
      "type": "local",
      "command": [
        "uvx",
        "queenscoach"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ajwann-queenscoach --command uvx --arg queenscoach
```

### Hermes

```yaml
mcp_servers:
  ajwann-queenscoach:
    command: "uvx"
    args: ["queenscoach"]
```

### Netclaw

```json
{
  "McpServers": {
    "ajwann-queenscoach": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "queenscoach"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add ajwann-queenscoach -t stdio -c uvx -a queenscoach
```

### Other

```json
{
  "mcpServers": {
    "ajwann-queenscoach": {
      "command": "uvx",
      "args": [
        "queenscoach"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-16 (score 93, −1)

- [functional] Stability: pass → 0.87

### 2026-10-15 (score 94, 0)

- [security] Stability: 0.97 → pass
- [functional regression] Security disclosure: unverified → fail

### 2026-10-14 (score 94, +1)

- [functional regression] Security disclosure: fail → unverified

### 2026-10-13 (score 93, +18)

- [security improvement] Malware scan: unverified → pass
- [functional] Stability: fail → 0.93

### 2026-10-12 (score 75, −12)

- [security regression] Malware scan: pass → unverified

### 2026-10-06 (score 87, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 47.

### 2026-10-04 (score 86, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-03 (score 71, −14)

- [security regression] Malware scan: pass → unverified

## MCP tools (7)

### `list_vehicles` (~121 tokens)

Find buses and trains

Current GPS positions of CATS buses and trains in service. Give "vehicle" to locate one bus or train by its number (e.g. "2301"), "route" for every vehicle on a route (e.g. "9", "501", "Blue Line"), "mode" for buses or trains, or nothing for the whole system. Includes heading, speed, occupancy, headsign, and the next stop when available.

Input parameters:

- `limit`: Maximum vehicles to return.
- `mode`
- `route`
- `vehicle`

### `list_stops` (~208 tokens)

Find stops and stations

CATS stops and stations with the bus routes and light rail lines serving each (501 is the LYNX Blue Line, 510 the CityLYNX Gold Line). For "closest station" or "near me" questions, pass the user's current device location as latitude and longitude; results are then nearest first with metersAway. Narrow with "mode" (e.g. train for the nearest rail station), "route", or "query" (part of a name). Same-named platforms close together are returned as one station. The complete raw stop table is the gtfs://static/stops.txt resource.

Input parameters:

- `latitude`
- `limit`: Maximum stations to return (default 10 with a location, 250 without).
- `longitude`
- `mode`: Only stops with bus or train service.
- `query`: Stop id, stop code, or part of a stop name, e.g. "Tryon".
- `route`: Only stops this route serves.

### `get_arrivals` (~169 tokens)

Get arrival times at a stop

Estimated arrival times of buses or trains at one stop or station. Give "stop" (a stop id, stop code, or part of a stop name), or, for "my stop" / "near me" questions, the user's current device location as latitude and longitude to use the nearest station. With a location, "mode" or "route" picks the nearest stop that service actually calls at, so asking for trains finds the nearest rail station rather than a closer bus stop. Reports minutes away, schedule deviation, the vehicle number, and any service alerts.

Input parameters:

- `latitude`
- `limit`: Maximum arrivals to return.
- `longitude`
- `mode`: Only show bus or train arrivals.
- `route`: Only show arrivals for this route.
- `stop`

### `plan_trip` (~257 tokens)

Plan a trip

Plan a trip on CATS buses and trains between two places, with walking at either end and between stops. Give the start as origin_stop or origin_latitude and origin_longitude (use the user's current device location for 'from here'), and the destination the same way (look up a venue's or address's coordinates first). Leave now by default, or give depart_at or arrive_by with an optional date. Returns up to 3 itineraries: each ride's route, where to board and get off, the vehicle's destination, times including live delays when a vehicle is reporting, wait at each transfer, and walking legs. Walking is estimated from straight-line distance.

Input parameters:

- `arrive_by`
- `date`
- `depart_at`
- `destination_latitude`
- `destination_longitude`
- `destination_stop`: Destination stop id, code, or name.
- `max_transfers`: Most vehicle changes allowed (default 2).
- `max_walk_meters`: Longest walk to the first stop or from the last, in meters (default 800).
- `origin_latitude`
- `origin_longitude`
- `origin_stop`: Starting stop id, code, or name.

### `get_schedule` (~183 tokens)

Get the timetable at a stop

The published timetable at one stop or station for a date: scheduled departures with each trip's route and real destination, and the first and last departure that day. Use it for 'when is the last train tonight', 'does this bus run on Sunday', or times later today or on another date; use get_arrivals instead for live predictions in the next hour. Give "stop", or the user's location as latitude and longitude for the nearest stop serving the route or mode. Times default to from now (today) or the start of service (other dates).

Input parameters:

- `after`
- `before`
- `date`
- `latitude`
- `limit`: Maximum departures to list (default 20).
- `longitude`
- `mode`: Only bus or train departures.
- `route`: Only departures on this route.
- `stop`

### `get_route` (~144 tokens)

Describe a route

Everything about one CATS route on a date: for each direction, where it goes, its stops in order, its first and last trips, and how often it runs in the early morning, morning rush, midday, afternoon rush, evening, and late night. Also how many trips run on each of the next seven days, and how many service alerts are active. Use it for 'where does the Blue Line go' or 'how often does the 9 run on Saturday' (pass that Saturday's date).

Input parameters:

- `date`
- `route` (string, required): Route number or name, e.g. "9", "501", "Blue Line", "Airport".

### `get_service_alerts` (~100 tokens)

Get service alerts

Current and upcoming CATS service alerts: detours, closed stops, and suspended service, with what is affected, why, and until when. Give "route" or "stop" to narrow them, the user's location as latitude and longitude for alerts affecting stops within 800 m, or nothing for every alert in the system.

Input parameters:

- `latitude`
- `longitude`
- `route`: Alerts affecting this route.
- `stop`

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/ajwann-queenscoach/queenscoach-2#diagnostics

## Score history

- 2026-10-16: 93
- 2026-10-15: 94
- 2026-10-14: 94
- 2026-10-13: 93
- 2026-10-12: 75
- 2026-10-06: 87
- 2026-10-04: 86
- 2026-10-03: 71
- 2026-10-02: 85
- 2026-10-01: 70
- 2026-09-30: 84
- 2026-09-29: 69
- 2026-09-28: 83
- 2026-09-27: 57
- 2026-09-26: 57
- 2026-09-25: 54
- 2026-09-24: 53
- 2026-09-23: 53
- 2026-09-22: 52
- 2026-09-21: 52
- 2026-09-20: 67
- 2026-09-19: 52
- 2026-09-18: 52
- 2026-09-17: 52
- 2026-09-16: 67
- 2026-09-15: 52
- 2026-09-14: 52
- 2026-09-13: 52
- 2026-09-12: 52

## Common questions

### What is the Charlotte Area Transit (CATS) MCP server?

Charlotte Area Transit (CATS) is an MCP server listed in the public MCP registry as io.github.ajwann/queenscoach. CATS bus and light rail trip planning, live arrivals, timetables, routes, and service alerts. This page covers its PyPI package (queenscoach).

### Is the Charlotte Area Transit (CATS) MCP server safe to use?

Charlotte Area Transit (CATS) scores 93 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 16 October 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Charlotte Area Transit (CATS) MCP server expose?

Charlotte Area Transit (CATS) exposes 7 tools: list_vehicles, list_stops, get_arrivals, plan_trip, get_schedule, and 2 more. Their descriptions and schemas cost roughly 1,182 tokens of context every time the server is loaded.

### Is the Charlotte Area Transit (CATS) MCP server still maintained?

Charlotte Area Transit (CATS) is still listed as active in the MCP registry. We last reached this channel on 16 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Charlotte Area Transit (CATS) MCP server under?

Charlotte Area Transit (CATS) declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/queenscoach/
- Socket report: https://socket.dev/pypi/package/queenscoach
- Repository: https://github.com/ajwann/queenscoach
- Changelog RSS feed: https://verifymcp.io/servers/ajwann-queenscoach/queenscoach-2.xml
- Changelog JSON feed: https://verifymcp.io/servers/ajwann-queenscoach/queenscoach-2.json
- HTML version of this page: https://verifymcp.io/servers/ajwann-queenscoach/queenscoach-2